Date: Tue, 01 Dec 2009 08:01:19 +0200 From: Alexander Motin <mav@FreeBSD.org> To: David Naylor <naylor.b.david@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: FreeBSD 8.0 Performance (at Phoronix) Message-ID: <4B14B12F.9070802@FreeBSD.org> In-Reply-To: <1259583785.00188655.1259572802@10.7.7.3> References: <1259583785.00188655.1259572802@10.7.7.3>
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David Naylor wrote: > Phoronix recently published a comparative benchmark[1] for FreeBSD 7.2/8.0 > against Linux and OpenSolaris. I would like to bring some of the good and bad > to light (in the hopes that the developers with the correct expertise will be > intrigued). > > The tests were performed with a 'standard' installation of FreeBSD on a Lenovo > ThinkPad T61. > > I've tried to eliminate tests who's performance is a result of compiler > differences and/or 3rd party applications and tests who's statistical > significance are not so strong (subjective guess). > > Improvements for FreeBSD 8.0 vs 7.2: > - 7-Zip Compression (page 3) > - Timed MAFFT Alignment (page 5) > - GraphicsMagick (page 5) > - Threaded IO (64MB Random Write - 32 threads) (page 7) > - Threaded IO (64MB Read - 32 threads) (page 7) > > Regressions for FreeBSD 8.0 vs 7.2: > - Gzip compressions of a 2GB file (page 3) > - C-Ray (page 4) > - Threaded IO (64MB Write - 4 threads) (page 7) > - Threaded IO (64MB Write - 32 threads) (page 7) > > Poor performance relative to Linux and OpenSolaris > - Threaded IO (especially random writes) (page 7) > - OpenSSL (RSA 4096bit) (page 8) > - PostMark (disk transaction) (page 8) > > It appears that threaded activity on UFS does not fair well against Linux/ext4 > and OpenSolaris/ZFS. Phoronix intends to do a comparative test against > FreeBSD and OpenSolaris on ZFS. Threaded I/O activity could get much benefit from NCQ-aware disk driver. It is not included in default FreeBSD kernel, but it would be nice to compare. In power-consumption tests I believe FreeBSD could behave much better if properly tuned. Unluckily our default installation doesn't use any power-saving technologies. Six month ago I have shown on list how laptop power consumption can be cut in half. -- Alexander Motin
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