Re: kern/56414: cmake hang on kqueue (condvar waiter list issue) ?

[Thomas Klausner <wiz%NetBSD.org@localhost>]

The following reply was made to PR kern/56414; it has been noted by GNATS.

From: Thomas Klausner <wiz%NetBSD.org@localhost>
To: NetBSD bugtracking <gnats-bugs%NetBSD.org@localhost>
Cc: 
Subject: Re: kern/56414: cmake hang on kqueue (condvar waiter list issue) ?
Date: Wed, 13 Apr 2022 01:42:30 +0200

 On Sat, Apr 09, 2022 at 08:35:10PM +0000, Taylor R Campbell wrote:
 > Does this still manifest on HEAD?  Do you have a machine running a
 > current kernel where you've seen the cmake hang?  Can you run this
 > program on it and see if it fails?
 > 
 > Adjust N to be the (even) number of CPUs you have.  It'll check for
 > progress every second and raise SIGABRT if not -- you can run it under
 > gdb to catch the SIGABRT or examine the core dump later if you like.
 > 
 > Took about an hour to wedge the first time on my 12-core/24-thread
 > Sandy Bridge system (but that's running netbsd-9 and everything
 > changed with pthread_cond.c in HEAD so it's not as useful as I hoped).
 
 I had this running for days in gdb on a machine where I see
 guile(often)/cmake(rare)/cargo(rare) hangs, but it didn't fail.
 
 A bulk build with guile30 had a guile hang during the same time.
 
 That was on 9.99.96/amd64 from March 29.
  Thomas