Re: 2.6.10-rc1-mm4 -1 EAGAIN after allocation failure was: Re: Kernel 2.6.9 Multiple Page Allocation Failures

On Wed, Nov 10, 2004 at 01:48:11PM +0100, Stefan Schmidt wrote:

On Wed, Nov 10, 2004 at 06:58:31AM -0200, Marcelo Tosatti wrote:

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Can you try the following patch, please? It is diffed against 2.6.10-rc1,

I did. No apparent change with mm4 and vm.min_free_kbytes = 8192. I will try
latest bk next.

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I set it back to CONFIG_PACKET_MMAP=y and if the application does not freeze
for some hours at this load we can blame at least this issue (-1 EAGAIN) on
that parameter.

Nope, that didn't change anything, still getting EAGAIN, checked two times.

Its not clear to me - do you have Nick's watermark patch in? 

Yes i have vm.min_free_kbytes=8192 and Nick's patch in mm4. I'll try
rc1-bk19 with his restore-atomic-buffer patch in a few minutes.

Stefan, 

Please always run your tests with show_free_area() call at the 
page allocation failure path.

I fully disagree with Andrew when he says  
"I don't think it'd help much - we know what's happening."