Messages in this thread | | | From | Mikael Pettersson <> | Date | Mon, 25 Oct 1999 15:10:01 +0200 (MET DST) | Subject | Re: [Announce] version 0.7 of x86 performance counters patch |
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David Weinehall writes: > On Mon, 25 Oct 1999, Mikael Pettersson wrote: > > > I have released a new version of my x86 performance-monitoring > > counters patch for Linux. From the README: > > [snip] > > Are you planning to submit this to Linus in the near future?
Didn't Linus proclaim a feature freeze for 2.3.x/2.4x?
Besides, I really need to implement lazy reprogramming of the performance counter control registers first. My initial design assumed that using WRMSR to initialize a performance counter or control register wasn't going to be too expensive. Unfortunately, it is; it takes about 231 cycles on a 500MHz K7 and 115 cycles on a 450MHz Pentium III.
Once this is done I'll submit it to Linus.
/ Mikael
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