Date: Tue, 10 Oct 2000 12:03:25 +0930 From: Greg Lehey <grog@lemis.com> To: John Baldwin <jhb@FreeBSD.ORG>, Chuck Paterson <cp@bsdi.com> Cc: smp@FreeBSD.ORG, Bob Bishop <rb@gid.co.uk> Subject: Re: Options with SMPng Message-ID: <20001010120325.H87663@wantadilla.lemis.com> In-Reply-To: <20001010113737.B87663@wantadilla.lemis.com>; from grog@lemis.com on Tue, Oct 10, 2000 at 11:37:37AM %2B0930 References: <20001010113737.B87663@wantadilla.lemis.com> <200010100225.UAA11314@berserker.bsdi.com> <200010091340.HAA06839@berserker.bsdi.com> <200010091639.JAA03990@john.baldwin.cx> <20001010113737.B87663@wantadilla.lemis.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tuesday, 10 October 2000 at 11:37:37 +0930, Greg Lehey wrote: > On Monday, 9 October 2000 at 9:39:43 -0700, John Baldwin wrote: >> >> On 09-Oct-00 Chuck Paterson wrote: >>> I think we ought to dump the KTR_EXTEND stuff. This makes >>> the kernel run soo slow that it isn't really usable. Without >>> KTR_EXTEND the penalty is minor. >> >> Hmm, well, combined with my ktr-verbose hack, KTR_EXTEND's ability >> to print out a useful string directly has proved useful for tracking >> down bugs with interrupts disabled, or when, for example, PCI interrupts >> are firing too fast for any work to be done because the source wasn't >> being quieted on the alpha. > > Agreed. Nobody's pretending that the KTR_EXTEND is useful in a > general-purpose kernel, but it makes a lot of difference when > developing. I don't see any good reason to dump it. On Monday, 9 October 2000 at 20:25:00 -0600, Chuck Paterson wrote: > > I realize that the implementation may currently cause > this, but isn't the ktr_verbose really orthogonal to KTR_EXTEND. I'm not sure I understand the reference here. > Perhaps my problem with KTR_EXTEND can be fixed by > comments. There have been people trying to run with this because > they thought this was the needed to get useful tracing. Ah, that's a misunderstanding, of course. I'll take a look at the docco. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20001010120325.H87663>