blubee blubeeme gurenchan at gmail.com wrote on Tue Dec 12 15:58:19 UTC 2017 : > On Tue, Dec 12, 2017 at 3:34 PM, blubee blubeeme <gurenchan at gmail.com > >wrote: > > I am seeing tons of these messages while running tail -f /var/log/messages > > ============ > > Dec 12 15:11:41 blubee kernel: swap_pager_getswapspace(25): failed > . . . > > 1159 blubee 5 20 0 149M 56876K select 6 1:05 0.00% > > ibus-engine-chewing > > > > =========== > > > > What's with all the swap errors? I am running ZFS and I have 16GB of ram, > > how could I be having swap space errors? > > > > Well I added 4GB of extra swap in /var/tmp/swap0 > then added that to my /etc/fstab: md99 none swap > sw,file=/var/tmp/swap0,late 0 0 > > and those errors went away. I recommend reviewing bugzilla 206048 (title in part "swapfile usage hangs; swap partition works"): https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=206048 before using file-system based swap spaces. They have lots of problems with deadlocks. See especially comments #7 and #8 quoting Konstantin Belousov. #8 is just a reference to: https://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-deadlocks.html Comment #3 shows a way to test for the problematical behavior. Using swap partitions avoids the issue. === Mark Millard markmi at dsl-only.netReceived on Tue Dec 12 2017 - 21:00:15 UTC
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