On 03/31/2011 11:40 AM, Geoff Simmons wrote:
On 03/31/11 11:15 AM, Hettwer, Marian wrote:
I'm running Centos 5.5 64bit and here's my varnish startup parameters:
DAEMON_OPTS=" -a ${VARNISH_LISTEN_ADDRESS}:${VARNISH_LISTEN_PORT} \
-f ${VARNISH_VCL_CONF} \
-T 0.0.0.0:6082 \
-t 604800 \
-u varnish -g varnish \
-s malloc,54G \
-p thread_pool_add_delay=2 \
-p thread_pools=16 \
-p thread_pool_min=50 \
-p thread_pool_max=4000 \
-p listen_depth=4096 \
-p lru_interval=600 \
-hclassic,500009 \
-p log_hashstring=off \
-p shm_workspace=16384 \
-p ping_interval=2 \
-p default_grace=3600 \
-p pipe_timeout=10 \
-p sess_timeout=6 \
-p send_timeout=10"
Hu. What are all those "-p" parameters? Looks like some heavy tweaking to
me.
Perhaps some varnish gurus might shime in, but to me tuning like that
sounds like trouble.
Unless you really know what you did there.
I wouldn't (not without the documentation at hands).
Um. Many of those -p's are roughly in the ranges recommended on the Wiki
performance page, and on Kristian Lyngstol's blog.
http://www.varnish-cache.org/trac/wiki/Performance
http://kristianlyng.wordpress.com/2009/10/19/high-end-varnish-tuning/
Perhaps one of the settings is causing a problem, but it isn't wrong to
be doing it all -- and it's quite necessary on a high-traffic site.
Best,
Geoff
In fact, this is one of my problems. I found ah hardly optimized
configuration, and I'm not yet so confident to remove lines without fear :)
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