Re: CURRENT Kernel makes the system run very very hot

From: Poul-Henning Kamp <phk_at_phk.freebsd.dk>
Date: Mon, 10 Dec 2007 20:56:33 +0000
In message <20071210201106.GB90158_at_cons.org>, Martin Cracauer writes:

I installed this on my laptop yesterday:

	FreeBSD critter.freebsd.dk 8.0-CURRENT FreeBSD 8.0-CURRENT
	#0: Sun Dec  9 10:41:25 UTC 2007
	root_at_critter.freebsd.dk:/usr/obj/freebsd/src/sys/C5  i386

And it does indeed look like the idle threads do not HLT the cpu.

Interestingly, powerd(8) does the right thing and throttles down
the cpu clock even though the idle threads churn away.

top -HS shows:

  PID USERNAME   PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
   10 root       171 ki31     0K    16K CPU1   1  25.2H 100.00% {idle: cpu1}
   10 root       171 ki31     0K    16K RUN    0  25.2H 95.36% {idle: cpu0}
  928 phk         45    0   319M 68624K *Giant 0  42:46  0.98% Xorg
28654 phk         44    0  3540K  1552K CPU1   0   0:01  0.98% top
  982 phk         44    0  6500K  3940K select 1  11:03  0.29% xterm
   11 root       -24    -     0K   112K WAIT   1  19:49  0.00% {swi6: task queu

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk_at_FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
Received on Mon Dec 10 2007 - 20:25:32 UTC

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