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• Recommendations for managing dedicated server DNS

  - by KP Overflow

  I've rented a dedicated server for several years with a number of domains. I've got a coding background so am comfortable with that side of the tech, but I hate that I still don't truly understand DNS settings. Example: My provider (hostgator) just told me that my parent nameservers are not correctly configured as there is no A record for my primary nameserver. What book/link/tutorial should I read to go from kind of understanding that comment to really understanding it & knowing exactly what I need to do to fix it rather than trial & error which is what I usually do. Thanks BTW I'm using a WHM/cpanel linux setup at hostgator but am eager to learn the fundamentals.

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• Windows Virtual PC File Copy from host very slow

  - by Shiv Kumar

  I have a Windows 7 desktop on which I've installed Windows Virtual PC and an instance Windows 7. I also have virtual XP instance on the same host. The problem I am having is that copying files from the host to the virtual machine is dog slow. I'm talking 17KB/sec. The host machine has a gigbit NIC. While using the XP virtual instance to do the same I didn't notice a huge difference but on the Window 7 virtual instance the time is really slowing me down. Is there something I need to do (settings) to fix this? I've attached an image of the Resource monitor (of the virtual Windows 7 instance) that shows my network traffic going in bursts rather than relatively steady. The files are on a "public" folder on my host machine.

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• Anti Aliasing dead

  - by Gazoza

  I have a problem with anti-aliasing. No matter the software settings, it seems to be gone. I tried driver updating and reinstalling, cleaning of the hardware, different monitor with different cablies, OS reinstalling and changing, none of which helped. I decided to change the graphic card, but that didn't work either. Moreover, I have a distinct impression that the jagged edges are worsening as time goes by. I think this is a hardware-related issue, but I don't know exactly what to do. If anyone here had similar troubles, and/or has an idea how to cope with them, I'd be very grateful. My current card is a nVidia GT610.

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• Where are ghostscript options / switches documented?

  - by sdaau

  I know there is a Ghostscript option, for instance -dPDFSETTINGS=/screen - where is that documented? How can I see what other options it accepts, appart from screen? Also, -dMaxSubsetPct=100 - what does it do? I open man gs, search for PDFSET, I get "Pattern not found". I type in a search engine, I get a myriad of personal webpages, no documentation hits. Can anyone help with a link? Many thanks in advance, Cheers! EDIT: also see this related post: Querying Ghostscript for the default options/settings of an output device (such as 'pdfwrite' or 'tiffg4') - Stack Overflow ... for getting a list of supported options for a given device.

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• Windows 7 - problems launching default application

  - by Chris W

  Just built up a new W7 PC. I've noticed some strange issues with launching default applications. I've got Visual Studio & SQL Server Management Studio set run as administrator when launched. If i double click a .sql file SSMS opens ok but the file itself does not get loaded. If I do the same with a .sln then I get nothing at all from Visual Studio. For the latter I presume the UAC prompt is hidden somewhere waiting for me to say it's ok to launch the app but i've no idea what's happening with SSMS. Is this a W7 bug or are there some settings somewhere that I can tweak to improve this behaviour?

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• Nginx & Apache Cannot get try_files to work with permalinks

