Re: kern/53124 (FFS is slow because pmap_update doesn't scale)

[Andrew Doran <ad%netbsd.org@localhost>]

The following reply was made to PR kern/53124; it has been noted by GNATS.

From: Andrew Doran <ad%netbsd.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/53124 (FFS is slow because pmap_update doesn't scale)
Date: Mon, 13 Jan 2020 19:30:27 +0000

 I'm looking into fixing the issues with ubc_direct, and trying to figure out
 what to do with ACPI low power idle.  That said due to a recent reduction in
 the cost of TLB shootdowns on x86 this should noticeably improved in
 -current, especially if you use drvctl to detach all "acpicpu" which turns
 off ACPI idle.
 
 Andrew