[lustre-discuss] read performance and inode_permission
Thomas Roth
t.roth at gsi.de
Wed Jan 22 04:24:28 PST 2020
Dear all,
on my quiet test system, first I clear the llite.*.stats,
lctl set_param llite.hebetest*.stats=0, then I start reading from a 22k-files directory with 'ls -l'.
After ~20 sec, I get
lctl get_param llite.hebetest*.stats
llite.hebetest-ffff881016ffa800.stats=
snapshot_time 1579695320.008491088 secs.nsecs
open 1 samples [regs]
close 1 samples [regs]
readdir 2 samples [regs]
getattr 660 samples [regs]
alloc_inode 129 samples [regs]
getxattr 1321 samples [regs]
getxattr_hits 1 samples [regs]
inode_permission 3960 samples [regs]
Basically the only counter that increases quickly is the inode_permission value.
Is this the expected behavior?
Cheers,
Thomas
--
--------------------------------------------------------------------
Thomas Roth
Department: Informationstechnologie
Location: SB3 2.291
Phone: +49-6159-71 1453 Fax: +49-6159-71 2986
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Planckstraße 1, 64291 Darmstadt, Germany, www.gsi.de
Commercial Register / Handelsregister: Amtsgericht Darmstadt, HRB 1528
Managing Directors / Geschäftsführung:
Professor Dr. Paolo Giubellino, Jörg Blaurock
Chairman of the Supervisory Board / Vorsitzender des GSI-Aufsichtsrats:
State Secretary / Staatssekretär Dr. Volkmar Dietz
More information about the lustre-discuss
mailing list