Le jeudi, 1 février 2007 11:01, vous avez écrit : > Linux sees four processors in my servers: Intel(R) Xeon(TM) CPU 3.20GHz > So 4 is a good number for me? There are only 2 physical CPUs however.
Hyperthreading (at least I guess 3.2GHz Xeons are hyperthreaded, and not dual-core) doesn't give you 2 full CPUs. The number that was circulated in the time when hypethreading was still new was that a CPU with 2 hyperthreads acts as 1.3 physical CPUs. So, I believe it's still better to use MaxBackups=2 in your case. The hyperthreaded CPUs will probably help a lot (and better than MaxBackups=4) with the I/O being done simultaneously with the rsync/compression/hashing crunching. Of course, you can do experimenting. Just look at the time backups take for a particular big host the nights before before and the ones after the modifying of this parameter (you get this info in the page of each host). (and with BackupPC3.0, you can play with these configs directly in the cgi interface, many thanks Craig!) -- Cristian Tibirna (1-418-) 656-2131 / 4340 Laval University - Quebec, CAN ... http://www.giref.ulaval.ca/~ctibirna Research professional at GIREF ... [EMAIL PROTECTED] ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
