Messages in this thread |  | | Date | Fri, 30 May 2003 21:25:59 +0200 | From | Bongani Hlope <> | Subject | Re: 2.5.70-mm1 Strangeness |
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On Thu, 29 May 2003 17:51:35 -0700 Andrew Morton <akpm@digeo.com> wrote:
> "David S. Miller" <davem@redhat.com> wrote: > > > > From: Andrew Morton <akpm@digeo.com> > > Date: Thu, 29 May 2003 13:55:41 -0700 > > > > The ip_dst_cache seems unreasonably large. Unless your desktop is a > > backbone router or something. > > > > Lots of DST entries can result on any machine actually. We create one > > per source address, not just per destination address. So if you talk > > to a lot of sites, or lots of sites talk to you, you'll get a lot of > > DST entries. > > > > Regardless, 80MB _IS_ excessive. That's nearly 400,000 entries. > > It definitely indicates there is a leak somewhere. > > > > Although it say: > > > > ip_dst_cache 19470 19470 4096 1 1 > > > > Which is 19470 active objects right? > > Yes, 19470 entries. But note that each entry is 4096 bytes. > > Something seems to have gone and bumped the object size from 240 bytes up > to 4096. This is actually what I want CONFIG_DEBUG_PAGEALLOC to do, but I > don't think it does it yet. > > Bongani, if you have CONFIG_DEBUG_PAGEALLOC enabled then please try turning > it off. And maybe Manfred can throw some light on what slab has done > there. >
Turning off CONFIG_DEBUG_PAGEALLOC helped, everything is running smoothly cat /proc/sys/net/ipv4/route/max_size gave me 65536
The slabs were reclaimed before the PC died. I had a script that checked /proc/slabinfo every 10 seconds and dup it to a file. The last output was: (for the slabs you asked me to watch)
ip_dst_cache 61 61 4096 1 1 ! tunables 24 12 0 ! slabdata 61 61 0 ! globalstat 342536 53783 340902 2351 0 25 25 ! cpustat 0 2231 406871 314930 28356
ext3_inode_cache 4331 4331 4096 1 1 ! tunables 24 12 0 ! slabdata 4331 4331 0 ! globalstat 34388 26451 33205 580 0 25 25 ! cpustat 0 2459 33332 28998 2462
dentry_cache 11016 11016 4096 1 1 ! tunables 24 12 0 ! slabdata 11016 11016 0 ! globalstat 109937 29529 94505 418 0 25 25 ! cpustat 0 568369 96256 645381 8243
So it seems like CONFIG_DEBUG_PAGEALLOC was causing the problem. [unhandled content-type:application/pgp-signature] |  |