trouble with HT
kris at obsecurity.org
Wed Apr 4 00:57:23 UTC 2007
On Tue, Apr 03, 2007 at 07:45:55PM -0500, Jonathan Horne wrote:
> building a new system, processor is:
> CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2793.20-MHz 686-class CPU)
> Origin = "GenuineIntel" Id = 0xf29 Stepping = 9
> and the chipset is Intel 865G. in 6.2, the old method of enabling HT with sysctl.conf seems to be depricated, as i got a nastygram from dmesg that im a dummy on boot up (so i took those back out). then i read thru some docs, and apparently, HT is supposed to be enabled in the base release now.
> strange part is, for a while, 'top -C' would show me the C column, and i actually could see some 0's and 1's, so i went about my business of building ports. now that i go back, the -C is no longer being obeyed, and i cant get the C column to appear.
That suggests you may have rebuilt your kernel without SMP support.
> how can i verify that HT is working? my mobo (IBM 8189) doesnt seem to have an on/off for HT, so my first inclenation is assume that its on (we have many windows machines running on this hardware, and HT never seems to be a problem with those).
> any pointers would be appreciated (and yes, already know alllll about the security advisories... :)
And about the possible poor performance I assume :)
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