Date: Sat, 1 Aug 2009 23:15:09 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Hans Petter Selasky <hselasky@c2i.net> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, Alfred Perlstein <alfred@freebsd.org>, src-committers@freebsd.org, Navdeep Parhar <nparhar@gmail.com> Subject: Re: svn commit: r195960 - in head/sys/dev/usb: . controller input Message-ID: <alpine.BSF.2.00.0908012313500.1507@fledge.watson.org> In-Reply-To: <200908010615.02972.hselasky@c2i.net> References: <200907300014.n6U0EZ77086341@svn.freebsd.org> <d04e16b70907310045y635245efob33b10464c22524f@mail.gmail.com> <20090731212140.GK47463@elvis.mu.org> <200908010615.02972.hselasky@c2i.net>
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On Sat, 1 Aug 2009, Hans Petter Selasky wrote: >>> This has slowed down core dumps very significantly. What used to take >>> 10-15s on my system now takes around 3 minutes. A simple test is to break >>> into ddb and "call doadump" with or without this rev. I have a serial >>> console on this machine and so I can use ddb whether the attached USB >>> keyboard works or not. > > It's because there is a DELAY(1000) in the UKBD's polling routine so that > key- repeating will work, no magic. Given a choice between dumping 10x faster and having automatic key repeat in DDB, I'd lean towards the former. :-) Robert N M Watson Computer Laboratory University of Cambridge
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