Messages in this thread | | | Date | Sat, 5 Feb 2011 17:30:33 -0500 (EST) | From | Justin Piszcz <> | Subject | Re: Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE? |
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On Sat, 5 Feb 2011, Dr. David Alan Gilbert wrote:
> * Justin Piszcz (jpiszcz@lucidpixels.com) wrote: >> >> >> On Sat, 5 Feb 2011, Emmanuel Florac wrote: >> >>> Le Sat, 5 Feb 2011 14:35:52 -0500 (EST) vous écriviez: >>> >> >> To respond to everyone: >> >>> Did you try launching 4 simultaneous cp operations over nfs to get to >>> 1.2 GB/s? >>> I've witnessed single stream copy performance with Samba being less than >>> maximum due to Samba limitations. Running multiple copy ops in parallel then >>> usually saturates the pipe. >> >> >> I tried 4 simultaenous cp's and there was little change, 250-320MiB/s. > > So I think you've said network benchmarks are OK, disc benchmarks are OK, but > a copy over the network is slow. > > What happens if you run a disc benchmark at the same time as a network benchmark; > even though the two aren't related? Can you keep the disc busy writing even when > the network is being pushed?
Hi,
Still OK when reading or writing & iperf test, so it does not appear to be I/O or backplane bound. I also put both cards on the same CPU (lane-wise) and it made no difference.
Device eth0 [10.0.1.4] (1/1): ================================================================================ Incoming: ### ### ### ### ### ### Curr: 1188.85 MByte/s ### Avg: 680.11 MByte/s ### Min: 0.00 MByte/s ### Max: 1188.88 MByte/s ### Ttl: 18.32 GByte Outgoing:
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