  - by tcherokee

  I have been working on this for the past two weeks not and for some reason I cannot seem to get nginx's try_files to work with my wordpress permalinks. I am hoping someone will be able to tell me where I am going wrong and also hopefully tell me if I made any major errors with my configurations as well (I am an nginx newbie... but learning :) ). Here are my Configuration files nginx.conf user www-data; worker_processes 4; pid /var/run/nginx.pid; events { worker_connections 768; # multi_accept on; } http { ## # Basic Settings ## sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; # server_tokens off; # server_names_hash_bucket_size 64; # server_name_in_redirect off; include /etc/nginx/mime.types; default_type application/octet-stream; ## # Logging Settings ## # Defines the cache log format, cache log location # and the main access log location. log_format cache '***$time_local ' '$upstream_cache_status ' 'Cache-Control: $upstream_http_cache_control ' 'Expires: $upstream_http_expires ' '$host ' '"$request" ($status) ' '"$http_user_agent" ' ; access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; } mydomain.com.conf server { listen 123.456.78.901:80; # IP goes here. server_name www.mydomain.com mydomain.com; #root /var/www/mydomain.com/prod; index index.php; ## mydomain.com -> www.mydomain.com (301 - Permanent) if ($host !~* ^(www|dev)) { rewrite ^/(.*)$ $scheme://www.$host/$1 permanent; } # Add trailing slash to */wp-admin requests. rewrite /wp-admin$ $scheme://$host$uri/ permanent; # All media (including uploaded) is under wp-content/ so # instead of caching the response from apache, we're just # going to use nginx to serve directly from there. location ~* ^/(wp-content|wp-includes)/(.*)\.(jpg|png|gif|jpeg|css|js|m$ root /var/www/mydomain.com/prod; } # Don't cache these pages. location ~* ^/(wp-admin|wp-login.php) { proxy_pass http://backend; } location / { if ($http_cookie ~* "wordpress_logged_in_[^=]*=([^%]+)%7C") { set $do_not_cache 1; } proxy_cache_key "$scheme://$host$request_uri $do_not_cache"; proxy_cache main; proxy_pass http://backend; proxy_cache_valid 30m; # 200, 301 and 302 will be cached. # Fallback to stale cache on certain errors. # 503 is deliberately missing, if we're down for maintenance # we want the page to display. #try_files $uri $uri/ /index.php?q=$uri$args; #try_files $uri =404; proxy_cache_use_stale error timeout invalid_header http_500 http_502 http_504 http_404; } # Cache purge URL - works in tandem with WP plugin. # location ~ /purge(/.*) { # proxy_cache_purge main "$scheme://$host$1"; # } # No access to .htaccess files. location ~ /\.ht { deny all; } } # End server gzip.conf # Gzip Configuration. gzip on; gzip_disable msie6; gzip_static on; gzip_comp_level 4; gzip_proxied any; gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript; proxy.conf # Set proxy headers for the passthrough proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_max_temp_file_size 0; client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 90; proxy_buffer_size 4k; proxy_buffers 4 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; add_header X-Cache-Status $upstream_cache_status; backend.conf upstream backend { # Defines backends. # Extracting here makes it easier to load balance # in the future. Needs to be specific IP as Plesk # doesn't have Apache listening on localhost. ip_hash; server 127.0.0.1:8001; # IP goes here. } cache.conf # Proxy cache and temp configuration. proxy_cache_path /var/www/nginx_cache levels=1:2 keys_zone=main:10m max_size=1g inactive=30m; proxy_temp_path /var/www/nginx_temp; proxy_cache_key "$scheme://$host$request_uri"; proxy_redirect off; # Cache different return codes for different lengths of time # We cached normal pages for 10 minutes proxy_cache_valid 200 302 10m; proxy_cache_valid 404 1m; The two commented out try_files in location \ of the mydomain config files are the ones I tried. This error I found in the error log can be found below. ...rewrite or internal redirection cycle while internally redirecting to "/index.php" Thanks in advance

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• Unable to Boot from USB External Hard Drive

  - by Josh Stodola

  I recently upgraded my main development machine to Windows 7. This involved wiping out my primary boot drive (Windows XP 64-bit) and starting clean. Before I wiped it, I did a direct disk-to-disk copy to a big external hard drive I have. While I have been able to migrate most of the necessary files without any problems, I was wanting to boot from it today to check a few settings. I plugged in the hard drive, rebooted, changed the BIOS to boot from USB-HDD first. But, no mattter what I do, it always boots from my primary drive to Windows 7. I do not see any kind of error message or anything. How can I boot to Windows XP 64-bit on this external hard drive?

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• Blender Render Cycles

  - by usersuper

  I get a very poor Render in cycles. Not just minor problems, but just a cloud of of black and white dots and no contour at all. I read a lot about this now and couldn't get it to work. Does anybody know how to get the settings right. Or better what do I have to pay attention to get better renders. I also tried external renderer like Lux, which increased my CPU usage to 98 % (just the default cube and clicking on Lux and load materials). Is this normal and what could i do to improve that. I have various versions of Blender (2.61,2.62,2.63) on Mac OS X. Thanks for the time.

