On Wed, 2020-04-15 at 12:06 +0000, Stolte, Felix wrote: > Hi Jeff, > > Output of ganesha_stats inode: > > Timestamp: Wed Apr 15 09:37:32 2020522216985 nsecs > Inode Cache Requests: 0 > Inode Cache Hits: 361976 > Inode Cache Misses: 0 > Inode Cache Conflicts:: 2 > Inode Cache Adds: 307597 > Inode Cache Mapping: 615198 > LRU Utilization part is missing. Ahh ok...the interesting bit (the LRU Utilization part) was only added very recently (Feb 2020), so that won't be as helpful as I had hoped on older ganesha versions. One thing you could do is hook up the debugger to get the interesting part. Install the nfs-ganesha package debuginfo and: $ gdb /path/to/ganesha.nfsd gdb> p lru_state ...and collect what it prints. That'll stall the server for a bit while you're poking around in there though The entries_used field is what we're most interested in. Each entry holds a reference to a libcephfs Inode object, and that consumes resources on the MDS. We want to keep that value pretty low as a matter of course. With Entries_HWMark = 100, it should be below 100 most of the time. It can and does go above that though, so it'd be interesting to see what that looks like, particularly when the MDS is complaining about client resource utilization. -- Jeff Layton <jlayton@xxxxxxxxxx> _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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