[Mono-gc-list] [Mono-dev] Mono memory problems!

David Wolinsky davidiw at ufl.edu
Wed Jul 18 09:06:32 EDT 2007


Initially 45 MB, 12 hours later 147 MB

Another developer has the heap-shot logs, I'll post those as soon as 
possible.

David

Alan McGovern wrote:
> Could you post up the detailed stats from heapshot? After the 12 hour 
> run, how much memory are you using? Are we talking in the gigabyte 
> range, or megabyte range?
>
> Alan.
>
> On 7/18/07, *David Wolinsky* <davidiw at ufl.edu 
> <mailto:davidiw at ufl.edu>> wrote:
>
>     My lab works on a peer-to-peer network overlay and we've noticed
>     recently significant memory issues.  Some background...
>
>     This application is constantly creating new objects and shortly
>     thereafter deleting (removing reference to) them
>     Using a sample run with 150 threads running...
>     Mono on Linux has a growth rate of ~25 KB per second with a base
>     of 50MB
>     (y = 25K *x + 50M)
>     .NET on Windows stabilizes at 35 MB
>
>     We ran heap-shot with Linux and found that in a 12 hour period it
>     reported this...
>     start:
>     objects: 58,823
>     heap memory: 6,838,426 bytes
>
>     end:
>     objects: 59,925
>     heap memory: 6,862,336
>
>     We have run mono with GC_MAXIMUM_HEAP_SIZE and the memory size
>     (RES) got
>     significantly bigger than it.
>
>     I have searched for the Compacting GC with no luck, we would
>     really like
>     to see if it would help our problem.
>
>     The only operating system resources we're using are Sockets, but
>     we use
>     them VERY heavily!
>
>     If anyone has any suggestions, we'd be open to test out anything
>     at this
>     point!
>
>     We are leaning towards an issue in unmanaged memory and possibly a bug
>     in mono.
>
>     Best regards,
>     David
>
>
>     ps, I fwded this to gc and devel list because gc list looks quite
>     dead.... sorry for the duplication
>     _______________________________________________
>     Mono-devel-list mailing list
>     Mono-devel-list at lists.ximian.com
>     <mailto:Mono-devel-list at lists.ximian.com>
>     http://lists.ximian.com/mailman/listinfo/mono-devel-list
>
>



More information about the Mono-gc-list mailing list