…High Availability and Scalability solution for MySQL Users and is based on Percona Server 5.5.20. With this release we… provide tar.gz and RPM binaries for RedHat (CentOS, Oracle Linux) 5 and 6, and Debian packages. Downloads: http://www…l=’y';fs=’16′;fsb=’13′;bw=’100′;ff=’4‘;pc=’4889F0′;b=’s'; pid=’…
Post: MySQL 5.0, 5.1 and Innodb Plugin CPU Efficiency
December 3, 2008 By 15 Comments
… as follows: The system was 2* Quad Core Xeon E5310, CentOS 5, Data stored on ramfs. We controlled number of cores used… this patch not full patch set in testing. MySQL 5.1 is 4% slower than MySQL 5.0 with two cores and just 2% slower with 8 cores, thus showing a bit better scalability. MySQL 5…
Post: Announcing Percona Server 5.1.66-14.1
October 26, 2012 By Leave a Comment
… from the Percona Software Repositories). Based on MySQL 5.1.66, including all the bug fixes …the upstream MySQL bug #62856 where check for “stack overrun” wouldn’t work with gcc-4.6 …fixed #978036 (Laurynas Biveinis). Postfix would crash on CentOS/RHEL 6.x when using shared dependency (libmysqlclient…
Post: Percona XtraDB Cluster 5.5.20 - Beta release
February 23, 2012 By 10 Comments
… Scalability solution for MySQL Users and the beta release is based on Percona Server 5.5.20 and the …provide tar.gz and RPM binaries for RedHat (CentOS, Oracle Linux) 5 and 6, and Debian packages. Downloads: http://…=’y';fs=’16′;fsb=’13′;bw=’100′;ff=’4‘;pc=’4889F0′;b=’s'; pid=’109242749016593233313…
Post: Percona Server version 10
April 13, 2010 By 3 Comments
…. Since the previous release 9.1 there are following changes MySQL 5.1.45 as a basis for the release I_S… added. The full list includes (karmic is new): CentOS 5 (x86_64 and i386) CenOS 4 (x86_64 and i386) Debian lenny (x86… the release: Bug #551379:Change SE Name at mysql start Bug #550867:5.1.45+xtradb-10 compilation fails on Ubuntu Karmic…
Post: SystemTap - DTrace for Linux ?
September 14, 2009 By 17 Comments
… is included in RedHat 5 releases, but I was not able to get it running even in CentOS 5.3 (it crashed and hung every so often). Latest updated RedHat 5.4 promised some more fixes… application, as you may know DTrace-probes were added into MySQL 5.4, so interesting how it works. I should mention that there…
Post: Impact of memory allocators on MySQL performance
July 5, 2012 By 11 Comments
…, jemalloc-2.2.5, jemalloc-3.0, tcmalloc(gperftools-2.0), glibc-2.12.1(new malloc)(CentOS 6.2), glibc-2… my experince this new malloc behaved not always efficiently with MySQL so i decided to include old one to comparison as… CentOS gcc(version 4.4.6 20110731). All of them were built with -O3. I used LD_PRELOAD for lockless, jemalloc-2.2.5…
Post: MySQL performance: Impact of memory allocators (Part 2)
March 8, 2013 By 12 Comments
… use Dell R720 box(spec), Centos 6.3, upcoming Percona Server 5.5.30 and 3 allocators – … server behavior under very high pressure Observations: 4 vcpu – again no difference between allocators (~50,000qps… MySQL. # Test: POINT_SELECT:throughput, QPS # # Set 1 – 5.5.30pre-jemalloc-3.0.0 # Set 2 – 5.5….
Post: table_cache negative scalability
November 16, 2009 By 23 Comments
… on LRU logic. MySQL Sandbox helped me to test this with different servers easily. I did test on CentOS 5.3, Xeon E5405, 16GB RAM and EXT3 file system on the SATA hard drive. MySQL 5.0.85 Created… bit worse than MySQL 5.0.85. So the problem is not fixed in MySQL 5.1, lets see how MySQL 5.4 behaves. MySQL 5.4.2 MySQL 5.4.2 has…
Post: RAID vs SSD vs FusionIO
May 1, 2009 By 17 Comments
… do that I had to switch from CentOS 5.2 to Ubuntu 8.10, as CentOS was not able to start with attached… IO-bound workload on all devices. For tests I used MySQL 5.4/InnoDB, and all other parameters are the same from previous… and to have the same space as FusionIO we need 4 cards (but it still will be cheaper than FusionIO), but…
