Date: Wed, 03 Feb 2016 10:03:58 +0900 From: Hajimu UMEMOTO <ume@mahoroba.org> To: Peter Jeremy <peter@rulingia.com> Cc: stable@FreeBSD.org, mckusick@FreeBSD.org Subject: Re: 10-STABLE hangups frequently Message-ID: <yge8u32pptt.wl-ume@mahoroba.org> In-Reply-To: <20160202200738.GA78969@server.rulingia.com> References: <ygeegcvpmv1.wl-ume@mahoroba.org> <20160202200738.GA78969@server.rulingia.com>
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Hi, >>>>> On Wed, 3 Feb 2016 07:07:38 +1100 >>>>> Peter Jeremy <peter@rulingia.com> said: peter> As others have said, you need to provide lots more detail on your peter> configuration. CPU: AMD Athlon(tm) 64 Processor 3500+ Memory: 4GB HDD: 3TB I'm using ZFS only setup. peter> There were no problems at r290231 but after I upgraded to r295005, I peter> started seeing "out of swap" errors and hangs during the periodic peter> daily runs. I'm not seeing this on 1GB instances - though they are peter> all running UFS. r292875 runs well: FreeBSD asuka.mahoroba.org 10.2-STABLEFreeBSD 10.2-STABLE #5 r292875: Tue Feb 2 07:08:29 JST 2016 root@asuka.mahoroba.org:/usr/obj/usr/src/sys/ASUKA amd6 r292895 hangs: FreeBSD asuka.mahoroba.org 10.2-STABLE FreeBSD 10.2-STABLE #6 r292895: Tue Feb 2 10:17:28 JST 2016 root@asuka.mahoroba.org:/usr/obj/usr/src/sys/ASUKA amd64 I tried latest stable (r295137) with the sys/kern/vfs_subr.c part of r292895 reverted, and it seems running well, here: FreeBSD asuka.mahoroba.org 10.3-PRERELEASE FreeBSD 10.3-PRERELEASE #0 r295137M: Tue Feb 2 20:39:11 JST 2016 root@asuka.mahoroba.org:/usr/obj/usr/src/sys/ASUKA amd64 peter> Some experimentation suggested that just "find /" was enough to wedge peter> my system. I did some experimenting and found that the following peter> loader config was enough to prevent it hanging: peter> vfs.zfs.arc_max="128M" peter> vfs.zfs.arc_meta_limit="50M" peter> vfs.zfs.arc_min="25M" peter> (previously, I had no ZFS tuning at all). I had ZFS tuning before. However, after this problem was occur, I removed all of ZFS tuning. The FS related setting is only kern.maxvnodes=400000, now. Sincerely, -- Hajimu UMEMOTO ume@mahoroba.org ume@FreeBSD.org http://www.mahoroba.org/~ume/
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