With 1800 interfaces in the system Freebsd seems to use about 50Mhz of cpu
when idle in "interrupts" even when there are no interrupts to process. on
a 500Mhz box it uses 10% of the cpu and it seems linear with different
speed processors.
the 1800 interfaces are 900 DLCIs on a T3 frame with 900 bridge groups
(rather common for a DSL delivered via Frame). This with just one
line...the same problem could occur with say 8 T1 lines with 100+ DLCIs on
each.
It seems that there is substantial overhead just scanning interfaces for
some routine maintenance...is there any hope of alleviating this deboggle?
Dennis
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