Linux 2.6 And Hyper-Threading

David Peters writes "2CPU.com has posted an article on Hyper-Threading performance in Linux. They use Gentoo 1.4 and kernel 2.6.2 and run through several server-oriented benchmarks like Apache, MySQL and even Java server performance with Blackdown 1.4. The hardware they use in the tests is border-line ridiculous (3.2GHz Xeons, 3.2GHz P4 and P4 Prescott) and the results are actually quite interesting. It's a good read as he even takes the time to detail his system configuration all the way down to the CFLAGS used while compiling the software."

Comments

Cute comment on compiling

[MerlynEmrys67]

Of course my opinion is why not use as large of a -j as you can, and distribute the problem. Take a server farm and turn your compile into ccache and distcc (look up the projects on samba.org CCache distcc)

The first one performs semi-miracles on repetative build times where you aren't doing "incremental" builds. The second lets you distribute your compile to multiple build servers on the network (beware - there be deamons here)

Build times went from hours to minutes - it was great

Re:License software based on # of CPUs

[kayen_telva]

actually, Intel recommends against using HyperThreading with Win2K (all flavors)

Intel.com

it will run but performance sucks