Messages in this thread | | | From | Andreas Schwab <> | Subject | Re: Reading /proc/stat is slooow | Date | Tue, 06 Dec 2005 18:10:40 +0100 |
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"Luck, Tony" <tony.luck@intel.com> writes:
> 2) The problem loop is already #ifdef'd out for PPC64 and ALPHA. We could add > IA64 to that exclusive club and just not include the per irq sums. Since kstat_irqs() > computes the sums in an "int", they will wrap frequently on a large system > (512 cpus * default 250Hz = 128000 ... which wraps a 32-bit unsigned in 9 hours > and 19 minutes) ... so their usefulness is questionable. Does xosview use > the per-irq values?
It doesn't use them, it uses /proc/interrupts instead. So IMHO this would be the preferred solution.
Andreas.
-- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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