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• Domino 8.5.3: Modify Subject of Incoming Email

  - by Void

  I am a newbie in managing and development for Domino. Recently, I have request from other teams at work to set up a filter or agent for incoming mail. This is the requirement for the request: Look for Incoming Mail addressed to #CRITICAL (mutlipurpose, internal group containing a list of engineers) For mail matching Point 1, append "For Immediate Action: " to the front of the Subject Some restrictions I have: Only the Domino server is under my charge, not to touch on network-side or other servers No 3rd party software to be installed I have gone through the configurations in the Domino server and the closest thing I have to filtering Email is the Router/SMTP Restrictions... Rules. But this is not able to fulfill Point 2 in any way. Is this even possible using just Domino server settings, or through agents?

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• Shell Script, iterating over a folder

  - by Martin

  I have very basic shell scripting knowledge. I have photos under original folder on many different folder like this folder + folder1 + original + folder2 + original + folder3 + original + folder4 + original Using mogrify I'm trying to create thumbs under a thumb folder following a structure to this. folder + folder1 + original + thumb + folder2 + original + thumb + folder3 + original + thumb + folder4 + original + thumb I'm a little lost in how to write the shell script that may iterate through it. I'm ok giving mogrify its settings but I don't complete understand how to tell the script to go iterate each folder to run the mogrify command.

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• Windows 8 Unable to perform hibernate

  - by Jones

  Windows 8 Enterprise edition x86. Already enabled hibernate option, to have it on shutdown menu (start menu?) and set to hibernate on lid closing. However it's not hibernating for me. When I'm trying to sleep, it's sleep fine and wake up like a kid. But when I'm demanding hibernate, it disconnects internet, turn off screen and be back to lock screen in one second. Steps I've tried. Complete shutdown Clear hiberfile.sys by disabling and enabling back Resetting my power settings. Causes I suspect: Had dual boot with BackTrack with Windows 8 GUI boot manager. It was fine until I reinstall BackTrack, bootmgr resetted and I'm in Ubuntu boot menu;. Using additional hard disk through USB cable.(But it's not a problem before few days, however) How to make my system to hibernate and wakeup again.

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• How can I copy files from a DVD skipping corrupt files?

  - by ujjain

  I have so far tried the following software solutions without success. Windows Explorer Copy (default) TeraCopy Roadkil's Unstoppable Copier Unstoppable Copier stops copying as a whole, it keeps continuing the same file after 20 minutes, despite any settings. I have spent much time Googling, but the one program ("Unstoppable Copier") that people recommended, did not to the trick as it keeps choking on the same file despite a setting of "Fasteset Data Recovery", "Maximum Retries 0" and "Undamaged Files First". The back side of the DVD has some scratches. What options do I have? I have access to both Ubuntu and Windows 7.

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• Microsoft IME + Japanese: Force Hiragana input by default?

  - by Mica

  I am using Windows XP SP3 and Windows 7. On both machines, I cannot make Hiragana the default input method. Is there a way to do this? In the IME tool bar, there is the option to set the "Input Mode." This is always defaulted to "Direct Input." I would like to default to Hirgana or Katakana. I have found the setting dialog for this, by right clicking on the IME toolbar - settings - Japanese IME Standard - Properties - Default Input Mode. This setting seems to have no effect, no matter the combination of selections in the dialogs. Is there a way to reliably set the default Input Mode?

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• iTunes Sync erasing Exchange calendar / contacts

  - by Garrett

  We have had a handful of instances where corporate iPhone users will be syncing Calendar/Contacts/etc in their iTunes settings, and we would like to prevent this. Unfortunately, when they sync their empty home Outlook calendars it then overwrites everything in their iPhone calendar. This has the unpleasant side effect up "updating" Exchange and wiping out every meeting they have. Luckily, our backups have bailed us out in each case - there seems to be no recovering from it any other way as the data is gone. We prefer to allow our users to continue loading media on their phones, which we believe requires iTunes. Is there a way, through Exchange ActiveSync or iOS mobile management, to prevent this from happening?

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• Setting up dual wireless routers

  - by JasCav

  I have two wireless routers (one is the router supplied by Verizon - MI424-WR ActionTek and the other is DD-WRT Buffalo router). I want to set them up so that I have the second router (Buffalo) on its own subnet and two SSIDs so I can put different devices on different routers and so I can put my web server on the first router and put most of my other computers behind the second router for a little extra protection in case of a compromise. From my understanding, I have to hook the two routers together so that the LAN from the Verizon router plugs into the WAN port of the Buffalo router. This is where I get stuck. What settings do I need to look for to setup the Buffalo on its own subnet? Do I need to do anything with the Verizon router, or are the configuration changes done to the Buffalo?

