On Mon, 2005-04-04 at 13:04 -0700, Andrew Morton wrote: > Mingming Cao <[EMAIL PROTECTED]> wrote: > > > > On Sun, 2005-04-03 at 18:35 -0700, Andrew Morton wrote: > > > Mingming Cao <[EMAIL PROTECTED]> wrote: > > > > > > > > I run into OOM problem again on 2.6.12-rc1. I run some(20) fsx tests on > > > > 2.6.12-rc1 kernel(and 2.6.11-mm4) on ext3 filesystem, after about 10 > > > > hours the system hit OOM, and OOM keep killing processes one by one. I > > > > could reproduce this problem very constantly on a 2 way PIII 700MHZ > > > > with > > > > 512MB RAM. Also the problem could be reproduced on running the same > > > > test > > > > on reiser fs. > > > > > > > > The fsx command is: > > > > > > > > ./fsx -c 10 -n -r 4096 -w 4096 /mnt/test/foo1 & > > > > > > > > > This ext3 bug goes all the way back to 2.6.6. > > > > > I don't know yet why you saw problems with reiser3 and I'm pretty sure I > > > saw problems with ext2. More testing is needed there. > > > > > > > We (Janet and I) are chasing this bug as well. Janet is able to > > reproduce this bug on 2.6.9 but I can't. Glad to know you have nail down > > this issue on ext3. I am pretty sure I saw this on Reiser3 once, I will > > double check it. Will try your patch today. > > There's a second leak, with similar-looking symptoms. At ~50 > commits/second it has leaked ~10MB in 24 hours, so it's very slow - less > than a hundredth the rate of the first one. >
I run the test(20 instances of fsx) with your patch on 2.6.12-rc1 with 512MB RAM (where I were able to constantly re-create the mem leak and lead to OOM before). The result is the kernel did not get into OOM after about 19 hours(before it took about 9 hours or so), system is still responsive. However I did notice about ~60MB delta between Active +Inactive and Buffers+cached+Swapcached+Mapped+Slab Here is the current /proc/meminfo elm3b92:~ # cat /proc/meminfo MemTotal: 510400 kB MemFree: 97004 kB Buffers: 196772 kB Cached: 77608 kB SwapCached: 0 kB Active: 299064 kB Inactive: 83140 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 510400 kB LowFree: 97004 kB SwapTotal: 1052216 kB SwapFree: 1052216 kB Dirty: 1600 kB Writeback: 0 kB Mapped: 23256 kB Slab: 24548 kB CommitLimit: 1307416 kB Committed_AS: 73560 kB PageTables: 532 kB VmallocTotal: 516024 kB VmallocUsed: 3700 kB VmallocChunk: 512320 kB - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
