[Gluster-devel] webservers vs. glusterfs vs. namespace

[Sascha Ottolski]

Am Freitag 18 Januar 2008 17:49:15 schrieb Anand Avati:
> Sascha,
>  the reason why 1.3.0pre4 might be faster would not be because of the
> missing namespace, but most likely because of missing self-heal. can
> you try with 'option self-heal off' in the unify section?


may ask again, any idea why the old apache-1.3 performs way better on 
either gluster version than the others? or any idea which knobs to 
tweak to get more out of the others?

usally, for static files from a local fileseystem, one would expect that 
nginx and lighttpd would outperform the apaches remarcably...may be my 
observations have a common cause with those of 
http://lists.nongnu.org/archive/html/gluster-devel/2008-01/msg00142.html ?


Thanks a lot, Sascha


>
> are the test results same for multiple runs too?
>
> avati
>
> 2008/1/18, Sascha Ottolski <ottolski at web.de>:
> > Hi Folks,
> >
> > I'm wondering if anyone might have some general advices if I miss
> > something important in my test setup. I'm trying to figure out how
> > to tweak the configs to achieve the best performance, but get
> > result that feel strange to me. I will post some numbers at a later
> > point, but up to now what I discovered is:
> >
> > - glusterfs without a namespace (1.3.0pre4) seems to be significant
> > faster than with namespace (tla patch-628)
> >
> > that seems to logical, at least I would expect some overhead for
> > the namespace.
> >
> > what i absolutely not understand is, how different the webservers
> > perform. i tested with
> >
> >     siege -f /tmp/siege-urls.txt.new -c100 -i -r50 -b
> >
> > with up to 3 sessions in parellel, each firing it's requests to a
> > seperate webserver (on seperate machines, of course).
> >
> > up to now my ranking by means of requests/per second is something
> > like
> >
> > 630 | apache
> > 430 | apache2 (worker)
> > 350 | nginx
> > 250 | lighttpd
> >
> > (with 1.3.0pre4 and no namespace, the best I've seen was apache2
> > with about 900, apache still 750). I must admit that up to now I
> > did not compare it to local filesystem, but from my past
> > experiences with webservers I would expect nginx and lighttpd way
> > ahead of the apaches...
> >
> > Also, I exprimented a bit with different settings for io-threads on
> > the server (1, 2, 4, 8, and cache-size 64 or 128MB), but that
> > didn't seem to make much of a difference. Same with read-ahead
> > (which seems logical, as I test with relatively small images).
> >
> > So far I did not try the booster. I use fuse-2.7.0-glfs7. I also
> > did not try the latest tla nor fuse-2.7.2-glfs8.
> >
> >
> > Thanks a lot for any pointer,
> >
> > Sascha
> >
> >
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