[Lustre-discuss] 1.8.1.1 write slow performance :/

[Piotr Wadas]

One more thing - server is lustre 1.8.1.1, and client is lustre 1.8.1,
didn't upgraded kernels on clients yet.
DT

-- 
Linux aleft 2.6.27.29-0.1_lustre.1.8.1.1-default #1 SMP
drbd 8.3.5-(api:88/proto:86-91)
pacemaker 1.0.6-cebe2b6ff49b36b29a3bd7ada1c4701c7470febe
Lustre 1.8.1.1-20091009080716-PRISTINE-2.6.27.29-0.1_lustre.1.8.1.1-default

On Sun, 8 Nov 2009, Piotr Wadas wrote:

> 
> To be exact, I got similar rates with hundred files , one megabyte each.
> so it's rather not about size of the files. 
> Lustre client rate is 100+ download and 4.9 upload, and 
> nfs => remote nfs => local lustre client => local lustre server,
> via the same ethernet interface, is 180+ download and ~100 upload.
> 
> With upload to remote server data are read from local /dev/zero and 
> written to drbd volume, download from remote server data are read from 
> file, and written to local ext3 volume, in both cases.
> 
> ...
> 
> Regards,
> DT
> 
>