2008-06-15 18:35:23

by Roland

[permalink] [raw]
Subject: suse slab testing module "crasher"

>Andrew Morton <[email protected]> writes:
>>
>> Doing the same thing on 2.6.26-rc5-mm3, msgctl08 also runs to
>> completion, in 20.9 seconds. So
>>
>> - it got slower
>
>That is because it scales itself to the number of available msg queues.
>So with Nadia's patch there are more and it runs slower.
>
>In fact it seems to start one process per message queue, so perhaps it's
>just running out of processes or something. Ok it should not segfault.
>
>BTW a great way to debug slab corruptions with LTP faster is to run with
>a slab thrasher stress module like http://firstfloor.org/~andi/crasher-26.diff
>
>-Andi

any reason why only suse has this, but not mainline ?

i came across that module in suse kernel just some days ago and asked novell ( https://bugzilla.novell.com/show_bug.cgi?id=396132 ) , but they don`t have any objections.
chris mason didn`t reply on direct request....

so, if it`s useful, who is reponsible for pushing it upstream ?

______________________________________________________________
Jeden Monat 1 hochkar?tiger maxdome-Blockbuster GRATIS!
Exklusiv f?r alle WEB.DE Nutzer. http://www.blockbuster.web.de


2008-06-15 18:38:00

by Andi Kleen

[permalink] [raw]
Subject: Re: suse slab testing module "crasher"


>
> so, if it`s useful, who is reponsible for pushing it upstream ?

Nobody is. That is why it isn't. Feel free to do the work.

It would need some cleanup before submission. e.g. the ooops/panic etc. options
are fairly useless and should be removed and there needs to be more documentation.

-Andi