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  • What alternative is there to Nginx that supports http keep-alive between backends ?

    - by felace
    Hi. I recently asked a question about how to keep a backend connection persistent using Nginx, but found out it wasn't possible anyway, It is an HTTP/1.0 proxy without the ability for keep-alive requests yet. (As a result, backend connections are created and destroyed on every request.) It works all fine right now (since the connection between client and Nginx is kept alive and the result is simply the same), but I don't want to establish a new connection every single time a new request is received ,even if it's on a unix domain socket. So, what software (preferably open-source and not too tedious to configure) do you recommend to accomplish that such connections ?

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  • How many nginx/fastcgi processes do you use?

    - by qliq
    I have a drupal-based website on a VPS with 1GB RAM and 1Ghz processor share. The webserver is nginx along with php-fastcgi. Currently I am using 10 nginx and 13 php-fastcgi processes. The server load is high most of the times while half of the RAM is unused. The CPU usage rarely reaches 80%. I have tried some other combinations of nginx/php-fastcgi but am not sure what is the optimal combination because I am quite ignorant about what's going on below the surface. So I appreciate if you could share your experience or give me some clues.

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  • What is the best CPU I could get for my old setup?

    - by cmbrnt
    On my current not-so-good desktop computer, I'm currently running an Intel Core 2 Duo E6550-CPU, and I'm thinking of buying a newer one now that these must be cheap on E-bay and the like. Being a software guy, I'd be grateful for any help in identifying what CPUs that would fit my motherboard so I don't buy a processor which won't work with my computer. It might not be worth it however, since the SATA2-drive is currently what's bottlenecking my system, but I'm still curious about what could be done except for buying an SSD-drive. I'm providing screenshots of CPU-Z running, to help with the identification. My CPU- and motherboard info: http://i.imgur.com/YdO8x.png

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  • Does the size of the monitor Matter?

    - by Arsheep
    I have a old computer, and I want to buy a big LCD. The best I've found so far is Viewsonic's 24" LCD TFT monitor. So will it run without any problems, or do I need to upgrade the video cards or something as well? The computer is not too old: it has P4 board and celeron processor, with 128 graphics memory. And in display properties, it says that the maxium that I can use is 1280 x 1024 resolution. I am noob hardware-wise, so need help on this stuff. Thanks

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  • Does the size of the monitor Matter?

    - by Arsheep
    I have a old computer, and I want to buy a big LCD. The best I've found so far is Viewsonic's 24" LCD TFT monitor. So will it run without any problems, or do I need to upgrade the video cards or something as well? The computer is not too old: it has P4 board and celeron processor, with 128 graphics memory. And in display properties, it says that the maxium that I can use is 1280 x 1024 resolution. I am noob hardware-wise, so need help on this stuff. Thanks

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  • Does the size of the monitor Matter?

    - by Arsheep
    I have a old computer, and I want to buy a big LCD. The best I've found so far is Viewsonic's 24" LCD TFT monitor. So will it run without any problems, or do I need to upgrade the video cards or something as well? The computer is not too old: it has P4 board and celeron processor, with 128 graphics memory. And in display properties, it says that the maxium that I can use is 1280 x 1024 resolution. I am noob hardware-wise, so need help on this stuff. Thanks

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  • KVM vs Hyper-V. Which hypervisor is best for windows guests?

    - by user198851
    I am currently testing openstack for windows guests (XP and 7). I have deployed openstack "all in one" on system with following specs Processor corei5. (4 physical cores and 8 Threads with HT Technology) RAM 8 GB. HD 500 GB. I have created 4 windows xp guests with 512MB RAM and 1VCPU. On each windows guest i have installed visual studio 2008 only. In nova.conf CPU Over-Commit ratio is 2 for better performance (as mentioned in openstack operation guide). Using KVM as hyerpvisor. I have observed poor performance when simultaneously using visual studio in four windows instances. How i can improve performance ? Should i use KVM or Hyper-V ? or any other suggestion ?

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  • redirecting HTTPS requests to http in lighttpd

    - by chochim
    I have a lighttpd server running which has an SSL certificate installed. I would, due to certain reasons, like to forward all https: //www. requests to http: //www. My lighttpd code looks like as follows: $SERVER["socket"] == ":443" { ssl.engine = "enable" ssl.pemfile = "/path/to/pem/file" ssl.ca-file = "/path/to/ca/file" HTTP["host"] =~ "^www\.(.*)$" { url.redirect = ("^/(.*)" => "http://www.%1$1") } } Can you please point out the problem here. Another thing, what is the difference between %1 and $1 ?

