Hi. I discovered high CPU0 interruptions load (amd64) in various cases. wifi (athn, urtwn): up to 100% at 2 MB/s download. Usually 50%. Grows faster then linear with net load. Sometimes system freezes for about a minute. Web speed tests consume significantly less CPU then wget/firefox/ktorrent download. I don't know why. Dmitrij D. Czarkoff has 6% interruptions load during samba download (1.3 MB/s, urtwn). I sent bug report but by now it's unreplied.
SSD write (dd if=/dev/zero of=... bs=1M): 10% unencrypted, 50% encrypted (softraid0). Disk read doesn't load cause interruptions load. USB stick dd: essentially no interruptions load (2 MB/s) 1) What interruptions load should be considered normal? I used to think even 10% is too high. I want to investigate the problem and profile interruption handlers. 2) Is there any OpenBSD kernel profiling support? High resolution clocks, tick counters.
