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SubjectRe: Problem with 2.4.0-test9-pre6 seems to be SHM
safemode wrote:

> Ok, compiling using a cvs of X i got a couple hours ago, I'm just
> wondering what the average segment number is for SHM on an X session
> that has been up for a while .... i'll get back with any sort of info
> on if the SHM problem has been solved with this latest CVS or if it
> continues to look like a kernel SHM problem. So far though,
> 2.4.0-test8-vm3 is handling the problem Quite well as opposed to test9,
> which died in 2 hours upon booting ...and it didn't have the added
> stress of compiling X.

It only took me 45 min to have X crash 2.4.0-test8-vm3, It occurred when i
opened and closed xawtv a few times while the system was under stress from
other apps (~1 load ) ... the shm segments kept increasing and i noticed
something strange.

------ Semaphore Status --------
used arrays = 1
allocated semaphores = 14

It's always been 0 with the previous tests and with this test9-pre6 kernel.
Not sure what the significance of it is.

SHM segments are increasing (they only go away when X closes) .. swap seems
to be stable for now here is the ipcs -u output

------ Shared Memory Status --------
segments allocated 1379
pages allocated 8770
pages resident 8329
pages swapped 0
Swap performance: 2956 attempts 0 successes

------ Semaphore Status --------
used arrays = 0
allocated semaphores = 0

------ Messages: Status --------
allocated queues = 0
used headers = 0
used space = 0 bytes

I'm not sure how that swap performance is supposed to be, i need someone to
compare to that has this stuff working and does not have the SHM problem ...
i expect to crash within an hour.

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