Re: [PATCH] preempt-kernel on 2.4.19-pre2-ac2 bugfix

Mike Fedyk
2002-03-08T19:26:19Z

On Fri, Mar 08, 2002 at 01:21:39PM +0000, Alan Cox wrote:
> > Won't this show up in rss or some other ps mem listing -or- is this
> > something that hasn't been exported to user space before on linux?
>
> It might show up in /proc/<pid>/* - the maps list will show address
> spaces. Otherwise address space leaks have always been invisible and its
> only when you leak to 3Gb of unused address space the app will notice if
> its never touching it
>

I couldn't find any processes that looked to use a lot of address space, so
I switched to single user mode (kills most everything...) and ran pstree and
/proc/memstat:

init-+-bdflush
|-init---bash---pstree
|-keventd
|-kjournald
|-ksoftirqd_CPU0
|-kswapd
|-kupdated
|-lockd
|-mdrecoveryd
`-rpciod
total: used: free: shared: buffers: cached:
Mem: 129662976 110067712 19595264 0 11984896 78237696
Swap: 500056064 40960 500015104
MemTotal: 126624 kB
MemFree: 19136 kB
MemShared: 0 kB
Buffers: 11704 kB
Cached: 76364 kB
SwapCached: 40 kB
Active: 62440 kB
Inact_dirty: 9568 kB
Inact_clean: 16780 kB
Inact_target: 17756 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 126624 kB
LowFree: 19136 kB
SwapTotal: 488336 kB
SwapFree: 488296 kB
Committed AS: 355580 kB

I'll test without preempt and see if it shows up again. It took a day
before though, so...