From owner-freebsd-hackers Sun May 19 19:58:30 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id TAA19657 for hackers-outgoing; Sun, 19 May 1996 19:58:30 -0700 (PDT) Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.19]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id TAA19650 for ; Sun, 19 May 1996 19:58:26 -0700 (PDT) Received: (from bde@localhost) by godzilla.zeta.org.au (8.6.12/8.6.9) id MAA00774; Mon, 20 May 1996 12:54:29 +1000 Date: Mon, 20 May 1996 12:54:29 +1000 From: Bruce Evans Message-Id: <199605200254.MAA00774@godzilla.zeta.org.au> To: coredump@nervosa.com, taob@io.org Subject: Re: Slow tty updates and high load, but idle CPU Cc: freebsd-hackers@FreeBSD.ORG Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk >all at once, or in round-robin fashion. However, all experience the >one-second delay between updates. A stuck select() somewhere, perhaps? ttwrite() is probably sleeping on lbolt. This should be easy to check by looking at the sleep address in ps output. ttwrite() sleeps on lbolt when the system runs out of clists. clists may run out because they are broken as designed or because of a bug that was fixed in -current on 1995/12/15 and in -stable on 1996/01/03. Bruce