Yeah, I've heard the same thing. If your system is cpu bound then I'd
bet the difference between enabled and disabled is minimal (regardless
if the difference is faster or slower). 20% either way is not very much.
If your not cpu bound, I'd bet you see no difference at all.
Of course, these are hugely big guesses. And probably wrong. I dont
have any numbers to share. Sorry.
-Andy
On 2/8/2010 2:48 PM, Mark Volz wrote:
Andy,
To be more specific:
I am using GeoMoose. GeoMoose draws each layer separately so we do benefit
by having a multi-core processor even if there is only one user. We also are
using a WMS Service so air photos is for the most part a non issue. If my
understanding is correct hyper-threading has up to a 20 percent increase in
speed. However, the performance increase is highly application specific and
in some cases performance may actually be lower with Hyper-Threading enabled.
Mark Volz
GIS Specialist
Lyon County, MN
-----Original Message-----
From: Andy Colson [mailto:a...@squeakycode.net]
Sent: Monday, February 08, 2010 2:30 PM
To: Mark Volz
Cc: mapserver-users@lists.osgeo.org
Subject: Re: [mapserver-users] hyper-threading and performance
On 2/8/2010 2:20 PM, Mark Volz wrote:
Hello,
Does anyone know if the performance of Mapserver is increased if
hyper-threading is enabled? If so how much?
Mark Volz
GIS Specialist
Lyon County, MN
Hey Mark,
What sort of usage are we talking? Web hosting? Shapefiles and arials?
I'm not sure if mapserver itself will use mult-threads, but if you
have multiple requests comming into a website, apache/cgi/mapserver/etc
will use multi process/threads/etc.
Its tough to say the performance increase. I'm host several maps on a
dual-core box, and the cpu's sit around 2 percent. And with lots of
arial imagery you might hit disk io limit before you hit cpu limit.
(However, I have had some mrsid files that were really cpu intensive to
uncompress, they were cpu bound). Are your cpu's even pegged?
So, I guess, the answer is, it really depends on a lot of different
variables.
-Andy
_______________________________________________
mapserver-users mailing list
mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
