[Mono-list] Size of thread in Mono (65MB per thread ?)

[Nicolas Antoniazzi]

I tested the new version of Mono 3.2 using the sgen GC.
I still have the same problem: every new thread uses a bit more than 64MB
or RAM on Linux. So, in my virtual environment limited to 512MB of
(virtual) RAM, it crashes (stops silently with a return code equals to 1)
when I try to create my 6th thread.

I tested the same program on Windows 7 with a MS .Net environment. I
started 1000 threads and my program only used 48MB of RAM. I did not try to
create more threads because I would have to create millions of thread to
each a problem.

I am really not doing some strange operations, just create threads in a
loop, with a pause of 1 sec between each one to let me time to see how
munch memory is consumed.
Am I the only one who encounter this strange behavior with thread of 64MB
or is it considered as normal?


Nicolas Antoniazzi
CTO - CodinGame
http://www.codingame.com
+33 (0)4 67 13 00 96


2013/12/19 "Andrés G. Aragoneses" <knocte at gmail.com>

> Try finding the limit on the MS.NET platform, to know how it dies in
> .NET as opposed to Mono.
>
> Also, try the new version 3.2.x of mono which comes with a new garbage
> collector, and post new results.
>
> On 19/12/13 15:29, Nicolas Antoniazzi wrote:
> > I installed Visual Studio in a windows virtual machine.
> >
> > On a standard .Net platform, the same program uses 16MB of memory at
> > initialization and adds approximately 20KB for each thread.
> > It looks normal to me since the main goal of threads are to be light.
> > It's like if threads were acting like a fork() for Mono.
> >
> > So, I'm still stuck with this problem at the moment :(
> >
> > 2013/12/19 Nicolas Antoniazzi <nicolas at codingame.com
> > <mailto:nicolas at codingame.com>>
> >
> >     I tried with version 2.10.8 and 3.0.6. Both leads to the same
> >     behavior. (Maybe gaining few KB with 3.0.6)
> >
> >     Unfortunately, I do not have .Net development environment to test.
> >
> >     Nicolas Antoniazzi
> >     CTO - CodinGame
> >     http://www.codingame.com <http://www.codingame.com/>
> >     +33 (0)4 67 13 00 96 <tel:%2B33%20%280%294%2067%2013%2000%2096>
> >
> >
> >     2013/12/19 "Andrés G. Aragoneses" <knocte at gmail.com
> >     <mailto:knocte at gmail.com>>
> >
> >         On 19/12/13 11:09, Nicolas Antoniazzi wrote:
> >         > Hi,
> >         >
> >         > I am using Mono in a virtualized environment with 512MB of RAM.
> >         > I made a very simple program which starts 10 threads in a loop
> and
> >         > apparently, every time that I start a new thread,
> >         approximately 65MB of
> >         > memory is used.
> >         >
> >         > In my case, I can run 5 threads, but for the 6th, the program
> >         crashes
> >         > (without any exception). 150MB are already consumed without
> >         the use of
> >         > any thread.
> >         >
> >         > Is it a normal behavior?
> >         >
> >         > Thanks!
> >
> >         What version of mono are you using?
> >
> >         Have you tried running your program under the .NET framework, to
> >         compare?
> >
> >
> >         _______________________________________________
> >         Mono-list maillist  -  Mono-list at lists.ximian.com
> >         <mailto:Mono-list at lists.ximian.com>
> >         http://lists.ximian.com/mailman/listinfo/mono-list
> >
> >
> >
> >
> >
> > _______________________________________________
> > Mono-list maillist  -  Mono-list at lists.ximian.com
> > http://lists.ximian.com/mailman/listinfo/mono-list
> >
>
>
> _______________________________________________
> Mono-list maillist  -  Mono-list at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/mono-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ximian.com/pipermail/mono-list/attachments/20131220/b10f59cd/attachment-0001.html>