On 2020/03/13 17:44, Martin wrote: > Description > > After heavy disk loads (copying large files, dd urandom data to a disk) > especially USB3.0 attached. OpenBSD 6.6-current stutters every 1-3s even > after copying is completed till next reboot. Disk was encrypted by bioctl > with -r64 option. It looks like system wide disk I/O problem, maybe USB > related. > > How to reproduce > > Connect external HDD and dd if=/dev/urandom of=/dev/rsd0c bs=1M or copy large > file with some (possible heavy) CPU load by any background process. During > the urandom writing or copying a large file procedure 6.6-current stutters. > It stutters anyway even all copy operations ended, until reboot. From user's > side it looks as missed symbols during typing, any realtime traffic like VoIP > RTP interrupts every stutter. > > Some tests detail have been described here: > https://marc.info/?l=openbsd-misc&m=158403485529894&w=2 > > dmesg of affected machine has been sent to [email protected]
It's unhelpful to scatter information amongst about 5 different mails, one of which is to an address that is not visible to normal bugs@ readers (and is a pain to locate for developers). Since you mention you have tweaked -r for bioctl softraid, I bet there are other things you tweaked too. Please write everything up that you can about your configuration into a single self-contained mail. Note that USB support is not a strong point of OpenBSD.
