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From "Michael Merkulovich" <mmerk...@hotmail.com>
Subject Re: Slow HTTP upload of POST content
Date Tue, 01 Feb 2005 23:58:51 GMT
Thanks for helping out.  I'm accessing Tomcat directly.  The 3 servers on
which the problem occurs have different network cards and also differnet
from the NIC on the one workstation where everything works fine.  The
hardware is all fairly recent.  I didn't do any packet analysis.  I'll get
Ethereal and tinker with it.  Never done that before...

Here's an interesting thing.  I tried Jetty on the same boxes and uploads go
at full network speed.

 -- Mike


----- Original Message ----- 
From: "Parsons Technical Services" <parsonstechnical@earthlink.net>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Tuesday, February 01, 2005 2:42 PM
Subject: Re: Slow HTTP upload of POST content


> Well for the life of me I can't find it either. I know I read it
somewhere.
> The idea was an issue with IE causing a fragmentation of the packets and
> retransmits. It boiled down to a bug in IE for certain versions. I don't
> remember a solution.
>
> So with that lets go after your setup.
>
> Are the machines running IIS or are you accessing Tomcat directly?
>
> Can/have you done any network analysis to see what the packets look like
and
> if there are any retransmissions?
>
> Are the network cards the same on all the servers?
>
> Doug
>
> ----- Original Message ----- 
> From: <CHRISTOPH.EMMERSBERGER@bmw.de>
> To: <tomcat-user@jakarta.apache.org>
> Sent: Tuesday, February 01, 2005 8:42 AM
> Subject: AW: Slow HTTP upload of POST content
>
>
> Sorry i did'nt find the thread, althoug I searched for somthing like this.
> If you know exactly, where the thread is, send me the adress, cause I dont
> know where it is, and it would help me a lot of, not to loose more time
> on this search.
>
> thx
>
> ------------------------------------------
>  BMW Group
>  Herr Christoph Emmersberger
>  Praktikant
>  mailto:christoph.emmersberger@bmw.de
>  Url: http://www.bmwgroup.de
> ------------------------------------------ 
>
>
> >-----Urspr√ľngliche Nachricht-----
> >Von: Parsons Technical Services
> >[mailto:parsonstechnical@earthlink.net]
> >Gesendet: Dienstag, 1. Februar 2005 14:19
> >An: Tomcat Users List
> >Betreff: Re: Slow HTTP upload of POST content
> >
> >
> >Search the archives. There is a thread on this and the cause.
> >
> >http://mail-archives.apache.org/eyebrowse/SummarizeList?listNam
> >e=tomcat-user@jakarta.apache.org
> >
> >Doug
> >
> >----- Original Message ----- 
> >From: "Michael Merkulovich" <mmerkulo@hotmail.com>
> >To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
> >Sent: Tuesday, February 01, 2005 2:14 AM
> >Subject: Slow HTTP upload of POST content
> >
> >
> >> We are experiencing a very strange problem with HTTP uploads
> >on tomcat5.
> >> When uploading large files from IE over the network, upload speed is
> >> capped
> >> at about 70kbytes/sec even though the network allows for much higher
> >> speeds.
> >> Neither CPU nor disk access appears to be the bottleneck. When using
> >> FireFox
> >> browser, upload speed is about 4000kbytes/sec. When using IE
> >from the
> >> server
> >> through loopback adapter, speed is 7000kbytes/sec.
> >>
> >> This problem is happening on 2 separate servers. One is a
> >win 2000 box
> >> with
> >> a freshly installed OS. The other one is a brand new windows
> >server 2003
> >> enterprise edition.
> >>
> >> I tried apache fileupload library and o'reilly
> >MultipartRequest. I also
> >> tried reading directly from InputStream all to the same effect.
> >>
> >> There is one machine which runs file-for-file identical tomcat
> >> installation
> >> under the same version of java. When accessing that machine
> >with IE from
> >> other boxes, uploads go fast.
> >>
> >> I cannot figure out what's different between the machine on
> >which it works
> >> and the two on which it doesn't. Any ideas?
> >>
> >> -- Mike
> >>
> >> ---------------------------------------------------------------------
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> >>
> >>
> >>
> >
> >
> >
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> >
> >
>
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>
>
>
>
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