TSC Timer "Quality" ?
Björn König
bkoenig at cs.tu-berlin.de
Fri Oct 14 12:18:11 PDT 2005
Peter B schrieb:
Intel pentium cpu timer tsc:
'Timecounter "TSC" frequency X Hz quality Y' (from dmesg)
What is the definition of "quality" ..?
I have looked briefly in the /usr/src/sys/i386/i386/tsc.c sourcefile and
the intel-celeron datasheet. Without finding anything useful.
From src/sys/sys/timetc.h:
54 int tc_quality;
55 /*
56 * Used to determine if this timecounter is
better than
57 * another timecounter higher means better.
Negative
58 * means "only use at explicit request".
59 */
As far as I understand this, it is used internally only.
Regards
Björn
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