Jon Craig wrote: > On Mon, Aug 17, 2009 at 5:38 PM, Les Mikesell<lesmikes...@gmail.com> > wrote: >> Jeremy Mann wrote: > >>> I'm watching a live output of Ganglia showing network usage while the >>> backups are going. Also simple math.. I just finished one full backup, >>> 16 >>> GB in 143 minutes. That's simply unacceptable for a full backup. >> > > That equates to 21 MB/second backup rate. The speed on the network is > irrelevant because that is affected by which files actually get > transfered. The backup rate is affected by the time to calculate > checksums on the server and the client and if you have compression > turned on for your pool files then it includes the time to compress / > decompress files to/from the pool (hash collisions require complete > file comparison). What is your processor doing during this activity. > Remember that each backup session is single threaded so your speed > will be gated by the speed of a single processor.
Huh? 21MB/s would give me 100MB (megabytes) every 5 seconds. I think you are confusing MB (megabytes) and Mb (megabits) per second. 21Mb is right (about 2 MB - megabytes per second) which is what I saw for this particular server. -- Jeremy Mann jer...@biochem.uthscsa.edu University of Texas Health Science Center Bioinformatics Core Facility http://www.bioinformatics.uthscsa.edu Phone: (210) 567-2672 ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ 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/
