slow transfers on webshare service
Nikolay Pavlov
qpadla at gmail.com
Wed Sep 19 11:02:04 PDT 2007
On Wednesday 19 September 2007 20:57:59 Miroslav Lachman wrote:
> Ivan Voras wrote:
> > Miroslav Lachman wrote:
> >>I am running Lighttpd for about 2 years on download server. With 1
> >>worker, lighttpd seems limited to 110Mbps. After change to 4 workers
> >>throughput increase to about 190Mbps serving 250-400 clients. (daily
> >>traffic is ~750GB)
> >
> > Ok. Can you run iostat during peak traffic and report its output? So
> > we rule out disk drives.
>
> I have external disk array (da1) which is saturated at this time:
>
> # iostat -w 5
> tty da0 da1 pass0
> cpu tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy
> in id 0 1 12.91 3 0.04 59.30 95 5.47 0.00 0 0.00 4 0 24
> 21 51 0 92 2.00 1 0.00 59.28 251 14.51 0.00 0 0.00 1 0 5
> 5 89 0 31 10.67 1 0.01 59.03 226 13.03 0.00 0 0.00 0 0 5
> 5 90 0 31 17.74 17 0.29 58.80 231 13.29 0.00 0 0.00 0 0 4
> 4 92 0 31 0.00 0 0.00 58.39 222 12.67 0.00 0 0.00 1 0 5
> 4 90
>
> from systat -vmstat
>
> Disks da0 da1 pass0 pass1 pass2
> KB/t 0.00 59.53 0.00 0.00 0.00
> tps 0 226 0 0 0
> MB/s 0.00 13.14 0.00 0.00 0.00
> % busy 0 97 0 0 0
>
> But without 4 workers a can't saturate array and traffic graph (by MRTG)
> will be limited on fixed bandwidth.
> So setting Lighttpd to use 4 workers definitely help in my case. (I
> don't know if it is same for Miroslav Valenta)
>
> Miroslav Lachman
> _______________________________________________
> freebsd-fs at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-fs
> To unsubscribe, send any mail to "freebsd-fs-unsubscribe at freebsd.org"
Is there any reason to do not use sendfile as it is in your lighttpd
config?
--
======================================================================
- Best regards, Nikolay Pavlov. <<<-----------------------------------
======================================================================
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part.
Url : http://lists.freebsd.org/pipermail/freebsd-fs/attachments/20070919/68482eb4/attachment.pgp
More information about the freebsd-fs
mailing list