Hello!<br><br>I was able to verify you findings on my machine for R14B04 and R15A. The problem is however fixed (I even get a 15% throughput improvement on your bench) in our latest internal master which will be pushed to github later this evening. So if you could pull the latest from github tomorrow and verify my findings that would be great!<br>
<br>Lukas<br><br><div class="gmail_quote">On Wed, Nov 30, 2011 at 11:36 AM, Nico Kruber <span dir="ltr"><<a href="mailto:kruber@zib.de">kruber@zib.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Is it possible, that some debug option is on by default in the R15A tagged git<br>
checkout?<br>
We build the source using the following commands (on a x86_64 system with 8<br>
cores):<br>
<br>
./otp_build autoconf<br>
./configure --prefix=/home/buildbot/apps/erlang-R15A<br>
make<br>
make install<br>
<br>
and then compiled our application (<a href="http://code.google.com/p/scalaris/" target="_blank">http://code.google.com/p/scalaris/</a>) using<br>
R15A.<br>
<br>
With our internal benchmarks ("make bench") showed a drop of around 15% in<br>
performance compared to R14B04. We were actually hoping for an increased<br>
performance reading about the memory allocation improvements...<br>
<br>
Is there some switch (during configuration or build) influencing the<br>
performance?<br>
<br>
output of R14B04 erl:<br>
------------------------------------------------------------<br>
Erlang R14B04 (erts-5.8.5) [source] [64-bit] [smp:8:8] [rq:8] [async-<br>
threads:0] [hipe] [kernel-poll:false]<br>
<br>
Eshell V5.8.5 (abort with ^G)<br>
1><br>
------------------------------------------------------------<br>
<br>
output of R15A erl:<br>
------------------------------------------------------------<br>
Erlang R15A (erts-5.9.pre) [source] [64-bit] [smp:8:8] [rq:8] [async-<br>
threads:0] [hipe] [kernel-poll:false]<br>
<br>
Eshell V5.9.pre (abort with ^G)<br>
1><br>
------------------------------------------------------------<br>
<br>
<br>
Regards<br>
<span class="HOEnZb"><font color="#888888">Nico Kruber</font></span><br>_______________________________________________<br>
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<br></blockquote></div><br>