Brian Pane wrote: > > Greg Ames wrote: > > >Jeff & I discussed how to troubleshoot this baby. Some thoughts: > >* compare trusses and look for abnormalities > >* scrutinize the error logs > >* calculate and log how much CPU time each request takes, the thought > >being that some requests are burning a lot more CPU than they used to. > > > >Any other ideas? > > > > One more thought: I graphed the CPU utilization from your vmstat > output, and the spike is mostly sys time, not usr. So truss/strace > data may be helpful--especially if truss on that platform can measure > the time spent in each syscall.
truss doesn't measure time on FreeBSD according to the man page. But maybe there are a lot more syscalls in the failing case, so I'll try it. Greg
