From owner-freebsd-hackers  Wed Mar 29  2: 6:18 2000
Delivered-To: freebsd-hackers@freebsd.org
Received: from vali.uas.alaska.edu (vali.uas.alaska.edu [137.229.150.18])
	by hub.freebsd.org (Postfix) with SMTP id C421B37BDC3
	for <freebsd-hackers@FreeBSD.ORG>; Wed, 29 Mar 2000 02:06:13 -0800 (PST)
	(envelope-from russ.pagenkopf@uas.alaska.edu)
Received: from 145-pm1.jdc.alaska.net [209.112.136.145]
	(HELO uas.alaska.edu)
	by vali.uas.alaska.edu (AltaVista Mail V2.0r/2.0r BL25r listener)
	id 0000_0070_38e1_d585_2f1c;
	Wed, 29 Mar 2000 01:05:57 -0900
Message-ID: <38E1D648.B691FC8D@uas.alaska.edu>
Date: Wed, 29 Mar 2000 01:09:21 -0900
From: Russ Pagenkopf <russ.pagenkopf@uas.alaska.edu>
Reply-To: jnrp@uas.alaska.edu
X-Mailer: Mozilla 4.7 (Macintosh; I; PPC)
X-Accept-Language: en
MIME-Version: 1.0
To: freebsd-hackers@FreeBSD.ORG
Subject: Killing threads
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Can anyone coment on the below with authority? I'm learning a bit about
threads and I'm curious what the answer is.

Thanks,
rus
---

"Vladimir Butenko, Stalker Software, Inc." wrote:
>>Stefan Seiz <TalkLists@index-s.de> wrote:
[snip]
>>To have it kill unneeded threads?
> 
> It will kill "excessive" threads. AFAIR, it will start to kill if the
> unemployment level is more then 1/3: if a thread finishes a job and the number
> of unemployed threads waiting for a job is more than 1/3 of the Max number of
> threads(channels) allowed for that service, the thread is not placed into the
> wating pool, but is killed instead.
> 
>>Is this recommended?
> 
> That depends on OS. Killing threads is a dark area in many thread
> implementations. We know that it is safe on Windows, Solaris, and looks like
> safe on MacOSX. On other platforms - use on your own risk.


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message