> How can I know where's the bottleneck? I'm using an ext4 filesystem. > Are these tests useful? > > [root@qsrpsbk1 ~]# hdparm -t /dev/sda > > /dev/sda: > Timing buffered disk reads: 370 MB in 3.01 seconds = 122.89 MB/sec > [root@qsrpsbk1 ~]# hdparm -tT /dev/sda > > /dev/sda: > Timing cached reads: 3770 MB in 2.00 seconds = 1885.16 MB/sec > Timing buffered disk reads: 370 MB in 3.00 seconds = 123.20 MB/sec >
That is expected for a hard drive purchased in 2010 or newer. > > First I disabled 'signature=SHA1' at my Jobs and I gained little speed > of my backup (between 79 and 83 MB/s). Then I enabled Data Spooling > (so attribute spooling also is enabled) and my backups became slower > (between 36 and 45 MB/s). > Your benchmark does not measure random or small file performance (smaller than a few MB). Any mechanical hard drive will not have > 100 MB/s for this. SSDs or raid will but not a regular hard drive. John ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
