Re: Fixing excessive shootdowns during FFS read (kern/53124) on x86 - emap, direct map

hi, sorry for being so late to the party on this thread, I should have replied long ago. On Fri, May 11, 2018 at 05:28:18PM +0200, Jaromr Dole?ek wrote: > I've modified the uvm_bio.c code to use direct map for amd64. Change > seems to be stable, I've also run 'build.sh tools' to test out the >

Re: Fixing excessive shootdowns during FFS read (kern/53124) on x86 - emap, direct map

2018-05-12 7:07 GMT+02:00 Michael van Elst : > On Fri, May 11, 2018 at 05:28:18PM +0200, Jaromír Dole?ek wrote: >> I've implemented a tweak to read-ahead code to skip the full >> read-ahead if last page of the range is already in cache, this >> improved things a lot: > > That