At 12:10 AM -0500 2/6/02, Garance A Drosihn wrote: >One simple test I tried was that I have a copy of the freebsd cvs >repository in /usr/cvs/free, on it's own partition. Each system >has it's own /usr/src, of course. I cvsup'ed /usr/cvs/free, and >then did a > time cvs status >/dev/null >in each /usr/src, on each system.
The popular vote fingered the WITNESS option as the culprit for the significant slowdown I noticed in -current. I compiled a kernel which did nothing but turn that off, and here is an updated chart of my simple-minded benchmark: On current On current On stable +witness NO witness (no witness) ---------- ---------- ---------- real 7m 43.392s 5m 9.443s 4m 53.100s in the /usr/src user 0m 11.692s 0m 11.223s 0m 4.203s for current sys 3m 4.601s 0m 17.353s 0m 2.248s real 6m 40.322s 1m 57.438s 2m 39.361s in the /usr/src user 0m 10.531s 0m 9.474s 0m 6.653s for stable sys 4m 28.863s 0m 12.527s 0m 9.480s So, things are quite reasonable for my purposes if I turn off the WITNESS kernel option, and leave all the other debugging stuff active. reminder: The above is obviously not a scientific benchmark! It was just something adequate enough to show a rough idea of the performance I was "feeling". Thanks for the pointers. Now I'll try recompiling the rest of the ports I have on my -stable system, and see if I can't keep my office machine running in -current instead of -stable... -- Garance Alistair Drosehn = [EMAIL PROTECTED] Senior Systems Programmer or [EMAIL PROTECTED] Rensselaer Polytechnic Institute or [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message