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• Finding day of week in batch file? (Windows Server 2008)

  - by Daniel Magliola

  I have a process I run from a batch file, and i only want to run it on a certain day of the week. Is it possible to get the day of week? All the example I found, somehow rely on "date /t" to return "Friday, 12/11/2009", however, in my machine, "date /t" returns "12/11/2009". No weekday there. I've already checked the "regional settings" for my machine, and the long date format does include the weekday. The short date format doesn't, but i'd really rather not change that, since it'll affect a bunch of stuff I do. Any ideas here? Thanks! Daniel

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• Changing Word mail merge data source locations in bulk?

  - by Daft Viking

  I've just moved a number of Word mail merge files, and a number of Excel spreadsheets that are the data sources for the mail merges, from a Windows XP computer to a Windows 7 computer, and now all the paths for the merge sources are incorrect (used to be c:\documents and settings\user\my documents.... now c:\users\documents....). While I can correct the path of the data source in each file individually, I was hoping that there would be some way of updating the files in bulk, as there are a relatively large number of them. Word 2007 is what is being used, but the documents are all in the previous DOC format (not DOCX).

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• Moving a Drupal between linux servers, best practice to avoid file-ownership problems

  - by zero

  I want to port over a Drupal commons 6x24 from a local LAMP-stack to a production webserver. Both systems run OpenSuse Linux. How do I do this, what are the most important steps. How should I handle file-ownership. It's important for me to have to have full control of the file ownership. If I use the wwwrun account, I frequently run into problems, due to a very strict webserver-admin. See for example the long history of looking for fixes and solutions see this thread and even more interesting see this very long and impressive thread here. All troubles I run into have to do with file-owernship and permissions. This is my current setup; Note: This was just a quick hacked installation - quick and dirty. Well my interest is after the general options i have in the port of a drupal from linux to linux linux-vi17:/srv/www/htdocs/com624 # ls -l insgesamt 224 -rwxrwxrwx 1 root www 45285 19. Jan 00:54 CHANGELOG.txt -rwxrwxrwx 1 root www 925 19. Jan 00:54 COPYRIGHT.txt -rwxrwxrwx 1 root www 206 19. Jan 00:54 cron.php drwxrwxrwx 2 root www 4096 19. Jan 00:54 includes -rwxrwxrwx 1 root www 923 19. Jan 00:54 index.php -rwxrwxrwx 1 root www 1244 19. Jan 00:54 INSTALL.mysql.txt -rwxrwxrwx 1 root www 1011 19. Jan 00:54 INSTALL.pgsql.txt -rwxrwxrwx 1 root www 47073 19. Jan 00:54 install.php -rwxrwxrwx 1 root www 15572 19. Jan 00:54 INSTALL.txt -rwxrwxrwx 1 root www 14940 19. Jan 00:54 LICENSE.txt -rwxrwxrwx 1 root www 1858 19. Jan 00:54 MAINTAINERS.txt drwxrwxrwx 3 root www 4096 19. Jan 00:54 misc drwxrwxrwx 35 root www 4096 19. Jan 00:54 modules drwxrwxrwx 4 root www 4096 19. Jan 00:54 profiles -rwxrwxrwx 1 root www 1470 19. Jan 00:54 robots.txt drwxrwxrwx 2 root www 4096 19. Jan 00:54 scripts drwxrwxrwx 4 root www 4096 19. Jan 00:54 sites drwxrwxrwx 7 root www 4096 19. Jan 00:54 themes -rwxrwxrwx 1 root www 26250 19. Jan 00:54 update.php -rwxrwxrwx 1 root www 4864 19. Jan 00:54 UPGRADE.txt -rwxrwxrwx 1 root www 294 19. Jan 00:54 xmlrpc.php linux-vi17:/srv/www/htdocs/com624 # thx to BetaRides answer here a quick overview on the drush functionality with rsync http://drush.ws/ core-rsync Rsync the Drupal tree to/from another server using ssh. Examples: drush rsync @dev @stage Rsync Drupal root from dev to stage (one of which must be local). drush rsync ./ @stage:%files/img Rsync all files in the current directory to the 'img' directory in the file storage folder on stage. Arguments: source May be rsync path or site alias. See rsync documentation and example.aliases.drushrc.php. destination May be rsync path or site alias. See rsync documentation and example.aliases.drushrc.php. Options: --mode The unary flags to pass to rsync; --mode=rultz implies rsync -rultz. Default is -az. --RSYNC-FLAG Most rsync flags passed to drush sync will be passed on to rsync. See rsync documentation. --exclude-conf Excludes settings.php from being rsynced. Default. --include-conf Allow settings.php to be rsynced --exclude-files Exclude the files directory. --exclude-sites Exclude all directories in "sites/" except for "sites/all". --exclude-other-sites Exclude all directories in "sites/" except for "sites/all" and the site directory for the site being synced. Note: if the site directory is different between the source and destination, use --exclude-sites followed by "drush rsync @from:%site @to:%site" --exclude-paths List of paths to exclude, seperated by : (Unix-based systems) or ; (Windows). --include-paths List of paths to include, seperated by : (Unix-based systems) or ; (Windows). Topics: docs-aliases Site aliases overview with examples Aliases: rsync

