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From Rob Hartill <hart...@hyperreal.com>
Subject Re: "Broken Picture" (fwd)
Date Fri, 15 Sep 1995 19:31:16 GMT
Forwarded message:
> From mardy.hutchinson@NetAxis.qc.ca  Thu Sep 14 20:51:51 1995
> Date: Thu, 14 Sep 1995 23:51:17 -0400
> Message-Id: <199509150351.XAA12065@netaxis.netaxis.qc.ca>
> X-Sender: mardy.hutchinson@MailHost.NetAxis.qc.ca
> X-Mailer: Windows Eudora Version 1.4.3
> Mime-Version: 1.0
> Content-Type: text/plain; charset="us-ascii"
> To: apache-bugs@hyperreal.com
> From: mardy.hutchinson@NetAxis.qc.ca (Mardy Hutchinson)
> Subject: Re: "Broken Picture"
> Cc: apache-bugs@apache.org
> 
> At 08:47 AM 9/14/95 -0700, apache-bugs@hyperreal.com wrote:
> >
> >we'll look into this
> >
> >Sounds like a linux bug.
> >
> >> I'm having a very difficult time with Linux 1.2.13 / Apache 0.8.13  (and
> previous), 
> >> where, under heavy load (3 - 4  transactions per second ), a lot of
> requests seem to 
> >> have their front portion removed.
> >> 
> >>   ie, I see request that look like:  " image/jpeg" ,
> >>      instead of "GET /pics/collets/v.gif HTTP/1.0"
> 
> 
> 
>    Further:  Upgraded to 1.3.25  -- still a problem.
> 
>    
>    One note:  seems to be related to packet recombination -- if I use a
> small packet size (100 to 256 bytes), lots of broken pictures.  When I
> change to a packet size such that the whole request is in one packet, works
> well.  I can even demonstrate this in the course of one document load.
> Check out http://prices.com/pics/collets/test2.htm.  Hit "reload", and vary
> the packet size in Trumpet Winsock.
> 
>    The only point where Apache might be failing here, is by doing a
> non-blocking read on the input -- permitting some form of race condition
> that allows partial packets to be received.
> 
> 
> Regards -- Mardy Hutchinson
> 
> *-------------------------------------------------------------*
> | NetAxis Inc. -- Your chauffeurs to the Information Highway. |
> *------------- http://www.netaxis.qc.ca  ---------------------*

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