Date: Wed, 19 Sep 2007 19:57:59 +0200 From: Miroslav Lachman <000.fbsd@quip.cz> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-fs@freebsd.org Subject: Re: slow transfers on webshare service Message-ID: <46F16327.3010604@quip.cz> In-Reply-To: <fcpco6$3sv$1@sea.gmane.org> References: <1189978356.30388.11.camel@afrodita> <fclmc2$bed$1@sea.gmane.org> <46F0105A.3060309@quip.cz> <fcpco6$3sv$1@sea.gmane.org>
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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
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