On 4/22/2010 1:55 PM, Gerald Brandt wrote: > > ----- "Les Mikesell" <lesmikes...@gmail.com> wrote: > > That's partly from being implemented in perl and partly from counting > > iowait as CPU. Do you have the --checksum-seed=32761 option enabled for > > rsync? > > > > Not to hijack the thread, but I know what checksum-seed does, but how > does it help?
If it is enabled, the backuppc server side will cache the block checksums and not have to repeat the read/uncompress/compute activity for every run. See the section on "Rsync checksum caching" in http://backuppc.sourceforge.net/faq/BackupPC.html. Note that (a) it doesn't help until the 3rd full backup and (b) a small configurable percentage is still computed to detect archive corruption. -- Les Mikesell lesmikes...@gmail.com ------------------------------------------------------------------------------ _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
