Re: kern/55022: pgdaemon busy loops

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

The following reply was made to PR kern/55022; it has been noted by GNATS.

From: Andrew Doran <ad%netbsd.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
	netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/55022: pgdaemon busy loops
Date: Wed, 26 Feb 2020 21:51:48 +0000

 There's memory and KVA to be reclaimed there.
 
 I suspect this likely has the same root cause as the following, which all
 exhibit the same symptoms (although the 9.0_RC1 has the added complication
 of severe lock pressure in 9.0 and earlier, which is solved in -current):
 
 PR kern/54818: 9.0_RC1 pagedaemon spins
 PR misc/54886: i386 testbed hangs running ATF tests
 PR kern/54908: kernel semi-lock-up
 PR port-amd64/54988: system freezes shortly after physical memory is exhausted.
 
 Andrew