Messages in this thread | | | Date | Mon, 20 Dec 1999 14:55:10 -0500 | From | Peter Rival <> | Subject | Re: Lockmetering for 2.3.29 |
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Andrea Arcangeli wrote:
> [ sorry for the very late reply but I am been overloaded ] > > On Thu, 9 Dec 1999, Peter Rival wrote: > > >it (correct me if I paraphrased wrong :). If there are no violent > >objections, I'd like to change this in the base tree as soon as possible > >so that it gets as much soak time as we can before 2.4 is a reality. > > In general it's always safe and a bit more performant to remove it. > > But on alpha we don't have an NMI watchdog so it would be better to left > them enabled at least until the 2.4.x branch will take place...
Yes, but... :) If we wait until the 2.4.x branch, our opportunity to "soak" this relatively major change without production impact will have passed us by. The last thing I want to do is add performance that impacts stability in, or too close to, a "stable" kernel series. I'd like to get a few weeks or more of time with this change. I'm doing it myself in all my kernels, but I know that I'm not running anywhere near the expanse of programs and stresses on the different types of systems that the Linux community is.
> Is it > possible to generate real NMI on alpha? I think it would be possible to > use the RTC to emulate an nmi changing __cli() to raise the masking of > irqs to 6. >
Jay or Richard would be the best ones to ask, not me (yet (unfortunately) ;).
> > About the kernel debugging tools I want to make the IKD stuff running on > alpha too (as first kernel tracer and then memleak detector). kdb port > will be not trivial, I'll start hacking with: > > mv linux/arch/i386/kdb linux/ >
Kewl. I'm hoping that we can move as many of the well-liked tools that are Intel-only over to Alpha. I've started one, you're starting another, and someone else is doing the LKCD, IIRC. The snowball is growing :)
- Pete
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