[Mono-list] Performance benchmark
james at mansionfamily.plus.com
Sat Feb 27 18:43:02 EST 2010
Rodrigo Kumpera wrote:
> The differences are in areas such as synchronization and thread-local
> We can generate more efficient thread-local access code on linux than
> on windows,
> for example.
Well, aside from whether it is necessary for the majority of allocations
synchronisation in a modern VM (which I doubt) I think there is little
why TLS should be materially slower - it doesn't have to use the raw OS
and can use something closer to what the compilers do with compiler TLS,
> Memory allocation and call into native/runtime functions both require
> fast thread local access.
> So a lot of under the hood code that the runtime needs to generate is
> faster under linux.
Sure, but the code we were shown shouldn't be doing native calls, and
Mono has thread
local allocator support - and that certainly doesn't have problems for
the JVM on
Windows. Smells wrong to me.
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