FreeBSD 7.1 BETA 2 vs Opensolaris vs Ubuntu performance

Ivan Voras ivoras at
Tue Nov 25 13:06:50 PST 2008

2008/11/25 Adrian Chadd <adrian at>:
> 2008/11/25 Ivan Voras <ivoras at>:
>>> I believe most of the synthetic numbers (mp3 encoding etc.) difference
>>> comes from the different version of gcc the different OS uses...
>> You're very likely right. Ubuntu 8.10 has gcc 4.3.x - it could make for
>> the small difference in gzip and 7z compression performance.
> Well, that should be a reasonably easy thing to test and feed back to
> the author.

OTOH if the goal is to measure "operating system" performance, this
must also include the compiler, libraries and all. (for example, what
does Solaris default to nowadays? I think it ships with gcc but not as
default). The hold on gcc 4.3 in FreeBSD is, after all, political

If FreeBSD base ever switches to LLVM+clang, this means libc will be
compiled with a non-gcc compiler which will forever change the
performance for simple "real world" benchmarks.

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