[ replying to list, not discretely ] Quoting Lothar Schilling (2019-05-09 12:36:55) > Am 09.05.2019 um 12:26 schrieb Jonas Smedegaard: > > Quoting Lothar Schilling (2019-05-09 11:46:00) > >> Am 09.05.2019 um 11:14 schrieb Jonas Smedegaard: > >>> Quoting Lothar Schilling (2019-05-09 10:49:32) > >>>> I just set up a Stretch 9.8 system supposed to become our main > >>>> backup server. So I set up a backup job wih rsync. But the going is > >>>> really very very slooooow. Trying to figure out what's happening: > >>>> > >>>> * iperf -c [host] => bandwith almost 1000 Mbit, that's fine. > >>>> * dd if=/dev/zero of=/daten/testfile bs=1G count=10 oflag=direct > >>>> => 10737418240 Bytes (11 GB, 10 GiB) kopiert, 40,4992 s, 265 > >>>> MB/s, so that's fine as well > >>>> > >>>> But whenever I try to rsync, cp or scp - whether copy files on the > >>>> local hard disk only or over the network - speed goes down to 500 > >>>> kB/s. > >>>> > >>>> Filesystem is ext4. > >>>> > >>>> I don't have any clue about what's going on. Any kind of help would > >>>> be appreciated, thank you! > >>> Is _only_ transfer speed affected? > >>> > >>> I am no expert in this, but imagine that if you rsync massive > >>> amounts involving hardlinks then memory becomes a problem too. > >>> > >>> Perhaps run atop to monitor bottlenecks live > >>> > >>> > >>> - Jonas > >>> > >> It is most definitely not a memory or cpu problem. It's a HP Proliant > >> with 32 GB RAM and a Intel Xeon CPU 2.40GHz with 4 cores. Also the > >> problem stays the same if I just copy one large file. > > Fair enough :-) > > > > Another shot in the dark: Did you install appropriate firmware packages? > > > > - Jonas > > > No, actually I did not. But on that very same machine I had installed > Centos 7 a few days earlier. There were no problems.
I am not familiar with Centos but imagine they build kernels differently than Debian - in particular handle firmware differently. That's why I bring up that detail. NB! Debian mailinglist posting style is to post only to list: https://www.debian.org/MailingLists/#codeofconduct (I guess your posting to me discretely was simply an error) - Jonas -- * Jonas Smedegaard - idealist & Internet-arkitekt * Tlf.: +45 40843136 Website: http://dr.jones.dk/ [x] quote me freely [ ] ask before reusing [ ] keep private
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