With 4.5-release out the door, I thought I'd start trying to use 5.0-current on my "main freebsd machine" instead of 4.x-stable. I figure at some point we (as developers) have got to try to migrate to that release as much as possible.
I had been doing some stuff with 5.0-current at home. That seemed a bit slow, but I didn't think too much of it as the home machine is a single-CPU Duron-based machine (600 Mhz). while the machine at work is a dual-CPU Pentium-3 machine (650 MHz). The office machine also has more RAM, so obviously the home machine would be slower. But switching to current on the office machine is also considerably slower. I wasn't expecting "faster", but I'm wondering if other people are also seeing it as much slower, or if I've just got some other odd problem hitting me. 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. (that command is just for this timing test, I usually do more useful commands at that point!). On current On stable ---------- ---------- real 7m 43.392s 4m 53.100s in /usr/src for current user 0m 11.692s 0m 4.203s sys 3m 4.601s 0m 2.248s real 6m 40.322s 2m 39.361s in /usr/src for stable user 0m 10.531s 0m 6.653s sys 4m 28.863s 0m 9.480s I realize this example isn't terribly detailed, but it seems to match what I "feel" when doing any major work on current. I'm used to a 'make -j5 buildworld' taking between 42 and 45 minutes for stable on my office machine, but the few times I've rebuilt -current, it's taking more like three and a half hours. That is quite a hit. This current system was initially installed in late-december, doing a full system-install (booting off a CD, newfs'ing the partitions, etc). So, it should have picked up all the recent filesystem improvements (dirprefs, etc) when laying out the files, and even if that wasn't true this test is done using the exact same directories as source & destination for the stable vs current tests. Could it be due to the DDB, INVARIANTS & WITNESS options in the kernel? If it is that's fine with me, I'm just wondering where that magnitude of a slowdown would be coming from. Anything else I should check? I realize there's about a million differences between the two branches, and there might also be something about my machine's setup which is a major culprit here. I'm just looking for a basic idea of what other people have been seeing for performance when they run current. -- 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 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message