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  • No Cure for a Slow Computer?

    - by Marv
    I have a laptop with the following specs: 2.2gHz dual-core processor. 4gb of DDR2 Ram. 180gb HDD space. I have tried everything. I have reinstalled the OS. Installed Ubuntu with Lubuntu, LXDE, Gnome Classic, Unity 2D desktop. I have even tried downgrading to XP with all non-critical processes and services turned off. Even with the most stripped down version of Ubuntu it heats up and the fan starts churning. I'm out of ideas. I have tried everything. If you have any tips, please help. :'(

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  • How many xml http requests is too much for a pc to handle?

    - by Uri
    I'm running mediawiki on an apache on a regular pc running vista (don't know the specific specs, but I'm guessing at least duo core 2 2 giga hertz processor, broadband connection (500 kb/s at least, probably 1 mega). I want to use the MediaWiki api to send a lot of requests to this server. Most of the time the requests will be sent through LAN (but sometimes through the internet). I'm talking thousands of requests every few seconds at worst case. (A lot of these requests may repeat themselves, I guess some sort of cache would help) Will the server handle this, or do I need a stronger/dedicated computer? (I'm not looking for specific yes/no, but just want to get an idea as to what configuration of computer will support how many request per second) Thanks

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  • In a virtual machine monitor such as VMware’s ESXi Server, how are shadow page tables implemented?

    - by ali01
    My understanding is that VMMs such as VMware's ESXi Server maintain shadow page tables to map virtual page addresses of guest operating systems directly to machine (hardware) addresses. I've been told that shadow page tables are then used directly by the processor's paging hardware to allow memory access in the VM to execute without translation overhead. I would like to understand a bit more about how the shadow page table mechanism works in a VMM. Is my high level understanding above correct? What kind of data structures are used in the implementation of shadow page tables? What is the flow of control from the guest operating system all the way to the hardware? How are memory access translations made for a guest operating system before its shadow page table is populated? How is page sharing supported? Short of straight up reading the source code of an open source VMM, what resources can I look into to learn more about hardware virtualization?

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  • How to get the finer resolution for asus eee pc 1000hd after installing windows7?

    - by vij
    Hi i have installed windows 7 on my 2 year old ASUS EEE PC 1000HD. The default Operating system it came with was windows xp. Now the system is working fine but there are some display problems which i am going to state now: Firstly, during booting windows 7 logo is missing. There are no options for resolution changes. The only option possible is 800x600. The boot time is quite long when compared to xp. The graphics driver used in this system is STANDARD VGA GRAPHICS ADAPTER. The processor is intel celeron with 1GB RAM. I think with these requirements it is possible to get windows 7 with finer resolution. But why these problems are occurring?I even tried to install graphics driver provided by intel for this system. But i ve got the error message "this system doesn't meet the necessary requirements". So how to overcome this problem??

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  • How can i simulate the production servers in my home for linux VMs [closed]

    - by user31
    I am thinking of making the small simulation of how the big companies run their system in my home environment to get the feeling. I have the server with 8GB ram , quad core processor. I am thinking of following setup if thats [possible because i have not worked with biger companies , so i want to know how can i do that I am thinking of creating 5 virtual machines VM1 will be database server and will have all databases like MySQL , postgreSQL , sqlite , mongodb and Oracle VM2 will be the web server and will have Apache and Tomcat installed VM3 will be the Filse server where i will have all the web sites file VM4 , i am thinking of as main box where i can install ptyon php java j2ee sites but not sure VM5 will have the server 22008 for c# .net applications my main idea is to be able to host the sites in php, python , java j2ee with spring Is my setup ok or i am missing few things. Please guide me with correct setup so that i can learn stuff

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  • Can I rent exclusive time on a powerful server running linux? [closed]

    - by Mark Borgerding
    My company is involved in a proposal that requires speed estimates of our software on a server with the latest & greatest processors. This is not the first time we've been in this situation. The servers themselves are too expensive to buy a new one every time, so we end up extrapolating from what we have. There are so many variables: processor generation & speed, memory speed, memory channels, cache configurations; it makes extrapolation difficult and error-prone. Is there a business that rents time on the newest servers? At least part of the time we'd need exclusive access to an otherwise quiescent system either via ssh shell access or unattended batch jobs. I am not looking for general cloud computing services. I don't need much time on the server, but it needs to be exclusive. And the server needs to be pretty cutting edge for a solid basis of estimate.

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  • Which OS should I boot into for virtualization?