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• Single Exchange 2007 server - two AD domains

  - by TheCleaner

  CURRENT: single domain, single Exchange 2007 NEW: two domains, single Exchange 2007 Can this be done? Details: Current setup is a single W2k3 domain with a single Exchange 2007 server. We are merging with another company that currently hosts their email with their ISP via POP3. We'd like to start hosting their email on our Exchange server using their existing domain SMTP addresses. They don't have an AD domain at all at the moment. Recommendations? Can I do this with a trust between the 2 domains? Requirements: They can't have multiple SMTP addresses on both domains...such as I've seen with articles pointing to "hosting multiple domains". I want companyA to have the same account settings they've always had...companyB to have the same SMTP address they've had and not an additional one on the current companyA Exchange domain. They should be able to collaborate (calendar, contacts, GALs) but should still be distinguishable based on which company they "work for". Please help...thanks!

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• How to route traffic through a specific SOCKS proxy on a per-app basis?

  - by GJ.

  I'm running a certain desktop app (actually via AIR if it makes any difference) which doesn't have any built-in proxy configuration settings. I need to get all traffic just from this app directed through a secure SOCKS proxy. This implies I can't use the global network preferences, as these would affect many other apps. Is there any way to force all network communication through a given SOCKS proxy on a per-app basis? It would also be helpful to know if there's a way to perform such routing globally, based on specific IP addresses (as this could allow for some reasonable workaround).

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• Exchange ActiveSync does not work for one user

  - by jshin47

  One particular user in our system is unable to connect to Exchange ActiveSync via her iPhone. When I try to connect using my own credentials on her iPhone it works (everything begins syncing), but when I input her credentials, the Settings app verifies the credentials are correct but nothing syncs. For example, if I open Mail, no items are shown. When I attempt to force a sync, it says "Cannot connect to server." In Exchange 2010 Management Console the user is no different than the others. Exchange ActiveSync is set as "Enable" in Mailbox Features. EDIT: Alternatively, if there is some easy way to create a new useraccount/mailbox and copy all of the contents of the old one over, I bet it would work, and that would be fine as well. She is a Mac user so we do not have to worry about her Active Directory account.

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• RabbitMQ message broker unable to open unused port 61613

  - by mjn

  On a Windows Vista system, RabbitMQ fails to open port 61613 which is not used (as netstat and TCPView show). The server log indicates that it is possible to bind port 5672, but the next lines show the problem with port 61613. I have cleared all firewall settings and rebooted. Several times in the past this helped to solve the problem. But as the problem frequently reappears, I would like to know if there is somthing I am missing to solve its root cause. =INFO REPORT==== 29-Jun-2013::12:09:16 === started TCP Listener on [::]:5672 =INFO REPORT==== 29-Jun-2013::12:09:16 === started TCP Listener on 0.0.0.0:5672 =INFO REPORT==== 29-Jun-2013::12:09:16 === rabbit_stomp: default user 'guest' enabled =INFO REPORT==== 29-Jun-2013::12:09:16 === started STOMP TCP Listener on [::]:61613 =ERROR REPORT==== 29-Jun-2013::12:09:16 === failed to start STOMP TCP Listener on 0.0.0.0:61613 - eacces (permission denied) =INFO REPORT==== 29-Jun-2013::12:09:16 === stopped STOMP TCP Listener on [::]:61613

