Messages in this thread Patch in this message | | | Date | Fri, 28 Dec 2001 15:30:22 +0100 | From | Jens Axboe <> | Subject | Re: 2.5.2-pre1 dbench 32 hangs in vmstat "b" state |
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On Fri, Dec 28 2001, rwhron@earthlink.net wrote: > On Fri, Dec 28, 2001 at 12:40:37PM +0100, Jens Axboe wrote: > > > I rebuilt the reiserfs that dbench writes to. > > > Here is ps -eo cmd,wchan on the k6-2 running 2.5.2-pre2: > > > > Ah this is interesting, all stuck in get_request_wait. I cannot > > reproduce your problem here whatever I do, no reiser though. > > > > -- > > Jens Axboe > > That's good news. It's probably something with my configuration > or hardware. I saw the livelock on both ext2 and reiserfs.
Thanks for an excellent report. I can't quite see what the problem should be yet, especially since the problems seem to start with 2.5.2-pre1 which doesn't really have a lot of interesting changes. I'll keep looking, though. Could you do sysrq-t for a livelocked system?
The livelocks in this mail appear different than the previous ones. Could you try running without swap?
> With the stripped config, I built 2.5.2-pre3. It panic'd > with the stripped config. 2.5.2-pre3 panic'd yesterday > on this machine's normal config too. > > Floppy drive(s): fd0 is 1.44M > FDC 0 is a post-1991 82077 > 8139too Fast Ethernet driver 0.9.22 > PCI: Found IRQ 11 for device 00:13.0 > IRQ routing conflict for 00:13.0, have irq 9, want irq 11 > eth0: RealTek RTL8139 Fast Ethernet at 0xd8800000, 00:50:bf:25:68:f3, IRQ 9 > NET4: Linux TCP/IP 1.0 for NET4.0 > IP Protocols: ICMP, UDP, TCP > IP: routing cache hash table of 4096 buckets, 32Kbytes > TCP: Hash tables configured (established 32768 bind 32768) > NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. > Kernel panic: Out of memory and no killable processes... > > I haven't noticed any reports of this panic on 2.5.2-pre3.
Someone else did report a similar case. Very strange, doesn't look bio related at all. WHat's the entire boot message for a 2.5.2-pre3 boot attempt like the above?
> I re-ran dbench 32, 128 with 2.4.17rc2aa2 on this machine and > it worked fine. I'll try 2.5.1 on this machine (2.5.1 was > okay on another machine).
2.5.1 vs 2.5.2-preX is much more interesting.
(btw, attached patch should fix your highmem oops)
--- /opt/kernel/linux-2.5.2-pre3/include/linux/blkdev.h Fri Dec 28 11:43:04 2001 +++ include/linux/blkdev.h Fri Dec 28 15:25:36 2001 @@ -228,8 +228,8 @@ * BLK_BOUNCE_ANY : don't bounce anything * BLK_BOUNCE_ISA : bounce pages above ISA DMA boundary */ -#define BLK_BOUNCE_HIGH ((blk_max_low_pfn + 1) << PAGE_SHIFT) -#define BLK_BOUNCE_ANY ((blk_max_pfn + 1) << PAGE_SHIFT) +#define BLK_BOUNCE_HIGH (blk_max_low_pfn << PAGE_SHIFT) +#define BLK_BOUNCE_ANY (blk_max_pfn << PAGE_SHIFT) #define BLK_BOUNCE_ISA (ISA_DMA_THRESHOLD) extern int init_emergency_isa_pool(void); -- Jens Axboe
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