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• MySQL Optimizing

  - by Thoman

  Hello My web use an dedicated Intel(R) Xeon(R) CPU E5620 8core 12Gram Centos32bit/Driectadmin DISK SAS 80G Php-cgi This dedicated running one website Use wordpress 2.92(+plugin cache...) Database size 600MB only 100online But mywebsite runing very snow. please hep me config file my.cnf [mysqld] user=mysql key_buffer=128M set-variable = max_connections=1000 socket = /var/lib/mysql/mysql.sock key_buffer =32M table_cache = 1024 open_files_limit = 16344 join_buffer_size = 8M read_buffer_size = 8M sort_buffer_size = 8M tmp_table_size=512M read_rnd_buffer_size=8M max_heap_table_size=256M #myisam_sort_buffer_size=256M thread_cache_size=8 thread_cache=32 query_cache_type=1 query_cache_limit=1024M query_cache_size=1024M thread_concurrency = 16 wait_timeout = 10 connect_timeout = 10 interactive_timeout = 10 long_query_time=1 log-slow-queries = /var/log/mysqlslowqueries.log max_allowed_packet=32M skip-innodb [myisamchk] key_buffer = 64M sort_buffer = 64M read_buffer = 16M write_buffer = 16M [isamchk] key_buffer=64M sort_buffer=64M read_buffer=16M write_buffer=16M And apache

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• mysql query not running correctly from inside the application

  - by Mala

  I am completely stumped. Here is my php (CodeIgniter) code: function mod() { $uid = $this->session->userdata('uid'); $pid = $this->input->post('pid'); if ($this->_verify($uid,$pid)) { $name = $this->input->post('name'); $price = $this->input->post('price'); $curr = $this->input->post('curr'); $url = $this->input->post('url'); $query = $this->db->query("UPDATE items SET name=".$this->db->escape($name).", price=".$this->db->escape($price).", currency=".$this->db->escape($curr),", url=".$this->db->escape($url)." WHERE pid=".$this->db->escape($pid)." LIMIT 1"); } header('location: '.$this->session->userdata('current')); } The purpose of this code is to modify the properties (name, price, currency, url) of a row in the 'items' table (priary key is pid). However, for some reason, allowing this function to run once modifies the name, price, currency and url of ALL entries in the table, regardless of their pid and of the LIMIT 1 thing I tacked on the end of the query. It's as if the last line of the query is being completely ignored. As if this wasn't strance enough, I replaced "$query = $this->db->query(" with an "echo" to see the SQL query being run, and it outputs a query much like I would expect: UPDATE items SET name='newname', price='newprice', currency='newcurrency', url='newurl' WHERE pid='10' LIMIT 1 Copy-pasting this into a MySQL window acts exactly as I want: it modifies the row with the selected pid. What is going on here???

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• IIS doesn't respond to 127.0.0.1 (external IP works fine)

  - by Jordan

  I have an AWS web server - call it box.company.com. It's running IIS and if I visit http://box.company.com in a web browser (from any machine, including box.company.com), it responds correctly with our site. However, if I visit localhost/ or 127.0.0.1/ when I'm logged into box.company.com, I get a "couldn't connect to host" message. The hosts file has only one entry - the standard "127.0.0.1 localhost" line. Pinging 127.0.0.1 works fine. Pinging localhost correctly resolves to 127.0.0.1 and works fine. I've tried restarting IIS and restarting the DNS Cache. I had this problem once before, and restarting the server fixed it, but I'd like to know what's going on in case this happens again in the future.

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• Facing difficulty with migrating from wordpress to Drupal

  - by rakibtg

  One of my blog was build of Wordpress but now i want to use Drupal as the CMS of my Blog. To do so I have deleted all the Wordpress files from my server and the Database and MySQL user which are associated with wordpress blog and uploaded the Drupal files in my server directory where the wordpress files were. But, when i have opened the blog it shows the Wordpress blog! though its been deleted and their should be the Drupal Installation interface. So, i have re-checked my server directories and database, there is not wordpress files and wp database all are deleted, there is only the drupal files, but when i go to the blog to install drupal there is still the Wordpress blog, I have checked the blog in many web browsers and there is not cache memory problem. My hosting server is linux based. can't understand what to do? Any idea? Thanks

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• How to export an SQL-Database

  - by DanPB

  in phpmyadmin to my local disk? I don't see a field where I can specify the destination.

