… recovery of double buffer Also we added binary builds for FreeBSD 7 64bit platform You can download current binaries (64bit) RPM for… Mac OS / Intel and .tar.gz for FreeBSD 7: http://www.percona.com/mysql/xtrabackup/0.7/. By the same link you can find…
Comment: Beware of MyISAM Key Cache mutex contention
January 12, 2010 By 10 Comments
… to a 3 weeks long 24×7 research. MySQL 5.0.81 on FreeBSD 7.0 4 quad core Xeon 16gb I was just hired… went to the FreeBSD scheduler, since it really looked a classic old style deadlock. Actually reserches revealed that FreeBSD is historically weak… and later and the investigation was moving on two tracks: FreeBSD bugs, MySQL bugs. One of the nights I got your…
Comment: MySQL random freezes could be the query cache
March 29, 2009 By 23 Comments
We are experiencing this freezing issue as well on FreeBSD 7.1 with MySQL 5.1.32. Its a pretty high … it’s top state shows “ucond” and cpu usage is 0% or very low so somehow its still doing some sort… make the server stop and restart. We were running FreeBSD 7.0 and MySql 5.0 and never saw this issue. Any help would…
Comment: How Percona diagnoses MySQL server stalls
March 9, 2011 By 6 Comments
… combinations of cores in the kernel, rebooting the server. With FreeBSD 7.0 the only way to avoid the deadlock that was affecting… use all the 16 cores. I also asked for a FreeBSD 8 machine to test its new scheduler, but actually did not help (minimal). I really believe the combination FreeBSD scheduler + MySQL mutexes + Multicores (+ crappy php code := loop&query instead…
Comment: Improved InnoDB rw_lock patch
November 19, 2008 By 3 Comments
… my trust in FreeBSD before applying the patch. Running our 7G InnoDB database on MySql 5.0.67 on FreeBSD 7.0 on a 8core…
Comment: XtraDB benchmarks - 1.5X gain in IO-bound load
December 18, 2008 By 30 Comments
Vadim, benchmarks of XtraDB on FreeBSD 7.0 or 7.1 is a very very very interesting things 
Can you publish any conditions which can motivate your team to do this?
Comment: PBXT benchmarks
November 29, 2007 By 14 Comments
… launching screen and 2x “top” with update interval set to 0 in a couple of its windows and renicing them to…/s, even after renicing of mysqld and httpd to 20. (FreeBSD-7.0, sched_ule).
Comment: MySQL 5.1 Stability
June 30, 2008 By 12 Comments
Depends upon which version of FreeBSD… FreeBSD < 7 has problems handling mutex contentions. MySQL 5.1 does hit mutexes harder than 5.0. AFAIK, these issues has been addressed on FreeBSD 7 but I haven’t examined or tried it yet.
Comment: PBXT benchmarks
November 29, 2007 By 14 Comments
… 3!! 
times slower than on the same 4cpu server: FreeBSD-6.2/7.0, amd64 both sched_4bsd an sched_ule tested 2xIntel….00GHz (quad core) 4GB ram mysql-4.1.22/from FreeBSD ports apache+php tests done with apache benchmark on a… 4 cores: 18-20 requests/s all 8 cores: 5-7 requests/s, whatever did I try to do – nothing really…
Post: JOIN Performance & Charsets
October 21, 2008 By 2 Comments
…: Using where; Using index 2 rows in set, 1 warning (0.00 sec) mysql> SHOW WARNINGS\G *************************** 1. row *************************** Level: Note Code…: 1 Extra: Using index 2 rows in set, 1 warning (0.00 sec) mysql> SHOW WARNINGS\G *************************** 1. row *************************** Level: Note Code… 3.12 seconds. This test was performed with MySQL 5.0.67, FreeBSD 7, on a box with 2GB RAM.
