[Lustre-discuss] [Lustre-Performance] Lustre performance on SLES 11 x86-64

udara weerapperuma udaraslt at gmail.com
Fri Oct 30 05:19:11 PDT 2009


Hi,

Please see bellow outputs

e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: RX

and there is no packet loss on the network.

Kernel Interface table
Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR   TX-OK TX-ERR TX-DRP TX-OVR
Flg
eth0   1500   0 9148114      0      0      016991786      0      0      0
BMRU
lo    16436   0   69389      0      0      0   69389      0      0      0
LRU

regards,
Udara.

On Fri, Oct 30, 2009 at 5:41 PM, Mag Gam <magawake at gmail.com> wrote:

> Check the network connections.
>
>
> What kind of network are you on? 10/100 or 100/1000? Do you see any
> dropped packets?
>
>
>
> On Fri, Oct 30, 2009 at 7:49 AM, udara weerapperuma <udaraslt at gmail.com>
> wrote:
> >
> > Hi All,
> >
> >
> > I have SLES 11 x86-64  and lustre v 1.8.1.1 installed in it. This use as
> MDS
> > and OSS.
> >
> > /dev/sda3 ----2 GB------ MDT
> > /dev/sdb2 ----5 GB------ OST1
> > /dev/sdb3 ----5 GB------ OST2
> > /dev/sdb5 ----5 GB------ OST3
> > /dev/sdb6 ----5 GB------ OST4
> >
> > Then I have 2 clients running on SLES 11 x86-64 and SLES 10 SP2 x86-64
> both
> > has the lustre v 1.8.1.1 installed.
> > The SLES 10 client gives the same speed for every bs value in dd command
> (dd
> > if=/dev/zero of=/lustre/sles10.out bs=1k gives 43 MB/s)
> > This is same for the every bs value on SLES 10 SP2.
> >
> > But for the SLES 11 x86-64 client gives only 4 MB/s speed for the small
> bs
> > values. (bs=1k )
> > It gives 45 MB/s for the bs=32k values and up.
> >
> > I have attached some outputs from the llstat command on both the clients.
> >
> > Please give me a solution to tune SLES 11 x86-64 server to get 40 MB/s
> speed
> > under bs=1k situvation.
> > tnx,
> > Udara
> >
> >
> > _______________________________________________
> > Lustre-discuss mailing list
> > Lustre-discuss at lists.lustre.org
> > http://lists.lustre.org/mailman/listinfo/lustre-discuss
> >
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20091030/2f5074c6/attachment.htm>


More information about the lustre-discuss mailing list