Two things:
1) Linux write cache is likely getting in the way; you'd be better off trying
to write directly forgoing cache
2) you need to write a much bigger file than 1GB; try 50GB
Then as the previous poster said, maybe your disks aren't up to snuff or are
misconfigured.
Also, very
Is capacity potential or performance potential more important to you?
Raid type and segment size are characteristics of a disk group not a virtual
disk...so the answer is right there depending on your needs...
Then we could move the conversation on to disaster recovery as well...
Regards,
Somewhat surprised that no one has responded yet; although it’s likely that the
responses would be rather subjective…including mine, of course!
Generally I would say that it would be interesting to know more about your
datasets and intended workload; however, you mention this is to be used as
Networking overhead… vlan routing perhaps; 1) with either adding an extra
network device hop and latency from a network device/router or 2) overburdened
switch handling the routing itself still introducing network latency.
Latency is the storage and network i/o bandwidth killer.
I’m
...@gmail.com]
Sent: Thursday, March 15, 2012 9:38 AM
To: Hammitt, Charles Allen; lustre-discuss@lists.lustre.org
Subject: Re: RE: [Lustre-discuss] Lustre read performance decay when OSSes are
assigned in two different subnet
Thanks a lot , Charles.
I agree with you about this problem.
And I did more tests
Indeed; not enough time-off to drive 4k+ miles…and will not fly with the tsa…
From: lustre-discuss-boun...@lists.lustre.org
[mailto:lustre-discuss-boun...@lists.lustre.org] On Behalf Of Andre Smith
Sent: Friday, December 09, 2011 1:48 PM
To: Donald J. Kolva
Cc: wc-disc...@whamcloud.com;
