On 08/28/11 09:22, Maria Arrea wrote: > Hello > > We are using bacula 5.0.3 with mysql 5.0.77 on RHEL 5.7 x64. We are > backing tens millons of file and we are staring to see performance > problems with mysql. Our server has 6 GB of ram and 1 quad core Intel > Xeon E5520 @2.27 Ghz. > > We have converted from MyISAM to InnoDB in our mysql, and we have seen > some performance improvements. Doe anybody know if migrating mysql 5.0 > to 5.1 or 5.5 will improve performance with innodb?
Oracle claims on the basis of their benchmarks that MySQL 5.5 is 150% faster on Linux than MySQL 5.1, and 1500% faster on Windows. > Maybe more ram would increase also performance? We are using > my-innodb-heavy-4G.cnf as mysql configfile. How much RAM is in the machine? Most of the default config files are next to worthless. Remember that MySQL started out as a SQL DB designed for acceptable performance on machines with less than 32MB of RAM and a single 32-bit CPU core of at most a couple of hundred MHz. Is your MySQL running on a dedicated server, or does it share a box with other applications? On a dedicated MySQL server, as a rule of thumb, 80%-90% of total system RAM should be allocated to MySQL, with 75% of total system RAM in the InnoDB buffer pool. -- Phil Stracchino, CDK#2 DoD#299792458 ICBM: 43.5607, -71.355 ala...@caerllewys.net ala...@metrocast.net p...@co.ordinate.org Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater It's not the years, it's the mileage. ------------------------------------------------------------------------------ EMC VNX: the world's simplest storage, starting under $10K The only unified storage solution that offers unified management Up to 160% more powerful than alternatives and 25% more efficient. Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users