On Tue, Jul 03, 2007 at 03:31:49AM +0200, Martin Toft wrote: > I have run -current on my ThinkPad T41 laptop for nearly a year, and > until now it has worked really well. Recently I bought a new disk for > the machine and in connection with this I reinstalled OpenBSD using the > most recent snapshot and then updated the system to -current. Unlike > before, I now experience really bad performance. I have tried to > document this with a series of small tests. The tests are run both on > OpenBSD 4.1-current (GENERIC), checked out and built on July 1, and on > KNOPPIX (V5.0.1CD-2006-09-25-DA), booted from CD. > > If you have any suggestions for tuning the performance of my system, > please let me know. Also, if the bad performance is due to some > mistakes that I've made, please throw some bricks at me. > > You can browse the dmesgs and tests here: http://obsd.dk/bertha-tests > Direct link to OpenBSD dmesg: > http://obsd.dk/bertha-tests/dmesg.openbsd.txt > Direct link to KNOPPIX dmesg: > http://obsd.dk/bertha-tests/dmesg.knoppix.txt > > Situation: The laptop is called bertha. I have a normal PC called kaffe > that I use as remote end for the network benchmarks. The two machines > are connected through a 100 Mbps switch. > > Highlights: > 1. When scp'ing the KNOPPIX .iso from kaffe to bertha:/dev/null running > OpenBSD, the transfer rate is only 4.4 MB/s. When running KNOPPIX, > it's 9.9 MB/s. > 2. Running OpenBSD, the disk's read rate is only 8.5-8.7 MB/s. When > running KNOPPIX, it's 45-46 MB/s. > 3. The numbers from "openssl speed" when running KNOPPIX are 5-12 times > higher than the numbers from running OpenBSD. > 4. When doing a netcat TCP transfer at full speed (approx 11.6 MB/s) > from kaffe:/dev/zero to bertha:/dev/null running OpenBSD, the CPU is > only 18% idle. When running KNOPPIX, it's 77% idle. > > Martin
Include the output of 'atactl wd0' perhaps you have something like caching turned off. Also you can't hope for similiar results if you use different programs on both systems.
