Re: ARC "pressured out", how to control/stabilize ? (reformatted to text/plain)

Dear Andriy,

system uptime is 8 days, 20:26

Output:

kstat.zfs.misc.arcstats.evict_l2_cached: 9771077767680
kstat.zfs.misc.arcstats.evict_l2_eligible: 3844577713152
kstat.zfs.misc.arcstats.evict_l2_ineligible: 8855320643072
kstat.zfs.misc.arcstats.l2_hits: 79824726
kstat.zfs.misc.arcstats.l2_misses: 217864980
kstat.zfs.misc.arcstats.l2_feeds: 760023
kstat.zfs.misc.arcstats.l2_rw_clash: 61903
kstat.zfs.misc.arcstats.l2_read_bytes: 3058416338944
kstat.zfs.misc.arcstats.l2_write_bytes: 2487863166464
kstat.zfs.misc.arcstats.l2_writes_sent: 732146
kstat.zfs.misc.arcstats.l2_writes_done: 732146
kstat.zfs.misc.arcstats.l2_writes_error: 0
kstat.zfs.misc.arcstats.l2_writes_hdr_miss: 51888
kstat.zfs.misc.arcstats.l2_evict_lock_retry: 4416
kstat.zfs.misc.arcstats.l2_evict_reading: 1
kstat.zfs.misc.arcstats.l2_free_on_write: 282867
kstat.zfs.misc.arcstats.l2_cdata_free_on_write: 326028
kstat.zfs.misc.arcstats.l2_abort_lowmem: 1348
kstat.zfs.misc.arcstats.l2_cksum_bad: 0
kstat.zfs.misc.arcstats.l2_io_error: 0
kstat.zfs.misc.arcstats.l2_size: 257940027392
kstat.zfs.misc.arcstats.l2_asize: 108789048832
kstat.zfs.misc.arcstats.l2_hdr_size: 881715600
kstat.zfs.misc.arcstats.l2_compress_successes: 60790954
kstat.zfs.misc.arcstats.l2_compress_zeros: 0
kstat.zfs.misc.arcstats.l2_compress_failures: 1738173
kstat.zfs.misc.arcstats.l2_write_trylock_fail: 1168505250
kstat.zfs.misc.arcstats.l2_write_passed_headroom: 29511803
kstat.zfs.misc.arcstats.l2_write_spa_mismatch: 1307899433
kstat.zfs.misc.arcstats.l2_write_in_l2: 51108634609
kstat.zfs.misc.arcstats.l2_write_io_in_progress: 637
kstat.zfs.misc.arcstats.l2_write_not_cacheable: 100398037509
kstat.zfs.misc.arcstats.l2_write_full: 97839
kstat.zfs.misc.arcstats.l2_write_buffer_iter: 760023
kstat.zfs.misc.arcstats.l2_write_pios: 732146
kstat.zfs.misc.arcstats.l2_write_buffer_bytes_scanned: 4642717602824192
kstat.zfs.misc.arcstats.l2_write_buffer_list_iter: 48013995
kstat.zfs.misc.arcstats.l2_write_buffer_list_null_iter: 80483



Andriy Gapon wrote:
AG> on 18/02/2014 15:47 Vitalij Satanivskij said the following:
AG> > No checksume errors or any other errors found for now.
AG> 
AG> Thank you again!
AG> Could you please send me an output of
AG> sysctl kstat | fgrep 'l2'
AG> from a system that has been patched and with a sufficiently long uptime?
AG> 
AG> -- 
AG> Andriy Gapon