Hi Sergey,
If you increase the logging level to "GEOSERVER_TOOLS", then when you look
in the logs after making a request it will show you a complete list of all
the stuff GeoServer has done during the request including the timings it
happened at. If you post that to this list (or to pastebin with a link) we
should be able to get an idea what GeoServer is waiting on for the 60second
render times.
I did something similar and discovered it's the database lagging my system
down.
Regards,
Jonathan
On 4 December 2013 08:11, Пашинский Сергей <[email protected]> wrote:
> Hi!
>
> I am using GeoServer 2.4.2 on Windows Server 2003 x64. I have strangeness
> with performance.
>
> Firstly is performance itself. For example, it is takes about a minute for
> my GeoServer to render 800x600 tiled map on each zooming or panning without
> any other requests. I am using map client based on OpenLayes. The layer is
> a topographic mosaic stored in ArcSDE (MSSQL Server). Tiles are 256x256.
> I have following java tuning parameters:
> -Xms2048m -Xmx2048m
> -XX:MaxPermSize=512M
> -XX:PermSize=512M
> -XX:NewRatio=2
> -XX:SoftRefLRUPolicyMSPerMB=36000
> My system configuration is:
> Software:
> Windows Server 2003 x64;
> JRE 7 with latest update;
> Hardware:
> CPU: 2 Intel Xeon E5335 (8 cores summary, 2 GHz each)
> Memory: 8GB
>
> Secondly, no matter how many requests are , the GeoServer uses mostly 2
> halves of 8 cores or about 17-20 percent of CPU.
> There are CPU load examples:
> 1 user requests tiled map
> http://s27.postimg.org/gv38mus1v/1_user_tiled.jpg
> 4 users request different tiled maps
> http://s24.postimg.org/4irrc98xh/4_users_tiled.jpg
> 8 users request different tiled maps
> http://s24.postimg.org/l9351l7cl/8_users_tiled.jpg
>
> And thirdly, the processes which load CPU are strange.
> Just look at this http://s8.postimg.org/f7ihdmvph/processes.jpg
> First 3 processes (csrss.exe, wrapper.exe and java.exe) make most part of
> CPU load. What are doing wrapper.exe and java.exe I can understand, but
> what is doing csrss.exe? Why while GeoServer processes requests, the
> csrss.exe is making most part of CPU load? When system idle, csrss.exe
> does not load CPU, only when the GeoServer processes requests.
>
> Somebody explain me please, why this all happens, and what I should do to
> increase my GeoServer performance and resource usage.
> Your help will be very much appreciated.
>
> Sergey.
>
>
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