hi, I need some urgent help. We have encountered a problem, when we try to connect in shell with a mysql client to the mysqld (via socket or via localhost). The connection takes 5 to 50 seconds, or it happens that the connection is fast, but then the "use somethingdb;" needs 5 to 50 seconds. We have tried to use some advice from here already: http://www.debianhelp.co.uk/mysqlperformance.htm We tried to use mysqltuner.pl, which is an optimizing tool. Here we set "Maximum possible memory usage:", in fact the real memory usage is few megas only. The other problem, which we found out in mysqlreport.txt, that if we set "Max used" to any number, sooner or later it gets full and that is why the "Maximum possible memory usage:" is huge in the mysqltuner.txt. okay, so I can attach the mysql config currently used and the mysqlreport.txt and mysqltuner.txt. The problem comes when the load increases during the weekend. However, this load is still not huge, around 200 connections at a time. Hope someone can help us with some good advice. Thank you in advance, Viktor
________________________________________________________<br>Dr. Csernus Imre: A férfi - Rendelje meg 20% kedvezménnyel!<br>http://bookline.hu/product/home!execute.action?tabname=konyv&type=22&_v=Dr_Csernus_Imre_A_ferfi&id=80504&tabname=book&affiliate=frejkakar8779
r...@sun:~# mysqlreport MySQL 5.0.32-Debian_7et uptime 0 1:2:8 Sun Jun 7 20:10:51 2009 __ Key _________________________________________________________________ Buffer used 5.86M of 512.00M %Used: 1.14 Current 99.22M %Usage: 19.38 Write ratio 0.45 Read ratio 0.00 __ Questions ___________________________________________________________ Total 230.79k 61.91/s Slow 723 0.19/s %Total: 0.31 %DMS: 2.39 DMS 30.20k 8.10/s 13.09 __ Table Locks _________________________________________________________ Waited 9.18k 2.46/s %Total: 30.23 Immediate 21.18k 5.68/s __ Tables ______________________________________________________________ Open 577 of 1024 %Cache: 56.35 Opened 695 0.19/s __ Connections _________________________________________________________ Max used 1227 of 2400 %Max: 51.12 Total 41.03k 11.01/s __ Created Temp ________________________________________________________ Disk table 0 0.00/s Table 56 0.02/s File 0 0.00/s
r...@sun:~# ./mysqltuner.pl >> MySQLTuner 1.0.0 - Major Hayden <ma...@mhtx.net> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.0.32-Debian_7etch10-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +Archive -BDB -Federated -InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 22M (Tables: 9) [OK] Total fragmented tables: 0 -------- Performance Metrics ------------------------------------------------- [--] Up for: 1h 3m 4s (231K q [61.137 qps], 41K conn, TX: 184M, RX: 24M) [--] Reads / Writes: 98% / 2% [--] Total buffers: 602.0M global + 24.4M per thread (2400 max threads) [!!] Maximum possible memory usage: 57.7G (367% of installed RAM) [OK] Slow queries: 0% (733/231K) [OK] Highest usage of available connections: 51% (1242/2400) [OK] Key buffer size / total MyISAM indexes: 512.0M/8.6M [OK] Key buffer hit rate: 99.7% (1M cached / 6K reads) [OK] Query cache efficiency: 84.0% (159K cached / 189K selects) [OK] Query cache prunes per day: 0 [OK] Temporary tables created on disk: 0% (0 on disk / 59 total) [OK] Thread cache hit rate: 84% (6K created / 41K connections) [OK] Table cache hit rate: 83% (577 open / 695 opened) [OK] Open file limit used: 5% (605/12K) [!!] Table locks acquired immediately: 70% -------- Recommendations ----------------------------------------------------- General recommendations: MySQL started within last 24 hours - recommendations may be inaccurate Reduce your overall MySQL memory footprint for system stability Enable the slow query log to troubleshoot bad queries Optimize queries and/or use InnoDB to reduce lock wait
-- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
