Apache NT Performacen (was Re: Apache NT errors)

[Ambarish Malpani <am...@isecurity.com>]

Oops!!! Screwed up.

Giovanni, can you try to make sure that lingering is set OFF on the
accepted sockets in the server. I had hit this problem on a previous
project and by having lingering turned off, my server behaved
much, much better.

void
lingeroff(int sock)
{
    struct linger l;
    
    l.l_onoff = 0;
    l.l_linger = 0;

    setsocketopt(sock, SOL_SOCKET, SO_LINGER, (char *)&l, sizeof(l));
}

With this other server I was writing, I know we were able to get
1,000 connections every 10 seconds (run for over 1 hour), so I know
NT is capable of decent performance. I am not sure what setting
lingering off implies for Apache (I know there is some special code
to handle machines that don't have a lingering option for sockets....)

A


Giovanni Maruzzelli wrote:
> 
> On Thu, 26 Jun 1997, Giovanni Maruzzelli wrote:
> 
> > with the original sources from Ambarish Malpani, that you can get from
> > ftp.valicert.com, it compile almost cleanly, but under heavy load (between
> > 5 to 15 hits second) it begin to freeze up and slows down at one hit each
> > 3 to 5 seconds or more.
> >
> >
> > I've looked at this trying to figure out why (it was happening to me with
> > a testing robot, every time at some 950 hits after the start).
> 
> Verified the same problem with the IIS, so is a Microsoft or my
> configuration problem (NT 4.0 without service pack, 32 MB Ram, P150
> Intel).
> 
> > There's known remedies to that?
> >
>  ciao,
> 
>  -giovanni

-- 

---------------------------------------------------------------------
Ambarish Malpani
Architect					       (408) 738-2040
ValiCert, Inc.				      http://www.valicert.com
333 W. El Camino Real, Suite 270
Sunnyvale, CA 94087

Re: Apache NT Performacen (was Re: Apache NT errors)

[Giovanni Maruzzelli <ma...@matrice.it>]

On Thu, 26 Jun 1997, Ambarish Malpani wrote:

> Oops!!! Screwed up.
> 
> Giovanni, can you try to make sure that lingering is set OFF on the
> accepted sockets in the server. I had hit this problem on a previous
> project and by having lingering turned off, my server behaved
> much, much better.
> 

I've applied your patch throughout http_main.c, I use it with the #ifdef
USE_LINGER_SO (I know, it's just the opposite, but for testing
purposes....) when it start, and in each children (thread) immediatly
after disable_nagle.

I've had mixed results, but this not yet resolve the problem.

I'll look more deeply in that next week, 'cause now I've something has to
be finished by monday (:-(.

ciao,

-giovanni

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