Geoserver Version : 2.1
We have tried -Xms1024M -Xmx1024M -XX:PermSize=256M but the behavior is the
same.
Although -Xmx1024M is set, the memory size is increased more than 1,8G (we
use "ps -e -orss=,args= | sort -b -k1,1n | pr-TW$COLUMNS" to know how much
memory every process uses ) . The remainig memory is cached by S.O but we
have clear the cache to allow JVM to use this memory.If we don't clear the
cache, messages like this appear:
"Java HotSpot(TM) 64-Bit Server VM warning: Attempt to deallocate stack
guard pages failed.
Java HotSpot(TM) 64-Bit Server VM warning: Attempt to protect stack guard
pages failed.
mmap failed for CEN and END part of zip file"
"Errores : java.io.IOException: No memory left for cache! at
javax.imageio.stream.MemoryCache.pad(MemoryCache.java:171)"
We have found others errors like : "java.lang.OutOfMemoryError: GC overhead
limit exceeded" . We have used -XX:-UseGCOverheadLimit to avoid GC working
too much
We have been testing 256x256 tiles ( stress test during 18 hours , 150
concurrent users, 2.314.321 resquests ).Total Size memory =1.3G without
OOM.Now,we are working with 850x1064 images and a lot of OOM appear.
Thanks in advance
2011/10/14 DGIS Devels <[email protected]>
> Hi,
>
> We are having lots of problems with the display of SRS reprojected image
> mosaics. Server runs out of memory after near 4000 requests, trying to
> consume even the swap memory.
>
> *Tomcat's log* file :
> ..
> ..
> mmap failed for CEN and END part of zip file
> Java HotSpot(TM) 64-Bit Server VM warning: CodeCache is full. Compiler has
> been disabled.
> Java HotSpot(TM) 64-Bit Server VM warning: Try increasing the code cache
> size using -XX:ReservedCodeCacheSize=
> Java HotSpot(TM) 64-Bit Server VM warning: Attempt to allocate stack guard
> pages failed.
>
> Java HotSpot(TM) 64-Bit Server VM warning: Attempt to allocate stack guard
> pages failed.
> Java HotSpot(TM) 64-Bit Server VM warning: Attempt to allocate stack guard
> pages failed.
> Java HotSpot(TM) 64-Bit Server VM warning: Attempt to allocate stack guard
> pages failed.
> Java HotSpot(TM) 64-Bit Server VM warning: Attempt to allocate stack guard
> pages failed.
> ....
> ...
> ....
>
>
> After this, the JVM crash ...
>
> *Server Data*:
> - Red Hat Enterprise Linux Server release 5.5 (Tikanga) 64 bits
> - tomcat 6.0.20
> - jdk 1.6_27
> - Total Memory: 3,8 GB
> - JVM Geoserver Memory: 2GB ( -Xms2048M -Xmx2048M -XX:PermSize=512M )
>
>
> Any idea? Thanks in advance.
>
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