From: Justin Piszcz <jpiszcz@lucidpixels.com>
To: "Dr. David Alan Gilbert" <linux@treblig.org>
Cc: Emmanuel Florac <eflorac@intellique.com>,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-net@vger.kernel.org, Alan Piszcz <ap@solarrain.com>
Subject: Re: Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE?
Date: Sat, 5 Feb 2011 17:30:33 -0500 (EST) [thread overview]
Message-ID: <alpine.DEB.2.00.1102051729010.8518@p34.internal.lan> (raw)
In-Reply-To: <20110205220621.GB17347@gallifrey>
[-- Attachment #1: Type: TEXT/PLAIN, Size: 1952 bytes --]
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:
next prev parent reply other threads:[~2011-02-05 22:30 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-05 19:35 Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE? Justin Piszcz
2011-02-05 19:42 ` Jean Gobin
2011-02-05 19:54 ` Justin Piszcz
2011-02-05 20:18 ` Justin Piszcz
2011-02-05 20:39 ` Stan Hoeppner
2011-02-05 20:45 ` Emmanuel Florac
2011-02-05 21:05 ` Justin Piszcz
2011-02-05 22:06 ` Dr. David Alan Gilbert
2011-02-05 22:06 ` Dr. David Alan Gilbert
2011-02-05 22:30 ` Justin Piszcz [this message]
2011-02-05 22:56 ` Justin Piszcz
2011-02-05 23:54 ` Stan Hoeppner
2011-02-06 1:08 ` Justin Piszcz
2011-02-06 3:16 ` Stan Hoeppner
2011-02-06 10:16 ` Justin Piszcz
2011-02-06 13:46 ` Justin Piszcz
2011-02-06 16:44 ` Emmanuel Florac
2011-02-06 16:55 ` Zdenek Kaspar
2011-02-06 17:52 ` Justin Piszcz
2011-02-06 22:01 ` Stan Hoeppner
2011-02-07 3:59 ` Julian Calaby
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