Date: Sun, 06 Jan 2008 16:46:55 -0500 From: Ender <ender@enderzone.com> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: ZFS on AMD64 - any recent crashes? Message-ID: <47814C4F.7050206@enderzone.com> In-Reply-To: <flr6fm$27c$1@ger.gmane.org> References: <flr6fm$27c$1@ger.gmane.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Ivan Voras wrote: > Hi, > > In light of the recent discussion about ZFS stability, does anyone > still have kmem_map_too_small panics on AMD64 after tuning it (as > presented in http://wiki.freebsd.org/ZFSTuningGuide)? > > I'm interested in reports like this: > http://kerneltrap.org/mailarchive/freebsd-current/2007/9/21/271557 > (note that this report is for an untuned system). > > > > I have vm.kmem_size="1073741824" I used to have vm.kmem_size_max=1073741824 as well but heard it was not needed to have both. (it made no change) I never see my vfs.numvnodes over 60,000 but i have the limit at 400,000 anyways amd64 freebsd FreeBSD 7.0-BETA4 #0: Sat Dec 15 06:40:09 EST 2007 graff@nfsd.com:/usr/obj/usr/src/sys/NFSD Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Dual-Core AMD Opteron(tm) Processor 2218 (2593.52-MHz K8-class CPU) Origin = "AuthenticAMD" Id = 0x40f12 Stepping = 2 Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT> Features2=0x2001<SSE3,CX16> AMD Features=0xea500800<SYSCALL,NX,MMX+,FFXSR,RDTSCP,LM,3DNow!+,3DNow!> AMD Features2=0x1f<LAHF,CMP,SVM,ExtAPIC,CR8> Cores per package: 2 usable memory = 8580689920 (8183 MB) avail memory = 8257769472 (7875 MB) ACPI APIC Table: <091107 APIC1523> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs All this server does is run nfsd, no apache, no mysql, no rsync, no zfs snapshots either. Jan 1 15:48:09 nfsd kernel: ZFS filesystem version 6 Jan 1 15:48:09 nfsd kernel: ZFS storage pool version 6 Jan 1 15:48:09 nfsd savecore: reboot after panic: kmem_malloc(131072): kmem_map too small: 864546816 total allocated In fact i was going to paste the zpool status here, but typing it in caused the server to crash. In short i have 4 drives paired in 2 mirrors, for a raid 0 + 1 effect, normal SATA drives directly connected to zfs. I have tested this hardware thoroughly without zfs, memory test, make buildworld tests, etc so i know it is stable hardware. I hate to report bad news but i hope this leads to a fix
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?47814C4F.7050206>