1. Advertising
    y u no do it?

    Advertising (learn more)

    Advertise virtually anything here, with CPM banner ads, CPM email ads and CPC contextual links. You can target relevant areas of the site and show ads based on geographical location of the user if you wish.

    Starts at just $1 per CPM or $0.10 per CPC.

Download stuck at 99% using an application on apache

Discussion in 'Apache' started by rahulsarma, Sep 25, 2009.

0
  1. #1
    Hi,

    We have knowledgeTree php application hosted on Apache/2.2.11 (Win32) mod_ssl/2.2.11 OpenSSL/0.9.8i PHP/5.2.8.

    The application is used by users to donwload pdf documents (average size 3MB).

    Very frequently we are getting issues where the download is stuck at 99% on client machines. If its stuck for 1 user than it gets stuck for all. The only choice remaining is to restart apache.
    We have not seen any pattern to it.

    Here are some configurations we have:

    Windows server standard 2003 x64
    Intel Xeon
    8GB RAM
    Mysql 5.0
    user load: 9 concurrent users and 300 in a day. Users may on a average download 20MB of documents.
    PHP memory setting: 3072M

    http-default.conf
    Timeout 200
    MaxKeepAliveRequests 5000
    KeepAliveTimeout 10
    KeepAlive On

    http-mpm.conf -->
    <IfModule mpm_winnt_module>
    ThreadsPerChild 1920
    MaxRequestsPerChild 10
    </IfModule>

    We have tried with all combinations of MaxRequestsPerChild from 0 - 10000. and issue still persists.

    During the time its stuck the server-status doesnt show anything unusal i.e. lots of idle threads.

    Interestingly we had the issue with just 1 user downloading 3MB documents itself. So load doesnt seem to be a factor also.

    CPU usage doesnt go beyond 13%
    RAM PF usage remains at 3.3GB

    We are totally baffled. The issue is not reproducible on any other environment.

    Any help??

    Rahul
     
    rahulsarma, Sep 25, 2009 IP