"Chen, Kenneth W" <[EMAIL PROTECTED]> wrote: > > > Did you generate a kernel profile? > > Top 40 kernel hot functions, percentage is normalized to kernel utilization. > > _spin_unlock_irqrestore 23.54% > _spin_unlock_irq 19.27%
Cripes. Is that with CONFIG_PREEMPT? If so, and if you disable CONFIG_PREEMPT, this cost should be accounting the the spin_unlock() caller and we can see who the culprit is. Perhaps dio->bio_lock. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
