2.6.22+, CONFIG_NO_HZ=n, but irq/s looks like NO_HZ=y


can't find many references on this one, so posting here...

CONFIG_NO_HZ=n, but vmstat output shows int/sec which looks like a dynticks setup.

vmstat lies?

vmstat needs an update?

-benjamin



root@blahblah /usr/src/linux # uname -a
Linux blahblah 2.6.23.1 #2 SMP Sun Oct 14 23:40:05 EDT 2007 i686 Dual Core AMD Opteron(tm) Processor 185 AuthenticAMD GNU/Linux

root@blahblah /usr/src/linux # zcat /proc/config.gz | grep HZ
# CONFIG_NO_HZ is not set
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100

root@blahblah /usr/src/linux # vmstat 1
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
3 0 0 265492 85576 105432 0 0 45 153 26 230 24 28 47 1
0 0 0 265480 85576 105432 0 0 0 0 6 52 0 0 100 0
0 0 0 264976 85576 105432 0 0 0 0 9 65 1 3 96 0
0 0 0 265876 85576 105432 0 0 0 0 10 65 1 2 97 0

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/