Hi, Is there a simple way from one host to get some counters data that could be used to gauge the performance lustre is providing under a given load? We would like the following: Read_byte/sec Write_byte/sec Create/sec modify/sec We would prefer to do this form one host (mds?) Last is there a way to set a system wide default quota? Say all users get a 1TByte quota on /scratch by default. Thanks! Brock Palen Center for Advanced Computing brockp at umich.edu (734)936-1985
On Oct 09, 2007 09:57 -0400, Brock Palen wrote:> Is there a simple way from one host to get some counters data that > could be used to gauge the performance lustre is providing under a > given load? > > We would like the following: > > Read_byte/sec > Write_byte/sec > Create/sec > modify/sec > > We would prefer to do this form one host (mds?)There are stats for this, but not in a single location. The metadata stats can be seen with e.g. "llstat -i 1 mds" on the MDS, and the IO stats can be seen on the individual OSTs with "llstat -i 1 ost_io". There are other stats counters, please read the documentation. http://manual.lustre.org/manual/LustreManual16_HTML/DynamicHTML-20-1.html> Last is there a way to set a system wide default quota? Say all > users get a 1TByte quota on /scratch by default.Yes, Lustre supports quotas. Please see the documentation. http://manual.lustre.org/manual/LustreManual16_HTML/DynamicHTML-09-1.html Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc.
Yes, i found these in the pdf documentation, i was using the cached copy of manual.lustre.org when the site was down. Thanks for the llstat command though, i was looking at /proc directly. Brock Palen Center for Advanced Computing brockp at umich.edu (734)936-1985 On Oct 10, 2007, at 7:21 PM, Andreas Dilger wrote:> On Oct 09, 2007 09:57 -0400, Brock Palen wrote: >> Is there a simple way from one host to get some counters data that >> could be used to gauge the performance lustre is providing under a >> given load? >> >> We would like the following: >> >> Read_byte/sec >> Write_byte/sec >> Create/sec >> modify/sec >> >> We would prefer to do this form one host (mds?) > > There are stats for this, but not in a single location. The > metadata stats > can be seen with e.g. "llstat -i 1 mds" on the MDS, and the IO > stats can be > seen on the individual OSTs with "llstat -i 1 ost_io". There are > other > stats counters, please read the documentation. > http://manual.lustre.org/manual/LustreManual16_HTML/ > DynamicHTML-20-1.html > > >> Last is there a way to set a system wide default quota? Say all >> users get a 1TByte quota on /scratch by default. > > Yes, Lustre supports quotas. Please see the documentation. > http://manual.lustre.org/manual/LustreManual16_HTML/ > DynamicHTML-09-1.html > > Cheers, Andreas > -- > Andreas Dilger > Principal Software Engineer > Cluster File Systems, Inc. > > >