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Re: Speed Problem Copying Files




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

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
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