Re: CVS commit: src/sys

[Jaromír Doleček <jaromir.dolecek%gmail.com@localhost>]

2018-05-22 12:18 GMT+02:00 Martin Husemann <martin%duskware.de@localhost>:
> Here are timing results:

While 37% speedup is nice, I see there isn't nearly as huge difference
as for my machine. Could you please try with some file which fits
whole in the page cache?

> Unfortunatley with ubc_direct enabled, it panics quickly:

There is a comment in uvm_bio.c about some platforms not being able to
write to individual bytes atomically, and hence software having to do
read/modify/write. Could this be  somehow causing the machine check on
Alpha?

Jaromir