On Sun, 11 Mar 2018, Matthew D. Fuller wrote: > On Sun, Mar 11, 2018 at 10:43:58AM -1000 I heard the voice of > Jeff Roberson, and lo! it spake thus: >> >> First, I would like to identify whether the wired memory is in the >> buffer cache. Can those of you that have a repro look at sysctl >> vfs.bufspace and tell me if that accounts for the bulk of your wired >> memory usage? I'm wondering if a job ran that pulled in all of the >> bufs from your root disk and filled up the buffer cache which >> doesn't have a back-pressure mechanism. > > If by "root disk", you mean the one that isn't ZFS, that wouldn't > touch anything here; apart from a md-backed UFS /tmp and some NFS > mounts, everything on my system is ZFS. > > I believe vfs.bufspace is what shows up as "Buf" on top? I don't > recall it looking particularly interesting when things were madly > swapping. I'll uncork arc_max again for a bit and see if anything odd > shows up in it, but it's only a dozen megs or so now. You are right. I forgot that it was in top and didn't notice. What I believe I need most is for someone to bisect a few revisions to let me know if it was one of my two major patches. Thanks, Jeff > > > > -- > Matthew Fuller (MF4839) | fullermd_at_over-yonder.net > Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ > On the Internet, nobody can hear you scream. >Received on Mon Mar 12 2018 - 21:19:28 UTC
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