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• How does the performance of pure Nginx compare to cpNginx?

  - by jb510

  There is now a Cpanel plugin to fairly easily setup Nginx as a reverse proxy on a Cpanel/Apache server. I've been simultaneously interested in setting up my first unmanaged VPS and my first Nginx server and as a masochist figured why not combine the two. I'm wondering however if it's worth setting up a pure Nginx server vs trying out cpNginx on Apache? My goal is solely to host WordPress sites and while what I've read raves about Nginx's is exceptional ability serving static at least as a reverse proxy, I am unclear if there is substantial benefit to running a pure nginx with eAccelorator over cpNginx on Apache for dynamic sites? Regardless I'll be running W3TC on all sites to cache content, but am still interested if there are big CPU reductions running PHP scripts under pure Nginx over cpNginx?

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• So confused by these CPU Specs can someone please help me out? THanks!

  - by Kevin

  Intel® Core™ i7-640M (2.8~3.46GHz, 35W) w/4MB Cache - 2 Cores, 4 Threads - 2.5 GT/s SO i'm buying a new laptop, which i have not done in 6 years. So i am not familiar with any of these cpu specs. It was the highest option for intel for this laptop. So i am assuming it is somewhat fast. But i'd like to learn what these specs mean. Any help would be greatly appreciated. i am not really a computer guy but would love to learn about what I am buying. Thanks!

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• What is the Best way to copy Folder using c#

  - by karthik

  I need to copy a Folder from one drive to a removable Hard disk. The Folder which needs to be copied will have many sub folders and files in it. The input will be Source Path and Target Path. Like.. Source Path : "C:\SourceFolder" Target Path : "E:\" After copying is done, i shud be able to see the folder "SourceFolder" in my E: drive. Thanks.

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• Nginx issue with two web nodes

  - by HTF

  I'm running Wordpress website with Nginx and Memcached. I have simple DNS round robin balancing with A records pointing to both web servers. I've noticed the following entries in both web servers access logs: 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 I've configured W3 Total cache plugin for Wordpress - pointing to loopback address (127.0.0.1:11211) on each Wordpress installation. Is this because the webserver is trying to access content that is cached on the other web server? Shall I add IPs to W3 plugin of both web servers on each website (192.168.1.:11211, 192.168.1.2:11211)? I'm not sure if this related to Memcached or maybe some configuration issue on the server itself? Regards

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• Web scrapping from a Google Chrome extension

  - by limoragni

  I've started to develop a Chrome extension to navigate and prform actions on a website. Until now the extension is able to receive a couple of parameters and check a set of radio-buttons, fill in a few inputs of a form and then submit it. What I want to do now is to repeat the process, but I'm stuck when the page is reloaded. And I don't know how can I do to make the script reacts to the finish of the request. The workflow I want to achieve is the following (is for automaticly copying a certain object): Popup side Enter the number of the Master object to copy Enter the base name of the copies (example Mod, so the I can iterate and add mod1, mod2, modn) Enter the number of copies Background side Select master Select standard options Fill in inputs Submit form Wait for the page to complete the request and continue to the next copy. (here I need help) The problem is on the repetition, the rest is taking care of. I assume that must be a way of dealing with requests. Any ideas? By the way I'm doing it all with the extension and tabs methods of google chrome plus javascript and jquery.

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• Java Applets fail to launch in Windows 7 64bit

  - by Steve

  Hi can you help? I'm having great trouble launching Java applets using Windows 7 64 bit. I have the 32 bit version of Java installed (as recommended, for use with 32 bit browsers). When I click on an Java applet to open it the Java logo shows with a circular progress bar, but the process goes no further, just the progress bar going round and round. There are no error messages. The computer is a few months old and Java has never worked properly. I've tried with both IE9 and Chrome, followed the suggested fixes, uninstall then reinstall, check certain browser settings (all were in order), check Java control panel settings (again all was in order) delete the internet cache etc, tried 32bit & 64bit Java side by side. All to no avail. I'm baffled Is there anything else to try, or do I have to accept a computer without Java (Very inconvenient!) Thanks

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• Boot Loop contiues [closed]

  - by user1894750

  I am facing boot loop. My backend Linux works flawlessly, But the Zygote and System server does not workout. I can still use ADB and LIVE cat .. ps show that both Zygote and system_server process are there, But boot animation remains forever !! I have : 1 Wiped Data + Cache Partition 2 System Partition has been RESTORED.. There is NO PERMISSION problem... I think that there is *problem with Zygote and System_server ..* my device: Karbonn A9+ Dual Core Snap Dragon 1.2 Ghz Ram 386MB OS : ICS 4.04 Any suggestions ??

