On Sun, 7 Sep 2003, Rik van Riel wrote:
On Mon, 8 Sep 2003, Dag Wieers wrote:
On August 8 I added a bugreport for a machine that trashes aprox. every 2 weeks because of the kernel eating memory. You can find it here:
I know at least 2 other persons that have the same problems (on different machines with a similar workload/functionality) so it seems to be a bug in the kernel on a particular use of the VM.
The thing is, RHL8 and 9 have a completely different VM from Severn. Also, many people cannot reproduce this problem at all.
The best thing would be to try out the Severn kernel on RH9 ? I cannot simply install Severn on this system ;/
This, together with your graphs, suggests it's more likely to be a memory leak in some driver then a bug in the core VM code.
With driver you don't mean a loaded module ? Is there some way to find out what driver/module is allocating this memory ?
Do you have anything suspicious in /proc/slabinfo when your system gets close to crashing ?
It's now up 7 days (36MB used, 25MB free) so we'll see in another 5 days. These are the higher numbers:
inode_cache 812 1232 480 154 154 1 dentry_cache 572 1380 128 46 46 1 filp 620 630 128 21 21 1 buffer_head 4349 12363 100 162 317 1 mm_struct 6038 6069 224 356 357 1 vm_area_struct 1315 4920 96 38 123 1 pte_chain 729 3277 32 14 29 1
I'm not sure what I have to look for. I guess I better save this also directly after booting up.
In the RHL9 and RHL8 kernels, how big is free + active + inactive* together? How much space is unaccounted for ?
I'm not sure how it all adds up. The information I get from ps/top for all the processes is almost constant (around 12MB) whereas slowly each day +-3.5MB extra seems to be unaccounted for.
This is after 7 days running:
[root@breeg root]# free total used free shared buffers cached Mem: 61676 60648 1028 0 2212 20416 -/+ buffers/cache: 38020 23656 Swap: 457836 8876 448960
[root@breeg root]# cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 63156224 62107648 1048576 0 2277376 25321472 Swap: 468824064 9084928 459739136 MemTotal: 61676 kB MemFree: 1024 kB MemShared: 0 kB Buffers: 2224 kB Cached: 20416 kB SwapCached: 4312 kB Active: 20688 kB ActiveAnon: 7660 kB ActiveCache: 13028 kB Inact_dirty: 0 kB Inact_laundry: 7036 kB Inact_clean: 580 kB Inact_target: 5660 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 61676 kB LowFree: 1024 kB SwapTotal: 457836 kB SwapFree: 448964 kB
Kind regards, -- dag wieers, dag@wieers.com, http://dag.wieers.com/ -- [Any errors in spelling, tact or fact are transmission errors]