on 11/02/2014 16:38 Vitalij Satanivskij said the following: > Get first result's while testing l2 without compression > > Memory leak is not seen for now ( system working only 20 hours) but > zfs stats saying that l2 degraded > > output of zfs-stats -L: > > ------------------------------------------------------------------------ > ZFS Subsystem Report Tue Feb 11 16:34:43 2014 > ------------------------------------------------------------------------ > > L2 ARC Summary: (DEGRADED) > Passed Headroom: 3.81m > Tried Lock Failures: 79.52m > IO In Progress: 9 > Low Memory Aborts: 235 > Free on Write: 54.37k > Writes While Full: 9.68k > R/W Clashes: 2.82k > Bad Checksums: 211.94k > IO Errors: 0 > SPA Mismatch: 58.33m > > L2 ARC Size: (Adaptive) 243.32 GiB > Header Size: 0.36% 895.11 MiB > > L2 ARC Evicts: > Lock Retries: 45 > Upon Reading: 0 > > L2 ARC Breakdown: 38.15m > Hit Ratio: 17.79% 6.79m > Miss Ratio: 82.21% 31.36m > Feeds: 88.88k > > L2 ARC Buffer: > Bytes Scanned: 292.58 TiB > Buffer Iterations: 88.88k > List Iterations: 5.63m > NULL List Iterations: 17.26k > > L2 ARC Writes: > Writes Sent: (FAULTED) 77.95k > Done Ratio: 100.00% 77.95k > Error Ratio: 0.00% 0 > > ------------------------------------------------------------------------ > > As you can see we have Bad Checksums: 211.94k and > growing > > and also > Writes Sent: (FAULTED) 77.95k > Done Ratio: 100.00% 77.95k
I have no clue how this tool summarizes the statistics. I think that I would prefer output of vfs.zfs and kstat sysctl hierarchies. I have no idea what could cause those checksum errors. This will have to be investigated separately when I (or someone else) have time. > > Another question: Please provide revision number of arc.c against which was > diff created (http://people.freebsd.org/~avg/l2arc-b_tmp_cdata-diag.2.patch) > Because in version in head have some small diferent's and I need manualy aply > patch. I've just updated the patch in-place. It is now based r261726. Sorry for the previous version which was against my local tree. -- Andriy Gapon _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
