[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
> >
> >
>
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