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• Connecting to a VirtualBox machine from the host, using an ip address

  - by Doron

  Hello, In a macbook host, I run VirtualBox having a guest ubuntu server, with a NAT network setting. In the virtual machine application "Parallels", I would get on the host an IP address of the guest, to which I could later set hostnames and access it directly. However, I couldn't find a way to accomplish this using VirtualBox. The only solution VirtualBox has for me, is to set port forwarding, and access "localhost" with these ports. How can I have the desired behavior set up, without having to change to a bridged network settings, and expose my guest computer to the network my host computer is connected to ? Thanks.

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• Improving TCP performance over a gigabit network lots of connections and high traffic for storage and streaming services

  - by Linux Guy

  I have two servers, Both servers hardware Specification are Processor : Dual Processor RAM : over 128 G.B Hard disk : SSD Hard disk Outging Traffic bandwidth : 3 Gbps network cards speed : 10 Gbps Server A : for Encoding videos Server B : for storage videos andstream videos over web interface like youtube The inbound bandwidth between two servers is 10Gbps , the outbound bandwidth internet bandwidth is 500Mpbs Both servers using public ip addresses in public and private network Both servers transfer and connection on nginx port , and the server B used for streaming media , like youtube stream videos Both servers in same network , when i do ping from Server A to Server B i got high time latency above 1.0ms , the time range time=52.7 ms to time=215.7 ms - This is the output of iftop utility 353Mb 707Mb 1.04Gb 1.38Gb 1.73Gb mqqqqqqqqqqqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqqqqqqqqqqq server.example.com => ip.address 6.36Mb 4.31Mb 1.66Mb <= 158Kb 94.8Kb 35.1Kb server.example.com => ip.address 1.23Mb 4.28Mb 1.12Mb <= 17.1Kb 83.5Kb 21.9Kb server.example.com => ip.address 395Kb 3.89Mb 1.07Mb <= 6.09Kb 109Kb 28.6Kb server.example.com => ip.address 4.55Mb 3.83Mb 1.04Mb <= 55.6Kb 45.4Kb 13.0Kb server.example.com => ip.address 649Kb 3.38Mb 1.47Mb <= 9.00Kb 38.7Kb 16.7Kb server.example.com => ip.address 5.00Mb 3.32Mb 1.80Mb <= 65.7Kb 55.1Kb 29.4Kb server.example.com => ip.address 387Kb 3.13Mb 1.06Mb <= 18.4Kb 39.9Kb 15.0Kb server.example.com => ip.address 3.27Mb 3.11Mb 1.01Mb <= 81.2Kb 64.5Kb 20.9Kb server.example.com => ip.address 1.75Mb 3.08Mb 2.72Mb <= 16.6Kb 35.6Kb 32.5Kb server.example.com => ip.address 1.75Mb 2.90Mb 2.79Mb <= 22.4Kb 32.6Kb 35.6Kb server.example.com => ip.address 3.03Mb 2.78Mb 1.82Mb <= 26.6Kb 27.4Kb 20.2Kb server.example.com => ip.address 2.26Mb 2.66Mb 1.36Mb <= 51.7Kb 49.1Kb 24.4Kb server.example.com => ip.address 586Kb 2.50Mb 1.03Mb <= 4.17Kb 26.1Kb 10.7Kb server.example.com => ip.address 2.42Mb 2.49Mb 2.44Mb <= 31.6Kb 29.7Kb 29.9Kb server.example.com => ip.address 2.41Mb 2.46Mb 2.41Mb <= 26.4Kb 24.5Kb 23.8Kb server.example.com => ip.address 2.37Mb 2.39Mb 2.40Mb <= 28.9Kb 27.0Kb 28.5Kb server.example.com => ip.address 525Kb 2.20Mb 1.05Mb <= 7.03Kb 26.0Kb 12.8Kb qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq TX: cum: 102GB peak: 1.65Gb rates: 1.46Gb 1.44Gb 1.48Gb RX: 1.31GB 24.3Mb 19.5Mb 18.9Mb 20.0Mb TOTAL: 103GB 1.67Gb 1.48Gb 1.46Gb 1.50Gb I check the transfer speed using iperf utility From Server A to Server B # iperf -c 0.0.0.2 -p 8777 ------------------------------------------------------------ Client connecting to 0.0.0.2, TCP port 8777 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 3] local 0.0.0.1 port 38895 connected with 0.0.0.2 port 8777 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.8 sec 528 KBytes 399 Kbits/sec My Current Connections in Server B # netstat -an|grep ":8777"|awk '/tcp/ {print $6}'|sort -nr| uniq -c 2072 TIME_WAIT 28 SYN_RECV 1 LISTEN 189 LAST_ACK 139 FIN_WAIT2 373 