Interesting article about achieving sub-msec response times by "dedicating" one of the CPUs of a SMP box to high priority tasks using a CPU shielding method.
http://www.linuxdevices.com/articles/AT8610061752.html Unfortunately most of us have only single CPU boxes which means that we rely on the performance of the low latency / preemptive patches. According to Jussi L. the 2.4 patches seem currently having problems with ext3 writes (journaling) but ReiserFS seems ok. Jussi told me too that it seems that RedHat 8.0 does something nasty because he got bad latencies on that distro (2.4+his -jl improved lowlat patch). Any news on that front ? What worries me is Red Hat 8.0 since it will become a pretty popular distro soon because it is targeted for the desktop. This means soon we will have user complaining why their systems cannot deliver solid sub-3msec latency. Hopefully ext3 and other issues get fixed soon. cheers, Benno -- http://linuxsampler.sourceforge.net Building a professional grade software sampler for Linux. Please help us designing and developing it.
