Date: Tue, 12 Feb 2019 12:57:40 -0500 (EST) From: Garrett Wollman <wollman@bimajority.org> To: freebsd-stable@freebsd.org Subject: Re: 11.2-STABLE kernel wired memory leak Message-ID: <201902121757.x1CHve0h056876@hergotha.csail.mit.edu> References: <d8c7abc0-3ba1-40e4-22b1-1b30d28ced14@grosbein.net>
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In article <d8c7abc0-3ba1-40e4-22b1-1b30d28ced14@grosbein.net> eugen@grosbein.net writes: >Long story short: 11.2-STABLE/amd64 r335757 leaked over 4600MB kernel >wired memory over 81 days uptime >out of 8GB total RAM. Not a whole lot of evidence yet, but anecdotally I'm seeing the same thing on some huge-memory NFS servers running releng/11.2. They seem to run fine for a few weeks, then mysteriously start swapping continuously, a few hundred pages a second. The continues for hours at a time, and then stops just as mysteriously. Over time the total memory dedicated to ZFS ARC goes down but there's no decrease in wired memory. I've tried disabling swap, but this seems to make the server unstable. I have yet to find any obvious commonality (aside from the fact that these are all large-memory NFS servers which don't do much of anything else -- the only software running on them is related to managing and monitoring the NFS service). -GAWollman
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