Date: Wed, 8 Aug 2018 14:42:24 -0700 From: bob prohaska <fbsd@www.zefox.net> To: Mark Johnston <markj@freebsd.org> Cc: Mark Millard <marklmi@yahoo.com>, freebsd-arm@freebsd.org, bob prohaska <fbsd@www.zefox.net> Subject: Re: RPI3 swap experiments ["was killed: out of swap space" with: "v_free_count: 5439, v_inactive_count: 1"] Message-ID: <20180808214224.GA29312@www.zefox.net> In-Reply-To: <20180806155837.GA6277@raichu> References: <23793AAA-A339-4DEC-981F-21C7CC4FE440@yahoo.com> <20180731231912.GF94742@www.zefox.net> <2222ABBD-E689-4C3B-A7D3-50AECCC5E7B2@yahoo.com> <20180801034511.GA96616@www.zefox.net> <201808010405.w7145RS6086730@donotpassgo.dyslexicfish.net> <6BFE7B77-A0E2-4FAF-9C68-81951D2F6627@yahoo.com> <20180802002841.GB99523@www.zefox.net> <20180802015135.GC99523@www.zefox.net> <EC74A5A6-0DF4-48EB-88DA-543FD70FEA07@yahoo.com> <20180806155837.GA6277@raichu>
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On Mon, Aug 06, 2018 at 11:58:37AM -0400, Mark Johnston wrote: > > If the above suggestion doesn't help, the next thing to try would be to > revert the oom_seq value to the default, apply this patch, and see if > the problem continues to occur. If this doesn't help, please try > applying both measures, i.e., set oom_seq to 120 _and_ apply the patch. > Applying both measures resulted in a panic, not entirely unlike the effect of deliberately running the machine out of swap on microSD. The first obvious sign of trouble was errors attributed to da0: (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 00 25 bc b8 00 00 80 00 (da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error (da0:umass-sim0:0:0:0): Retrying command, 3 more tries remain but instead of going on endlessly a panic followed a few lines later: swap_pager: I/O error - pageout failed; blkno 47015,size 16384, error 5 ending with panic: vm_thread_swapin: cannot get kstack for proc 615 It appears that the gstat script stopped before this, since these console messages never made it to swapscript.log. What I could think of to capture is at http://www.zefox.net/~fbsd/rpi3/swaptests/r337226M/1gbsdflash_1gbusbflash/batchqueue/pageout120/ The machine accepted a reboot command at the serial console and came up without any manual intervention. Thanks for reading, any suggestions on what to try next are welcome! bob prohaskahome | help
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