Re: [STACK] >3k call path in reiserfs

Hans Reiser
2004-06-09T18:04:27Z

Chris Mason wrote:

>On Wed, 2004-06-09 at 13:06, Hans Reiser wrote:
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>>>No such luck, the real offender is having tree balance structs on the
>>>stack. We need to switch to kmalloc for those, which will be mean some
>>>extra work to make sure we don't schedule at the wrong time.
>>>
>>>In other words, not the trivial patch I was hoping for, but I'm cooking
>>>one up.
>>>
>>>
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>>Can you give me some background on whether this is causing real problems
>>for real users?
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>Especially with the 4k stack option enabled, it will cause real problems
>for real users. A better change would be to cut down on the size of the
>tree balance struct, but that would be more invasive. For starters we
>might be able to switch from ints to shorts for some of the arrays.
>
>-chris
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Can you tell me about the "4k stack option"?