high bandwidth configuration help

[Yordan Georgiev]

Use bonnie for test you storage space. And exucate "dmesg" (for Linux OS)
and view any network problem.


On Sun, Feb 24, 2008 at 6:27 PM, Igor Sysoev <is at rambler-co.ru> wrote:

> On Sun, Feb 24, 2008 at 09:47:02AM +0000, nginx.mailinglist wrote:
>
> > Hi
> >
> > thanks for all the replies! i should have provided more details but I
> was in
> > dispair and it was late at night, have clear head now after good sleep.
> >
> > Ok heres info requested, the servers (i have another 6 pushing 120~mbit
> > average with lighttpd 1.4 compiled now, all servers same config)
> >
> >
> >
> > OS: Suse 10.3 (minimal, i have barely anything installed and allmost
> > everythign compiled by me)  http://pastebin.com/m41b5a046
> >
> > Applications Running:
> > *nginx_0.5.35 (compiled http://pastebin.com/m6462475a )  used for file
> > downloads
> > *php_5.2.5 (compiled  http://pastebin.com/m3c02ea6e , ~20 threads
> started
> > with lighttps spawn fcgi), very short php scripts are run that use
> > X-Accell-Redirect to pass control to nginx of file serving
> > *lighttpd_1.5r2048 (compiled) used for file uploads, due to the progress
> > meter, fairly stable in production tho its from the svn
> > *custom php_cli socket deamons for inter server RPC, these are very
> light
> >
> >
> > *top http://pastebin.com/m2587b666*
> > *dstat http://pastebin.com/m2055efd4*
> > *df http://pastebin.com/m724e52a7*
> > *vmstat http://pastebin.com/m5cdc2f0b*
> > **
> > heres *lighttpd 1.4.18 config* from other servers on network (they are
> all
> > pretty much same just differing hosts) http://pastebin.com/m7b1af1e6
> >
> >
> > now the only thing that changed on this server is lighttpd 1.4.18 was
> > replaced by nginx, and now the request go thru nginx X-AcellRedirect not
> > lighttpd's mod_secdownload
> >
> > the php5 fcgi scripts are very small it check file exists etc, then just
> > adds a downlaod id into headers for nginx to pick up and passes control
> onto
> > nginx the relevant bit is here > http://pastebin.com/m2bcbe7fd
> >
> > basically the server is capable of pushing above 100mbit easily before,
> now
> > the load is high, but this could be due to me setting high number of
> worker
> > threads like Igor said and more php-cgi processes floating around
> >
> > so to summarise I need to figure out how to tweak this so i can move all
> the
> > servers from lighttpd to nginx for file downloads
>
> You should try to set
> worker_processes 1;
>
> LA in Linux is sum of processes that run or ready to run and processes
> that
> wait for disk I/O. LA 6 and "70.5%wa" means that all 6 nginx workers wait
> for disk I/O. Here is your bottleneck.
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>


-- 
Please excuse my bad english...

С уважение,
Й. Георгиев.

WEB: http://gigavolt-bg.net/
Blog:  http://live.gigavolt-bg.net/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://nginx.org/pipermail/nginx/attachments/20080224/c276f87f/attachment.html>