Messages in this thread | | | Date | Thu, 11 Nov 2004 12:23:13 +1100 | From | Nick Piggin <> | Subject | Re: 2.6.10-rc1-mm4 -1 EAGAIN after allocation failure was: Re: Kernel 2.6.9 Multiple Page Allocation Failures |
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Stefan Schmidt wrote:
>On Wed, Nov 10, 2004 at 06:58:31AM -0200, Marcelo Tosatti wrote: > >>>>>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. >>> > >>>>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. > >
You'll actually want to increase min_free_kbytes in order to have the same amount of memory free as 2.6.8 did.
Start by applying my patch and using the default min_free_kbytes. Then increase it until the page allocation failures stop, and let us know what the end result was.
BTW we should probably have a message in the page allocation failure path to tell people to try increasing /proc/sys/vm/min_free_kbytes...
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