Dual Core Linux Performance: Two Penguins are Better than One
by Kristopher Kubicki on July 1, 2005 5:55 AM EST- Posted in
- Linux
Multitasking Scenario 1: DVD Transcoding
Ripping DVDs on Linux is one of the applications Linux really does well at - if you don't mind getting past the pretty GUI of DVD Shrink or a similar application. Ripping DVDs in general is fairly common for any desktop regardless of OS, and checking mail while ripping a disc can inflict havoc sometimes. The following test attempts to mirror Anand's Windows benchmarks on Linux and is very comparable to the Windows alternatives.
- Open FireFox 1.0.4 and load all 5 web pages. We chose 5 pre-downloaded pages from various sites like AnandTech, CNN and ESPN
- Open XMMS and start playing a Nine Inch Nails CD ripped to Ogg
- Open Thunderbird for news
- Login to our news server and start downloading headers for our subscribed news groups
- Open dvd::rip
- Start backup of Star Wars Episode VI - Return of the Jedi. All default settings
Again the emphasis is not particularly whether or not one system is capable of finishing the DVD backup faster than the other, but whether or not the system is still useable while doing so. We might be pushing the load of our system a bit far - but a machine that can rip DVDs fast but can't play music at the same time is effectively useless to us. Like Anand's test, the vob files were already placed on the hard drive to eliminate the DVD drive bottleneck. We have instructed dvd::rip to reduce our vobs from 7.5GB with transcoding to 4.5GB.
Although the load from our other application is not substantial, the combination of several low intensity applications and the introduction of a maximum load application (dvd::rip) end up bringing our single core platforms to a halt. The results of this benchmark were eerily similar to Anand's Windows benchmark, and the same culprits are pretty much to blame. Even if Linux might have a leg up on Windows' scheduler, no amount of clever preempting can beat a second processor core.
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StealthyOne - Friday, July 1, 2005 - link
where is the pentium EE? :-)JGunther - Friday, July 1, 2005 - link
#4, it's 'cause Kris is writing the article. 'nuff said. ONCE AGAIN he's skewed the benchmarks by throwing the top of the line Intel dual core chip up against the entry level AMD chip. Nice job.Also, ditto on #7 and #12... way to criticize the AMD part for its price, Kris, without mentioning that the Pentium-D requires a mobo upgrade while the X2 does not.
semo - Friday, July 1, 2005 - link
#6 that's what i'm thinking.plus, i thought that with dma enabled, the cpu would not have to do too much work to burn a dvd
atlr - Friday, July 1, 2005 - link
I look forward to some database server/web server tests.appu - Friday, July 1, 2005 - link
Kris, great work! You might want to consideramaroK (http://amarok.kde.org) as an equivalent
of iTunes under Linux, or even gtkpod. XMMS is
better treated as an equivalent of Winamp 2.x.
Furen - Friday, July 1, 2005 - link
I have one question: why was the compile job on the x2 system only run with -j1? Not trying to flame you or anything, just a wondering...bob661 - Friday, July 1, 2005 - link
Kristopher Kubick,"At $558 you pay through the nose for the additional performance of the Athlon 64 X2 4200+"
That's the price for the P-D 840 not the X2 4200.
SLIM - Friday, July 1, 2005 - link
I think #7 has hit the nail on the head. One other large difference in the prices besides the memory is the extra $100+ spent on a 955x motherboard or a comparable nforce4 sli intel edition (not sure if these support dual core yet though). The price difference, as has been pointed out several time before, between the intel cpus and amd cpus is just about negated once you tack on the extra cost of the MB and memory.You could definitely choose a 945 MB and save about $100 but I have yet to see the pentium D benched on that platform, and I don't think there is an sli platform for intel that's available for under $225.
GoatHerderEd - Friday, July 1, 2005 - link
Ill stick with my K6-3 550 (=Furen - Friday, July 1, 2005 - link
haha, what a cool article name and icon =)