On Sun, Jan 23, 2005 at 02:32:48AM -0800, Andrew Morton wrote: > Jens Axboe <[EMAIL PROTECTED]> wrote: > > > > But I'm still stuck with all of my ram gone after a > > 600MB fillmem, half of it is just in swap. > > Well. Half of it has gone so far ;) > > > > > Attaching meminfo and sysrq-m after fillmem. > > (I meant a really big fillmem: a couple of 2GB ones. Not to worry.) > > It's not in slab and the pagecache and anonymous memory stuff seems to be > working OK. So it has to be something else, which does a bare > __alloc_pages(). Low-level block stuff, networking, arch code, perhaps. > > I don't think I've ever really seen code to diagnose this. > > A simplistic approach would be to add eight or so ulongs into struct page, > populate them with builtin_return_address(0...7) at allocation time, then > modify sysrq-m to walk mem_map[] printing it all out for pages which have > page_count() > 0. That'd find the culprit.
I think I may be seeing something odd here, maybe a possible memory leak. The only problem I have is wondering whether I'm actually comparing like with like. Maybe some networking people can provide a hint? Below is gathered from 2.6.11-rc1. bash-2.05a# head -n2 /proc/slabinfo slabinfo - version: 2.1 # name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 115 ip_dst_cache 759 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 117 ip_dst_cache 770 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 133 ip_dst_cache 775 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 18 ip_dst_cache 664 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 20 ip_dst_cache 664 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 22 ip_dst_cache 673 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 23 ip_dst_cache 670 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 24 ip_dst_cache 675 885 256 15 1 bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo 24 ip_dst_cache 669 885 256 15 1 I'm fairly positive when I rebooted the machine a couple of days ago, ip_dst_cache was significantly smaller for the same number of lines in /proc/net/rt_cache. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/ 2.6 Serial core - 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/
