Re: Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-13

From: Gene Heskett
Date: Mon Nov 29 2004 - 23:55:24 EST


On Monday 29 November 2004 20:50, K.R. Foley wrote:
>Gene Heskett wrote:

>>>make that -31-13 (or later). Earlier kernels had a bug in where

[...]

>Is this all that is in the log? For some reason there are 820
> samples not represented in the output above. The ms+ hits would
> have been represented by something like:
>
>Nov 29 18:05:45 coyote kernel: 9999 4

Ok, I finally got -13 to run (typo in grub), and you are now correct
in that the final entry in the log after I shut tvtime down is like
this:

Nov 29 23:43:40 coyote kernel: rtc latency histogram of {tvtime/3911,
10430 samples}:
Nov 29 23:43:40 coyote kernel: 4 51
Nov 29 23:43:40 coyote kernel: 5 2058
Nov 29 23:43:40 coyote kernel: 6 3594
Nov 29 23:43:40 coyote kernel: 7 1270
Nov 29 23:43:40 coyote kernel: 8 473
Nov 29 23:43:40 coyote kernel: 9 299
Nov 29 23:43:40 coyote kernel: 10 252
Nov 29 23:43:40 coyote kernel: 11 209
Nov 29 23:43:40 coyote kernel: 12 215
Nov 29 23:43:40 coyote kernel: 13 345
Nov 29 23:43:40 coyote kernel: 14 391
Nov 29 23:43:40 coyote kernel: 15 248
Nov 29 23:43:40 coyote kernel: 16 113
Nov 29 23:43:40 coyote kernel: 17 55
Nov 29 23:43:40 coyote kernel: 18 17
Nov 29 23:43:40 coyote kernel: 19 11
Nov 29 23:43:40 coyote kernel: 20 4
Nov 29 23:43:40 coyote kernel: 21 1
Nov 29 23:43:40 coyote kernel: 23 2
Nov 29 23:43:40 coyote kernel: 28 1
Nov 29 23:43:40 coyote kernel: 4612 1
Nov 29 23:43:40 coyote kernel: 9999 820

What does this tell you now? The last 2 lines look a bit strange to
me. Particularly since the runtime was random enough that your
previous comment about the number 820 was a mssing count, and what
came out of a seperate run IS an 820.

I find that a bit hard to believe that I timed those two runs
identically.

--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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by Gene Heskett are:
Copyright 2004 by Maurice Eugene Heskett, all rights reserved.
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