When I watch the activity leds of the disks on one of our ZFS servers, I notice there will be a burst of activity for 3 or 4 seconds, then no activity for a couple of seconds, then it repeats. Is that normal?
Thanks, joe Joe McGuckin ViaNet Communications j...@via.net 650-207-0372 cell 650-213-1302 office 650-969-2124 fax > On Aug 15, 2023, at 12:33 PM, Alexander Leidinger <alexan...@leidinger.net> > wrote: > > Am 2023-08-15 14:41, schrieb Mateusz Guzik: > >> With this in mind can you provide: sysctl kern.maxvnodes >> vfs.wantfreevnodes vfs.freevnodes vfs.vnodes_created vfs.numvnodes >> vfs.recycles_free vfs.recycles > > After a reboot: > kern.maxvnodes: 10485760 > vfs.wantfreevnodes: 2621440 > vfs.freevnodes: 24696 > vfs.vnodes_created: 1658162 > vfs.numvnodes: 173937 > vfs.recycles_free: 0 > vfs.recycles: 0 > >> Meanwhile if there is tons of recycles, you can damage control by >> bumping kern.maxvnodes. > > Looks like there are not much free directly after the reboot. I will check > the values tomorrow after the periodic run again and maybe increase by 10 or > 100 so see if it makes a difference. > >> If this is not the problem you can use dtrace to figure it out. > > dtrace-count on vnlru_read_freevnodes() and vnlru_free_locked()? Or something > else? > > Bye, > Alexander. > > -- > http://www.Leidinger.net alexan...@leidinger.net: PGP 0x8F31830F9F2772BF > http://www.FreeBSD.org netch...@freebsd.org : PGP 0x8F31830F9F2772BF