FIN_WAIT1 3381 ESTABLISHED 34 CLOSING Server A Network Card Information Settings for eth0: Supported ports: [ TP ] Supported link modes: 100baseT/Full 1000baseT/Full 10000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 10000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: external Auto-negotiation: on MDI-X: Unknown Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: yes Server B Network Card Information Settings for eth2: Supported ports: [ FIBRE ] Supported link modes: 10000baseT/Full Supported pause frame use: No Supports auto-negotiation: No Advertised link modes: 10000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: No Speed: 10000Mb/s Duplex: Full Port: Direct Attach Copper PHYAD: 0 Transceiver: external Auto-negotiation: off Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: yes ifconfig server A eth0 Link encap:Ethernet HWaddr 00:25:90:ED:9E:AA inet addr:0.0.0.1 Bcast:0.0.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1202795665 errors:0 dropped:64334 overruns:0 frame:0 TX packets:2313161968 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:893413096188 (832.0 GiB) TX bytes:3360949570454 (3.0 TiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:2207544 errors:0 dropped:0 overruns:0 frame:0 TX packets:2207544 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:247769175 (236.2 MiB) TX bytes:247769175 (236.2 MiB) ifconfig Server B eth2 Link encap:Ethernet HWaddr 00:25:90:82:C4:FE inet addr:0.0.0.2 Bcast:0.0.0.2 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:39973046980 errors:0 dropped:1828387600 overruns:0 frame:0 TX packets:69618752480 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3013976063688 (2.7 TiB) TX bytes:102250230803933 (92.9 TiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:1049495 errors:0 dropped:0 overruns:0 frame:0 TX packets:1049495 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:129012422 (123.0 MiB) TX bytes:129012422 (123.0 MiB) Netstat -i on Server B # netstat -i Kernel Interface table Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg eth2 9000 0 42098629968 0 2131223717 0 73698797854 0 0 0 BMRU lo 65536 0 1077908 0 0 0 1077908 0 0 0 LRU I Turn up send/receive buffers on the network card to 2048 and problem still persist I increase the MTU for server A and problem still persist and i increase the MTU for server B for better connectivity and transfer speed but it couldn't transfer at all The problem is : as you can see from iperf utility, the transfer speed from server A to server B slow when i restart network service in server B the transfer in server A at full speed, after 2 minutes , it's getting slow How could i troubleshoot slow speed issue and fix it in server B ? Notice : if there any other commands i should execute in servers for more information, so it might help resolve the problem , let me know in comments

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• Sync iPhone applications in iTunes

  - by Uwe Honekamp

  Suppose I have one the one hand one iTunes library on a PC used to sync Outlook contacts and calendar plus on the other hand one iTunes library on a Mac that syncs music, podcasts, apps, ringtones, etc. Both libraries are based on iTunes 9.0.2. It turns out that the iTunes library on the PC always tries to sync apps and ringtones as well. Unfortunately, this boils down to deleting apps and ringtones from the iPhone because the apps are not part of the iTunes library on the PC. After unchecking the checkbox to sync apps and ringtones and plugging the iPhone into the Mac the checkbox is also unchecked on the Mac. It seems as if the settings for syncing apps and ringtones are stored on the iPhone rather than in the particular iTunes library. Whenever syncing apps and ringtones is active on one machine it is also active on the other and vice versa. How can I make the PC ignore apps and ringtones and only sync contacts and calendar?

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