re: kern/56329: nvme(4) takes long time to umount

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR kern/56329; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
    netbsd-bugs%netbsd.org@localhost, paul%whooppee.com@localhost
Subject: re: kern/56329: nvme(4) takes long time to umount
Date: Sun, 01 May 2022 14:57:18 +1000

 >  To me this doesn't look like a regression and recycling ~570000 vnodes
 >  per second looks ok.
 
 it definiately feels like it got slower sometime in the last
 6mo-2 years.  it sure didn't take 10s of seconds to reboot
 because unmounting root took so long before:
 
 [ 2943701.7107086] unmounting 0xffff00000065b000 / (/dev/ld4a)...
 [ 2943725.4316875] unmounting done
 
 this was just now, on a system up ~34 days.
 
 
 i'll see if i can reproduce this on a system with both netbsd-9
 and -current installed.
 
 
 .mrg.