Date: Tue, 25 Sep 2018 18:39:22 +0200 From: Olav Gjerde <olav@backupbay.com> To: FreeBSD Filesystems <freebsd-fs@freebsd.org> Subject: Re: Troubleshooting kernel panic with zfs Message-ID: <CAJ7kQyGwGHYJ6LjL3wuQRuwVwuVOf7rMMw0PEgk%2BAY=i5iJTdg@mail.gmail.com> In-Reply-To: <41d177bf-117b-10c3-06a0-7d74d298fede@ShaneWare.Biz> References: <D54225AD-CC96-45E7-A203-D2C52E984963@goboomtown.com> <c4d7e51f-09c9-c50c-075d-8eff65e64abe@sentex.net> <41d177bf-117b-10c3-06a0-7d74d298fede@ShaneWare.Biz>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, Sep 22, 2018 at 4:54 AM Shane Ambler <FreeBSD@shaneware.biz> wrote: > > On 21/9/18 10:34 pm, Mike Tancsa wrote: > > > > Given all the issues with memory pressure perhaps ARC is eating too > > much, I would try artificially limiting it so it does not eat up too > > much RAM. We had a similar purposed server but with 32G RAM and I foun= d > > one day the system was randomly shooting processes to reclaim RAM > > > > eg > > pid xxx (yyy), uid zzzz, was killed: out of swap space > > > > I have seen these errors, for me they came when >90% ram is wired. > > This is something I reported in bug 229764. While ARC is wired, there is > also a max_wired that limits other wired allocations, these two are > independent and can total more than physical ram. > > max_wired defaults to 30% ram, so arc_max should be kept less than 70% > > I also had positive results applying review D7538 > > -- > FreeBSD - the place to B...Storing Data > > Shane Ambler > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" How large is your swap? You can check it with the swapinfo command https://www.freebsd.org/cgi/man.cgi?query=3Dswapinfo&sektion=3D8 -- Kind Regards / Med Vennlig Hilsen Olav Gr=C3=B8n=C3=A5s Gjerde BackupBay Gjerde Asalvegen 19 4051 SOLA Norway Phone: +47 918 000 59
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAJ7kQyGwGHYJ6LjL3wuQRuwVwuVOf7rMMw0PEgk%2BAY=i5iJTdg>