Messages in this thread | | | Date | Wed, 15 Aug 2001 17:21:40 +0300 (MET DST) | From | Szabolcs Szakacsits <> | Subject | Re: 2.4.8 Resource leaks + limits |
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On Wed, 15 Aug 2001, Alexander Viro wrote: > > The more serious part of my little alloc adventure is much more dangerous: > > Whattaheck happened to my resources? > > I _still_ can't log in to that box as a luser (root works). > May be memory fragmentation. You need an order 1 allocation for fork(), just > to allocate task_struct...
No, 2.4.8 seems to like to soft lockup in cases after it used up all swap. I also run some trivial memory stressing tests on a UP, 128 MB, 256 swap, 7 MB/sec UDMA disk subsytem box and after a couple of successful recovery [couple = max 1 in my case] the system soft locks. swap space was 0, no disk activity, CPU apparently spins in kswapd, all relevant zones, inactive_* had plenty free pages and no memory fragmentation. After it soft locked none of the VM stat value changed at all. Rik also called for help in another thread but the problem seems to be not out_of_memory() tuning (when to jump in) however either accounting bug or other (kswapd related?) thing - kernel stacks were a bit strange [using Right_ALT+Scroll_Lock when soft locked], like page_launder do_try_to_free_pages kswapd kswapd kswapd
Szaka
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