    - by acidzombie24
    This might be a silly question. I use windows 7 99% of the time. I run linux 10% of the time and XP 5% of the time. I am thinking about getting a Intel® Core™ i7-2600 Processor which has hardware support for virtualization. I dont think i want more than one partition. May have a swap partition. Which OS should I make my primary (and only) partition? I suspect windows7 if i am always using it as going through a linux layer would slow it down. Does it matter much which OS i use if i have hardware support for virtualization? At the moment I am using VMWare player. I suspect software doesnt effect performance?

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  • Windows 7 very slow after restart, but fine after complete shutdown?

    - by lkm
    I have a Dell pc running Windows 7 with the Intel i3 processor. Whenever I restart the computer, the os crawls. For example, I move the mouse and then I see it move on the screen 10 seconds later... Everything runs slowly. This happens only on a restart (it's fine when I turn it on after it has been shut down). Any ideas what is causing this (I haven't installed any new software since buying it). Does it sound like a hardware or software issue?

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  • my.ini optimization on Windows 2008 R2 VPS

    - by MKphpDev
    I have a vmware VPS running Windows Server 2008 R2 Enterprise that has performance issues with MySQL. Every few minutes, MySQL stall for few seconds then responed to queries. I'm sure that my.ini need to be optimized, but unfortunately, I don't have any idea of my.ini configuration. What's running on the server: 2 small wordpress blogs, 1 vbulletin forums (approx. 1.2 GB database, and increasing), small database for some sort of plug-ins (no more than 4000 records) Server Info: Processor: Intel Xeon X5550 @ 2.67GHz, RAM: 6 GB (memory useage never exceeded 2 GB), MySQL 5.5, PHP 5.3.10, IIS 7 current my.ini: [mysqld] default-storage-engine=INNODB sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE _USER,NO_ENGINE_SUBSTITUTION" max_connections=250 myisam_max_sort_file_size=20G innodb_additional_mem_pool_size=256M innodb_flush_log_at_trx_commit=1 innodb_log_buffer_size=8M innodb_buffer_pool_size=512MB innodb_log_file_size=128M innodb_thread_concurrency=10 key_buffer_size = 512M myisam_sort_buffer_size = 8M join_buffer_size = 256K read_buffer_size = 256K sort_buffer_size = 256K table_cache = 4000 thread_cache_size = 200 wait_timeout = 30 connect_timeout = 10 tmp_table_size = 32M max_allowed_packet = 1M max_connect_errors = 10000 query_cache_size = 16M query_cache_limit = 2M query_cache_type = 1 query_cache_min_res_unit = 1024 query_prealloc_size = 16384 query_alloc_block_size = 16384 skip-external-locking read_rnd_buffer_size=1M max_heap_table_size=16M thread_concurrency=8 [mysqld_safe] open_files_limit = 8192 [mysqldump] quick max_allowed_packet = 16M [myisamchk] key_buffer_size = 128M sort_buffer_size = 128M read_buffer = 2M write_buffer = 2M any help with that, please?

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  • ssh on Window Vista and Ubuntu 12.04

    - by Adebayo
    Greeting to all. On my Fijitsu system with intel processor, I could not ssh from my Window Vista partition using PUTTY and also could not ssh from my Ubuntu 12.04 partition. I am try to ssh into a remote machine where I have an account but I always get Connection refused. But from the desktop computer in my office using the same PUTTY I could ssh to remote machine. I have tried to follow several comments but none has worked for me. Please, I need help.

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  • My CPU hits 100°C... Help me!

    - by JamesT
    The safe limit for processors is typically 50°C or so, but I have found that my CPU likes to do up to 100°C. I have got these readings from SpeedFan 4.42. I have a Intel Quad Core unclocked. I am using the standard intel fan with heatsink that came with the prossesor My case is a Cooler Master and I have two fans installed on the case. I took the side off to see if that helped. It lowered the temp be 3C. I don't really want to blow the processor and I don't know how to cool it down.

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  • need help setting up a VPN for remote computer connection

    - by Chowdan
    I am on a low budget right now. I am currently in the process of starting a computer company. I am in need of a VPN network so I can run Dameware tools for working on customers/partners computers remotely. I will be working with Windows and some Apple and linux machines. I have desktop with an AMD Phenom II 965BE(currently running stable at 3.8Ghz) processor with 8 GB of ram and a radeon hd 6870(i know graphics aren't too useful) and about 1.5TB of HDD space. I am attempting to create a network out of my office based all on one machine that would also be secure for me to remotely connect to my partners computers so when they have issues I would be able to connect and do the diagnosing and repairs remotely. What types of servers besides a VPN server would i need to create this? I have access to all Microsoft products so I can run Windows Server 2012, Windows Server 2008 R2, or any other Microsoft Software. thanks for the help all

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  • How can I set clean urls (enable rewrite) if I don't have a domain ?

