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

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

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

From: =?UTF-8?B?SmFyb23DrXIgRG9sZcSNZWs=?= <jaromir.dolecek%gmail.com@localhost>
To: "gnats-bugs%NetBSD.org@localhost" <gnats-bugs%netbsd.org@localhost>
Cc: 
Subject: Re: kern/53124 (FFS is slow because pmap_update doesn't scale)
Date: Mon, 9 Apr 2018 23:43:43 +0200

 I've updated the patch once more, it's now using emap also for the
 read (fault) path, and removing the rest of the pmap_remove() calls.
 Can you please re-check with the updated patch?
 
 This is still very likely not complete and correct, the faults violate
 the emap produce/consume pattern. Nevertheless, I'd like to test
 whether/how exactly it fails for you, and if it has the desired
 performance effect.