DB Server:
Xeon 5360 (2.4Ghz 4MB Cache)
2GB RAM (Upgrade to 4GB coming this week... if we can get these issues sorted anyway).
2x 36GB Raptor's in RAID.
MySQL 5.0.x
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Now, when theres less than 1,000 users online my board the server runs fine. The front end server has a load of <2.0 and the DB server goes no higher than 4-5. As soon as there's slightly more load placed on the server it's like they seem to choke. It appears that there's no MySQL data transferred between the servers for a couple of seconds before it goes back down. It's almost like a choking effect. The servers are connected directly to each other and have 100Mbps bandwidth between the two over internal IP's. At most there's probably 60 pages being served a second. On average perhaps 25/second.
Could it be a problem with my MySQL settings? Here's my.cnf
My dedicated server has been choking/lagging the past month or so. I sent my colo some tracerts and they said the problem is on my end.
The server is a dedicated game server machine, im running 9 servers on it. No more then 3 servers are full at any one time and the maximum amount of bandwidth that has ever been used at any one time was 5 MB. My bandwidth limit is 100 Mbits, so it can't be a bandwidth limitation problem.
I was thinking maybe my firewall is blocking some packets (i have stateful packet inspection enabled). Is there any kind of tests i can do to figure out what exactly is happening? (aside from tracerts, which dont really pinpoint the problem).
I have an apache server on windows which I wanted to speed up using caching systems.
I tried installing squid, and I got it working with a basic example config. It seemed to work well, however under more heavy load I experienced some weird behaviour where network output is 0 for several seconds at the time, and all clients just hang in the wind and wait for a respons.
Remote to the server is working fine, so it's definitely a squid issue.. with only apache running the server is constantly sending out data, no halts there.
I have recently upgraded mysql server from 5.0.75 to 5.1.31 on my Ubuntu server 9.04 32 bit. After that when I am running phpmyadmin it is printing a warning :
Your PHP MySQL library version 5.0.75 differs from your MySQL server version 5.1.31.
I installed the MySQL binary packages in /usr/local/mysql/ after removing the MySQL RPM package. MySQL is functioning when I executed /usr/local/mysql/bin/safe_mysqld. I reinstalled MySQL before I installed PHP. When I used a PHP script to access a MySQL database, it outputs an error:
Code: Warning: mysqli::mysqli() [function.mysqli-mysqli]: (HY000/2002): can't connect to local mysql server through socket /var/lib/mysql/mysql.sock in index.php on line 2 However, I installed MySQL in /usr/local/mysql, not in /var/lib/mysql. How do I fix MySQL?
This is sort of a continuation to this thread here
Based upon the screenshots I provided below. What server would best suit my needs. I need this server to be able to handle the mysql usage and server load.
This server will be only for mysql. The rest of the site (html, videos) will be hosted on a different server.
If you think these servers are not enough for this please let me know any suggestions you have pertaining to server specifications.
Server 1:
Dual Core Core 2 Duo E4500 2.2Ghz 2MB Cache 500 GB SATA II Hard Drive 2 GB DDR2 SDRAM
Server 2:
Dual Core Core 2 Duo E8400 3.0Ghz 6MB Cache 500 GB SATA II Hard Drive 4 GB DDR2 SDRAM
Server 3:
Quad Core Core 2 Quad Q9300 2.5Ghz 6MB Cache 500 GB SATA II Hard Drive 4 GB DDR2 SDRAM
My site is getting big and my server can barely hold all the mysql processes.
Once I had a similar problem with bandwidth because my media files were eating quite a big chunk of it. So, I just bought a media server and changed some HTML to hotlink all the media from the media server. I would like to do something like that with my MySQL databases, to get some load off my main server.
Should I get my current host to cluster another server for mysql? Or can I use a completely different server (from a different webhost) for mysql?
we got this error on mysql db after that we have change the my.cnf value
Description : MySQL server has gone away. Please contact with your host provider, the connection time should be increased a little.
