> > 1. most modern day os'es cache the files, and not do a disk io for every > > single file request. (duh !!.) > > yep. Yesterday I powered up wimp for the first time in ages and did a > mini-SPECweb experimental run in preparation for fiddling with the stat() in > mod_specweb99. I got really horrible results at first and couldn't figure out > what was wrong. It turned out that I just needed to warm up the kernel's disk > cache more. The results got 50% better after an hour or so.
When our specweb guys were whacking Zeus they would first run a program that would walk the file set to try and fill up the cache. This made a big difference with Zeus, but I never saw much of a change, but then again I was shooting for a much lower specweb. Dave
