2017-09-20 17:15 GMT+02:00 Ray Frush <fr...@rams.colostate.edu>: > You indicate that your ZFS store does 50-70MB/s. That's pretty slow in > today's world. I get bothered when storage is slower than a single 10K RPM > drive (~100-120MB/sec). I wonder how fast metadata operations are. > bonnie++ benchmarks might indicate an issue here as BackupPC is metadata > intensive, and has to read a lot of metadata to properly place files in the > CPOOL. Compare those results with other storage to gauge how well your ZFS > is performing. I'm not a ZFS expert.
Yes, is not very fast but keep in mind that i'm using SATA disks. But the issue is not the server performance, because all other software are able to backup in a very short time, with the same hardware. > 2) rsyncd vs rsync: > When BackupPC uses the 'rsync' method, it uses ssh to start a dedicated > rsync server on the client system with parameters picked by BackupPC > developers. > When you use the 'rsyncd' method, the options on the client side were > picked by you, and may not play well with BackupPC. It would be easy to > test around this by setting up backupPC to use the 'rsync' method instead > (setting up ssh correctly of course) and seeing if you note any improvement. > That will isolate any issues with your rsyncd configs. Ok, I can try that. > A 4x 1Gbps network link will look exactly like a single 1Gbps per network > channel (stream) unless you've got some really nice port aggregation > hardware that can spray data at 4Gbps across those. As such, unless you > have parallel jobs running (multithreaded), I wouldn't expect to see any > product do better than 1Gbps from any single client in your environment. > The BackupPC server, running multiple backup jobs could see a benefit from > the bonded connection, being able to manage 4 1Gpbs streams at the same > time, under optimal conditions, which never happens. I'm running 4 concurrent backups, with plain rsync/rsnapshot i'm able to run 8. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ 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/
