Date: Sun, 5 Jan 2020 13:10:57 +0100 (CET) From: Wojciech Puchar <wojtek@puchar.net> To: Mark Millard <marklmi@yahoo.com> Cc: Wojciech Puchar <wojtek@puchar.net>, freebsd-hackers@freebsd.org Subject: Re: processes are killed because of out of swap space Message-ID: <alpine.BSF.2.20.2001051307080.18098@puchar.net> In-Reply-To: <C1C8F724-88B0-49D9-A9DF-DB0AA8AF3164@yahoo.com> References: <C1C8F724-88B0-49D9-A9DF-DB0AA8AF3164.ref@yahoo.com> <C1C8F724-88B0-49D9-A9DF-DB0AA8AF3164@yahoo.com>
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> similar to: > > Aug 5 17:54:01 sentinel kernel: swap_pager_getswapspace(32): failed > > If you are not seeing such swap_pager_getswapspace messages, then > it is likely that the mount of swap space still available is not the > actual thing driving the kills. > > Another thing that can lead to kills is paging I/O that is > slow. paging device is nvd so it's fast. And system isn't even paging heavily. but is doing geom_raid5 rebuild right now+copying lots of files to this raid (new RAID5 just created). but still - there is A LOT of memory to be reclaimed. inactive is many gigabytes on my server. > # Delay when persisstent low free RAM leads to > # Out Of Memory killing of processes: > vm.pageout_oom_seq=120 set to 300. > some free RAM.) > > # > # For plunty of swap/paging space (will not > # run out), avoid pageout delays leading to > # Out Of Memory killing of processes: > vm.pfault_oom_attempts=-1 i don't have such sysctl. is it in FreeBSD 12? i have 11.3
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