"psradm -i" stops a CPU from handling device interrupts, but it may still take low level interrupts, such as those generated from CPU cross calls. For example, the latter are generated to force TLB shootdowns when a page is unmapped. Note that in the third mpstat period, CPU 1 shows 46 xcal's, and CPU 0 shows 48 interrupts.
- Steve Lieting Yu wrote: > I tried to turn interrupt off on one of the two CPU's. I do see a huge > reducation in the number of interrupt. However, shouldn't the number of > interrupt be 0 ? > > $ psrinfo > 0 [b]no-intr[/b] since 04/29/2008 15:28:10 > 1 on-line since 04/29/2008 13:53:51 > > $ mpstat 1 > CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl > 0 0 0 0 [b]4[/b] 0 2 0 0 0 0 0 0 0 > 0 100 > 1 8 0 1 361 259 177 0 0 0 0 130 0 1 0 99 > CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl > 0 0 0 0 [b] 2[/b] 0 0 0 0 0 0 0 0 0 > 0 100 > 1 0 0 0 366 262 181 0 0 0 0 136 0 0 0 100 > CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl > 0 0 0 0 [b]48[/b] 0 0 0 0 0 0 0 0 0 > 0 100 > 1 9 0 46 365 262 193 3 0 1 0 373 1 0 0 99 > CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl > 0 0 0 0 [b]2[/b] 0 0 0 0 0 0 0 0 0 > 0 100 > 1 0 0 0 352 250 164 0 0 0 0 115 0 0 0 100 > > > This message posted from opensolaris.org > _______________________________________________ > perf-discuss mailing list > [email protected] _______________________________________________ perf-discuss mailing list [email protected]
