Hi Mark, ----- Original Message ----- > ... > On a totally different topic, and if you like we can start a different > thread on it, I'd be interested in adding some monitoring stats to collectl > for xfs and could use some suggestions of what are the most important. Did you receive any other feedback on this (offlist perhaps)? I was kinda hoping someone else would chime in, but can share our experiences with PCP if it helps. We provide options to record all xfs.* metrics & an alternative to record just the core I/O stats (so log I/O and the file read/write metrics). With PCP one can record any subset at any rate, so those are just convenience / default suggestions. In terms of recording in collectl, not sure what the requirements/parameters are for you but I'd suggest recording all the data (in save-to-disk mode), and IIRC you've got brief/verbose reporting modes - I'd focus on the log, file I/O and buffer I/O stats when being "brief", and expand out to showing in-core inode/dquot stats, ail/transaction stats, dir/attr operation stats. You might consider another very-verbose kinda view with all of the various btree stats, but that may be going too far. Note that these are all aggregate statistics, there has been on-and-off discussion for many years about adding some per-filesystem XFS stats, but to date that has not happened - perhaps someday it will, so keep that in mind for collectl too I guess. Also, be aware there is a separate file for quota metrics, for hysterical raisins (/proc/fs/xfs/xqmstat). HTH. cheers. -- Nathan _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
