Re: [Lustre-discuss] why so slow?

for each read() syscall that local filesystems and NFS do not have - the default debug level for lustre is punishing for small reads. Try setting sysctl -w lnet.debug=0 to test this. The default debug level will be changing in lustre 1.6.1. Cheers, Andreas -- Dr Stuart Midgley [EMAIL

Re: [Lustre-discuss] why so slow?

Extra, I zero'ed /proc/fs/lustre/llite/fs0/read_ahead_stats and re- ran the test and checked the read ahead stats afterward... and they were all zero. So, I assume this means that Lustre isn't doing any read ahead in this case. On 17/07/2007, at 9:49 AM, Stuart Midgley wrote: We

[Lustre-discuss] why so slow?

triggered by this code, but it doesn't appear to be. Any way I can tune Lustre to work better with this code? (I know, change the code, but it isn't that easy - this is a c example of an strace of a java app - and changing the original java app isn't so easy). Thanks Stu. -- Dr Stuart Midgley

[Lustre-discuss] lustre atime

Afternoon Is the atime of a file stored on the mds or on an ost? I can imagine positive and negatives with both approaches. Thanks. -- Dr Stuart Midgley [EMAIL PROTECTED] ___ Lustre-discuss mailing list Lustre-discuss@clusterfs.com https

[Lustre-discuss] lnet and route

172.16.0.0/24 eth0# lustre nic1 route add -net 172.16.1.0/24 eth1# lustre nic2 route add -net 172.16.4.0/24 eth0# compute nic1 route add -net 172.16.5.0/24 eth1# compute nic2 now, does this play well with lnet? Am I getting what I want? Thanks Stu. -- Dr Stuart Midgley [EMAIL

Re: [Lustre-discuss] failing hardware in ost

? Thanks, Robert -- Dr Stuart Midgley [EMAIL PROTECTED] ___ Lustre-discuss mailing list Lustre-discuss@clusterfs.com https://mail.clusterfs.com/mailman/listinfo/lustre-discuss

Re: [Lustre-discuss] failing hardware in ost

reading the above I guess you should probably run the getfattr/setfattr commands on the OSTs as well as the MDT. Stephen -- Dr Stuart Midgley [EMAIL PROTECTED] ___ Lustre-discuss mailing list Lustre-discuss@clusterfs.com https://mail.clusterfs.com

Re: [Lustre-discuss] failing hardware in ost

deactivate -- Dr Stuart Midgley [EMAIL PROTECTED] ___ Lustre-discuss mailing list Lustre-discuss@clusterfs.com https://mail.clusterfs.com/mailman/listinfo/lustre-discuss

[Lustre-discuss] change ip addresses

Stuart Midgley [EMAIL PROTECTED] ___ Lustre-discuss mailing list Lustre-discuss@clusterfs.com https://mail.clusterfs.com/mailman/listinfo/lustre-discuss

[Lustre-discuss] failing hardware in ost

. Will this work? Has anybody tired such a scheme? Thanks. -- Dr Stuart Midgley [EMAIL PROTECTED] ___ Lustre-discuss mailing list Lustre-discuss@clusterfs.com https://mail.clusterfs.com/mailman/listinfo/lustre-discuss