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• Applications getting killed automatically

  - by nebi

  I am running httperf client on my m/c and after few seconds it is getting killed. dmesg shows: The command is: httperf --hog --client=0/1 --server=39.0.0.2 --port=80 --uri=/50kb --rate=20000 --send-buffer=4096 --recv-buffer=16384 --num-conns=6000000 --num-calls=1 Although I had done this test no. of times but never faced this error any time. From last two days I am observing this. My Ubuntu version is ubuntu 10.04. and httperf version is httperf-0.9.0 [ 2997.180620] Out of memory: kill process 7977 (apache2) score 70532 or a child [ 2997.180632] Killed process 7977 (apache2) [ 2997.184837] Out of memory: kill process 7971 (rsyslogd) score 8702 or a child [ 2997.184844] Killed process 7971 (rsyslogd) [ 2997.188823] Out of memory: kill process 7978 (apache2) score 1354 or a child [ 2997.188829] Killed process 7978 (apache2) [ 2997.192817] Out of memory: kill process 7973 (atd) score 561 or a child [ 2997.192822] Killed process 7973 (atd) [ 2997.196805] Out of memory: kill process 8102 (httperf) score 471 or a child [ 2997.196811] Killed process 8102 (httperf) Output of free command: total used free shared buffers cached Mem: 3862768 163000 3699768 0 2384 13068 -/+ buffers/cache: 147548 3715220 Swap: 3905528 0 3905528

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• new items on GRUB screen in ubuntu/linux

  - by artsince

  I regularly update my ubuntu (10.04), and new minor versions keep accumulating on the GRUB screen. Right now I have 5 different versions listed on the GRUB, even though I always select the latest version to work with. Am I supposed to do anything to get rid of the old version references? Do these old versions affect disk space/performance?

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• Making Internal Harddisk act as External drive to another computer

  - by GJ

  I want to use the internal Hard disk of one computer to act as an external harddisk for another computer. Is there are direct way or tool available to achieve this. I know I can share the drive and access it over network but I want to use it without network, using USB.

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• Do I really need to reboot for AD changes to be applied?

  - by stimms

  Every time I request a permission change the IT group at my company instructs me to wait 20 minutes and reboot the computer. I cannot believe that in this day and age you still need to reboot the computer to clear whatever cache stores the permissions locally. It feels like something out of the NT 4 days. Do you actually still need to reboot the computer? Is a logout/login sufficient? Is there still a long time(20 minutes) for the changes to propagate through the AD tree?

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• Is a memory upgrade a viable option to fix performance issues? [closed]

  - by ratchet freak

  I'm currently seeing my PC getting bogged down by Firefox 11.0 alone with only one hundred tabs open. Resulting in a memory use of over 530M , VM size of over 800M and an insane amount of page faults (easily reaching 100 million over the course of the day). The PF delta during normal operation easily reaches 7k with peaks to 15k sometimes reaching over 20k. This leads to a (real) deterioration to response time when switching, opening and closing tabs, opening menus, typing, ... My question is: Am I right in assuming that plugging in more RAM (either adding 2x1GB or replacing the existing RAM with 2x2GB or 4x1GB) will solve this problem? My specs: Windows XP Home Edition SP3 (32 bit) Intel Core Duo 2,4 GHz 2x512MB RAM 800MHz DDR2 (dual channel) 4MB unified cache 320GB HDD Intel G33 (X3100) onboard graphics (no graphics card but PCI express x16 slot is available)

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• Taking Database backup: How to skip '/' from getdate so that it is not considered to be in a folder

  - by Shantanu Gupta

  I am trying to take database backup. How can I do that when getdate is being appended with file name with format dd/mm/yyyy. declare @dbName VARCHAR(100) declare @path VARCHAR(100) set @dbName='CallMeIndia' set @path='F:\'+@dbName +'-'+convert(varchar(50),getdate(),103)+'.bak' BACKUP DATABASE @dbName TO DISK= @path

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• How to fix windows 7 loader?

