Re: Re: Non Blocking write in apache

[Hemant Chaudhary <hemantdude.chaudhary@xxxxxxxxx>]

If it will flush data then at what condition it will go to apr_poll function ?? 

What I understand is that if buffer is filled with 52KB data and writev is not ready then it should go into apr_poll(). 

Now the problem may exist with 42KB also. 

I hope I am explained my issue. 

Thanks

Hemant

On Sep 17, 2018 6:58 PM, "Yann Ylavic" <ylavic.dev@xxxxxxxxx> wrote:

Hi,

On Mon, Sep 17, 2018 at 1:51 PM Hemant Chaudhary
<hemantdude.chaudhary@gmail.com> wrote:
>
> in the apache error_log with trace6, it is trying to flush because it reached thresold_max_buffer. But at the same time, it is adding data in buffer which increases it size to to more than 52KB and fails on NonStop.

Yes, THRESHOLD_MAX_BUFFER is the limit *above* which the buffer is
flushed, but not the maximum number of bytes flushed...

> How should I stop apache so that it should go to select function till 52KB success.

The simpler would be to take a 10K margin, like defining
THRESHOLD_MAX_BUFFER to 42K.
Otherwise, you need a patch like the one attached (untested)...

Regards,
Yann.


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