> To make sure you are getting the full gigabit bandwith on your servers, also use a tool to measure the connectivity between them, perhaps a tool like iperf can help.
The simplest you can run is dd + netcat:
First machine - listener:
nc -v -l 2222 > /dev/null
Second machine - sender:
dd if=/dev/zero bs=1M count=1024 | nc -v IP_OF_FIRST_MACHINE 2222
or iperf as Diego suggested:
Listener:
iperf -s
Sender:
iperf -c LISTENER_IP -t 30
Best regards,
Peter
Piotr Robert Konopelko | m: +48 601 476 440 | e: pio...@mo...
Business & Technical Support Manager
MooseFS Client Support Team
WWW | GitHub | Twitter | Facebook | LinkedIn
> On 9 Aug 2018, at 2:10 PM, Remolina, Diego J <dij...@ae...> wrote:
>
> When you say 100Mbps, do you mean megabits per second or megabytes per second? 100Mbps is much different to 100MB/s
>
> At Gigabit interconnect, your network limitation will be ~112MB/s (megabytes per second) read/writes which is the maximum bandwidth of your gigabit network cards.
>
> Have you tried mounting the file system itself on one of the servers? This should rule out network. If the reads/writes are slow there, then it may help you isolate the issue to the backend storage.
>
> To make sure you are getting the full gigabit bandwith on your servers, also use a tool to measure the connectivity between them, perhaps a tool like iperf can help.
>
> HTH,
>
> Diego
> From: Roman <int...@gm...>
> Sent: Thursday, August 9, 2018 7:39:23 AM
> To: moo...@li...
> Subject: [MooseFS-Users] speed drop
>
> Hello!
>
> I have problems with the drop in the speed of reading and writing.
> I have a 1 Gbit network. Initially, the write and read speed in the
> Moosefs cluster was ~100Mbps (3 copies of the data). At the moment it is
> about 10Mbps.
> There are no problems with the network. Switches and network cards work
> as it should.
>
> Where to dig?
>
>
> Thanks,
> Roman
>
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