  - by Adio

  I have an HD 250 Gb It is portioned to C,D,E C has 50 GB D has 50 GB and the rest is given to E, On C I have Windows 7, I decided to install Opensuse On E. I have installed Opensuse Successfully. Now Opensuse loader shows Windows7 option when I it loads but, when I chose to load windows 7 I get " A Disk read error occured, press ctrl+alt+e to restart". Does any one has an Idea How to fix windows 7 and keep Opensuse ? My Opensuse is 12.2. Thanks

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• Squid gives always tcp_miss reverse proxy

  - by JaakL

  I added installed latest squid3 in front of apache as reverse proxy. The problem is that it gives always tcp_miss, in fact I have not yet found a single TCP_HIT message in the log file, and most of the content is static. Relevant config values for cache_dir and refresh_pattern are default ones, directory /var/spool/squid3 exists and has some files/folders. I have 100+G free storage, but reconfigure gives warning "WARNING cache_mem is larger than total disk cache space!", which does not make any sense to me. I have googled a lot and seen with similar problems, but none of them has helped.

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• How are Cassandra's 0.7 Secondary Indexes stored?

  - by user574793

  We have been using Cassandra 0.6 and now have Column Families with millions of keys. We are interested in using the new Secondary Index feature available in the 0.7 but couldn't find any documentation on how the new index is stored. Is there any disk-space limitation or is the index stored similar to keys in that it's spread over multiple nodes? I've tried combing through the Cassandra site for an answer but to no avail.

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• Inconsistent slow DB connect times

  - by mcryan

  I have an app that shows significantly increased load times every 5 minutes. We use New Relic and I've been able to identify that every slow request is due to our DB connect functions. I've looked through our frontend servers and db servers and have ensured that there are no cronjobs running every 5 minutes - though the increase comes every 5 minutes without fail. I feel like I've tried everything I can to isolate this but I'm not having any luck. It is not coming from a cronjob, there is no cache expiring every 5 minutes, etc. What else could I check, and does anyone know of anything that could cause this sort of behavior? For what it's worth - our stack includes Apache, PHP, MySQL, Varnish and Memcache. SQL and memcache are running on dedicated servers and we have a number of frontend servers behind a load balancer, each running Apache and Varnish. Spike every 5 minutes: And it's always db connect (in red) taking up all of the time:

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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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• Why is DivMod Limited to Words (<=65535)?

  - by Andreas Rejbrand

  In Delphi, the declaration of the DivMod function is procedure DivMod(Dividend: Cardinal; Divisor: Word; var Result, Remainder: Word); Thus, the divisor, result, and remainder cannot be grater than 65535, a rather severe limitation. Why is this? Why couldn't the delcaration be procedure DivMod(Dividend: Cardinal; Divisor: Cardinal; var Result, Remainder: Cardinal); The procedure is implemented using assembly, and is therefore probably extremely fast. Would it not be possible for the code PUSH EBX MOV EBX,EDX MOV EDX,EAX SHR EDX,16 DIV BX MOV EBX,Remainder MOV [ECX],AX MOV [EBX],DX POP EBX to be adapted to cardinals? How much slower is the naïve attempt procedure DivModInt(const Dividend: integer; const Divisor: integer; out result: integer; out remainder: integer); begin result := Dividend div Divisor; remainder := Dividend mod Divisor; end; that is not (?) limited to 16-bit integers?

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• Using pair in c++

  - by user1543957

  Can someone please tell why i am unable to compile the following program #include<iostream> #include<string> #include<cmath> #include<iostream> #include<cfloat> #define MOD 10000009 using namespace std; double distance(pair<int,int> p1,pair<int,int> p2) { double dist; dist = sqrt( (p1.first-p2.first)*(p1.first-p2.first) + (p1.second-p2.second)*(p1.second-p2.second) ); return(dist); } int main() { int N,i,j; cin >> N; pair<int,int> pi[N]; for(i=0;i<N;i++) { cin >> pi[i].first >> pi[i].second; } for(i=0;i<N;i++) { cout << pi[i].first << " "<< pi[i].second << endl; } distance(pi[0],pi[1]); // This line is giving error return 0; }

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