Re: jemalloc paper/slides available

Attila Nagy wrote:
> On 2006. 05. 18. 19:19, Jason Evans wrote:
> 
>> The paper and slides for jemalloc that I presented at BSDcan 2006 are 
>> available at:
>>     http://people.freebsd.org/~jasone/jemalloc/bsdcan2006/
>> If you read only one or the other, choose the paper.
> 
> Thank you. Here is a quick comparison (the article is in hungarian) on a 
> Sun T2000 with Solaris and Linux and an Intel dual core low voltage Xeon 
> (Sossaman, Core Duo as a server processor):
> http://hup.hu/node/25322
> 
> I've lost the results for FreeBSD 6 for different blocksizes, so only 
> 1kB is on the picture, which contains all OSs. With 1MB, you can see 
> only Solaris and Linux on the same machine, besides FreeBSD -CURRENT.
> 
> Do you have any ideas about the sudden drop after 16 threads? (the 
> machine had four cores)

I doubt this is an issue for the benchmark, but it's possible that the 
default of 16 arenas (on a 4-CPU system) is causing the dropoff.  You 
can test this by setting MALLOC_OPTIONS=N in the environment (each N 
doubles the number of arenas).

Jason