    - by Patrick
    In order to enable clean urls in Drupal, I add the lines below to the lighttpd configuration file. However I'm now working on a local server and I don't have a domain available. So I need to work with this address http://local.ip/Sites/mywebsite I've tried to replace ["host"] with ["socket"] and replace the domain with ip and subfolders (see address above), but unsuccessfully. How can I set the configuration file to set clean urls even if I don't have a domain ? thanks $HTTP["host"] =~ "(^|\.)mywebsite\.com" { server.document-root = "/var/www/sites/mywebsite" server.errorlog = "/var/log/lighttpd/mywebsite/error.log" server.name = "mywebsite.com" accesslog.filename = "/var/log/lighttpd/mywebsite/access.log" include_shell "./drupal-lua-conf.sh mywebsite.com" url.access-deny += ( "~", ".inc", ".engine", ".install", ".info", ".module", ".sh", "sql", ".theme", ".tpl.php", ".xtmpl", "Entries", "Repository", "Root" ) # "Fix" for Drupal SA-2006-006, requires lighttpd 1.4.13 or above # Only serve .php files of the drupal base directory $HTTP["url"] =~ "^/.*/.*\.php$" { fastcgi.server = () url.access-deny = ("") } magnet.attract-physical-path-to = ("/etc/lighttpd/drupal-lua-scripts/p-.lua") }

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  • Restarting nginx backends without losing requests

    - by Oli
    I'm sure it's been asked before in different words but I run several Django sites via uwsgi (emporer mode) behind nginx. It's all a fairly standard configuration but I find that if I restart the central uwsgi process, nginx just bombs out 502s rather than waiting for the socket to become available. I recognise that most of this is probably for a reason but people seeing 502 errors really stings me. It's certainly not something I want a client to see. So... Can I beg nginx to wait/retry backends? Or, Is there anything (other than the obvious) I can do to minimise commercial damage from uwsgi restarts?

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  • Random Connections to MySQL refused (Error 111)

    - by joatis
    A Perl/CGI webapp that has been running fine for almost a year has started to randomly been unable to connect to a remotely hosted MySQL. The Error thrown is : Can't connect to MySQL server on 'xx.x.xxx.xx' (111) Reloading the page often solves the problem The client is using Perl, DBI and SSL to connect to MySQL using the same configuration file each time. MySQL 5.0 Server Running RH EL5 Quad-Core AMD Opteron(tm) Processor 2374 HE, 8 cores Real Memory: 15.73 GB total, 11.81 GB used allows networking in my.cnf max-connections are not being met load is low. The servers firewall is open to the client's subnet. The mysql user has permissions from the client's subnet. I have my host looking into the problem but so far we're all stumped as to way the occasional connection is (increasingly getting refused) Any advice what to check that would cause the random refusal of connections?

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  • Prioritize file sharing capabilities in Windows Server 2008

    - by cmbrnt
    I've got a server running Windows Server 2008, and use it mainly for sharing files throughout the domain from a number of disks. It's running on VMware ESXi 4.0, in case that matters. My problem is that when I log in to the server to check user permissions etc, the access speed the files on the remote disks almost grinds to a halt. I havn't been able to measure the speeds, but I would guess it slows down to about 100kB/s as soon as I log in. This is on a gigabit network and the problems are equal for all users, even the ones connected to the same switch as the server. I've assigned 2 GB RAM to the server, and reserved it 1,5Ghz processor power. I don't have to do anything special on the server for this halt to occur. How can I make sure file sharing is prioritized on the server, so no matter what applications I'm using it will always make sure file sharing works properly? Could this be a VMware issue?

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  • Any Microsoft SQL Server 2008 licensing restrictions on usage?

    - by ryrobes
    Does Microsoft have any problems with HOW I USE SQL Server Standard Edition 2008? I plan on using it to aggregate my clients various data sources and report on them (using the whole stack - SSIS, DB, Analysis Services and Reporting Services) via the web. I don't want to run into any issues with being accused of "re-selling" services / features when I'm not allowed to, etc. In essence, I'm charging people to build them solutions based on / using MY licensed copy and then giving them access to the final products. (reports, etc) It seems straightforward enough - but who knows with MS... (BTW, Licensed by processor / not CAL)

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