Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 20 Mar 2003 19:07:28 +0200 | From | Matti Aarnio <> | Subject | Re: Bottleneck on /dev/null |
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On Thu, Mar 20, 2003 at 12:01:06PM -0500, Richard B. Johnson wrote: ... > Yes. That's better. It may have been a diagnostic error > in the code of the first person reporting this --also. > > The data-rate is so high that I might have wrapped several > times! I didn't think it would be that high, only 2 to 3 > gigibyte/second, not over 4 Gb/s (with 130MHz RAM no less)
Furthermore, in Linux you are really measuring syscall overhead to "/dev/null" write, which does never do memory transfers of any kind from user-space to kernel.
... > Its interesting that the data-rate is higher with the network > plugged in and getting all those M$ broadcast messages. But, as > expected, its more stable without.
Quite so.
> Cheers, > Dick Johnson
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