On Thu, Aug 14, 2003 at 12:17:52PM +0300, Sirotkin, Alexander wrote: > > I suspect that what happens is as follows : > > system call arrives and while it's being processed and interrupt to one > of the drivers arrives. This interrupt > schedules a tasklet which however is not executed after the system call > finishes, The tasklet should be executed at the return of interrupt handling. If not, there is a bug. > only after the next timer > interrupt which causes up to 10 ms latency (not all the time, only when > somebody makes a system call). > BTW, make sure tasklet_schedule() is indeed called in an interrupt handler. I am not sure why will happen otherwise. If you suspect it is a bug, you can easily trace them. You may my little tracing tool useful, http://linux.junsun.net/patches/generic/experimental/030716.a-jstrace.patch Jun
