On Thu, 2012-09-06 at 10:53 -0700, Paul E. McKenney wrote: > > - how do I know if my workload wants a longer or shorter forced qs > > period? > > Almost everyone can do just fine with the defaults. If you have more > than about 1,000 CPUs, you might need a longer period.
Because the cost of starting a grace period is on the same order (or larger) in cost as this period? > Some embedded > systems might need a shorter period -- the only specific example I know > of is network diagnostic equipment running wireshark, which starts up > slowly due to grace-period length. But but but 3 jiffies.. however is that too long? > > Also, whatever made you want to provide this 'feature' in the first > > place? > > Complaints from the two groups called out above. Does this really warrant a boot time knob for which even you cannot quite explain what values to use when? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