It's the reason of the session issue (I see that sometimes it's caused on the session table update). It seems like there are some problems with search.
here's my.cnf how can we fix this prpblem?
[mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock skip-locking skip-innodb #skip-networking safe-show-database query_cache_limit=1M query_cache_size=128M ## 32MB for every 1GB of RAM query_cache_type=1 max_user_connections=200 max_connections=500 interactive_timeout=10 wait_timeout=20 connect_timeout=20 thread_cache_size=128 key_buffer=512M ## 128MB for every 1GB of RAM join_buffer=1M max_connect_errors=20 max_allowed_packet=16M table_cache=1800 ## era a 1024 record_buffer=1M sort_buffer_size=4M ## 1MB for every 1GB of RAM read_buffer_size=4M ## 1MB for every 1GB of RAM read_rnd_buffer_size=4M ## 1MB for every 1GB of RAM thread_concurrency=4 ## Number of CPUs x 2 myisam_sort_buffer_size=64M server-id=1 log_slow_queries=/var/log/mysql-slow-queries.log long_query_time=2 collation-server=latin1_general_ci
telling me that mysql is hitting loads of 25, which he says is very high and i don't quite know what it means. He is strongly recommending that i shld get another dedicated server for mysql alone.
So can i get some advice on how I can assess the validity of his recommendations? I see that my CPU is load is hitting 125-150% daily. So i suppose there is some truth?
He is recommending that i get a raid-5 which is best. How can i know a suitable configuration of a new server to get? Of course, if i got all the money in the world i shld buy the best. But with constraints on budget, i want to get one (if i really need a new server) that is good for current loads with some projected margins for growth.
I've a huge site that runs on PHP and MYSQL, I'm going to get a dedicated server and make it for MYSQL so I need to know what server should I get for MYSQL ?
does it need to have lots of ram or should I get high CPU ?
I did an apache rebuild and about two hours later, my mysql stopped working.
So i tried various rebuilds to see if perhaps it was suoshin (this caused php to stop working on my server before) but to no avail, this hasnt fixed it. I cant even access the databases via phpmyadmin.
I've restarted the mysql server, apache, i've rebooted a couple times. I don't know what to do.
to pickup a dedicated MySQL 5 server from Dell running Linux. I have the option of either getting:
(1x) Quad Core Xeon E5430 2x6MB Cache 2.66Ghz
OR
(2x) Quad Core Xeon E5405 2x6MB Cache 2.00Ghz
They are about the same price. What option is best? The 4 cores but 666mhz faster each core, or double the cores (8), but less mhz per core. Can MySQL 5 even use 8 cores effectivley?
What can you do to stop so many users on your server that use mysql as apart of their website from getting this message: MySQL server has gone away
Like there has to be something installed or configured on the server that causes this as well, as I know people are taking too long to load something and it through that message, but it has to be something you can do server wide to get reed of it?
I have setup php and mysql on a windows IIS 6 server. php has installed fine and works but I have 2 problems
1. When i browse to http://localhost i get a 403 error but when browsing to http://localhost/index.php it works fine. It makes me think that the server does not know what extension to default to when doing a directory listing
2. I have phpmyadmin installed and the cfg file is set to do a 'config' authentication. That works but everytime i go to submit a form to create a new database or anything i get prompted with an HTTP user/pass. I'm not sure if this is a phpmyadmin issue or a php configuration issue
I got some questions about dedicated mysql server.
I read some things about compression used, should I give this a try? Image
Any other tweaks? The current os is centos (The server is donated) I plan to switch to debian etch or freebsd 6.2
I got my.cnf tweaked right for the 2gb of ram I think but seems alittle slower then when it was on localhost, I was thinking dedicated mysql server would be quicker, its slow enough that my light weight mysql pages are running much slower
As for the 100mbit line, what else do you guys run? I'm thinking of going to 1000mbit so I'd get about 200mbps atleast, any better way?
