Current-Users archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: problem with httpd hang

In article <>,
Manuel Bouyer  <> wrote:
>On Fri, Feb 13, 2015 at 03:48:56PM +0100, Manuel Bouyer wrote:
>> [...]
>> The ktrace counts 935 writes and only 868 reads (and 868 calls to fork), so
>> the root cause of the issue may be that the master process sends too many
>> '!' to childrens.
>reading the code, the master can indeed write more '!' than the number
>of children, if all childrens are busy and take too much time to
>That should not be a problem, because then the server would fork
>more childrens until all extra '!' in the pipe have been consumed.
>So the problem is really that the kernel doens't accept the character from
>the write side of the pipe, when the read side has consumed one character.

Please write a unit test for that!


Home | Main Index | Thread Index | Old Index