Messages in this thread | | | Date | Wed, 30 Jan 2002 11:47:56 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: TCP/IP Speed |
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On Wed, 30 Jan 2002, Zwane Mwaikambo wrote:
> On Wed, 30 Jan 2002, Richard B. Johnson wrote: > > > But it's already connected. > > > > > > host: > > for (;;) { > > gettimeofday(...); > > write(s, buf, 64); > > read(s, buf, sizeof(buffer)); > > gettimeofday(...); > > /* delay is 1.0 ms */ > > } > > server is IPPORT_ECHO > > You didn't make that explicit in your previous email, and anyway what kind > of resolution can you expect from gettimeofday... >
The resolution is in microseconds. That's the specification. Not all 'codes' are exercised of course, but the resolution is sufficient to discern a 10 to 30 microsecond difference. I'm trying to measure milliseconds, well within its capability. FYI, this is what `ping` and `traceroute` use. It's fine.
Cheers, Dick Johnson
Penguin : Linux version 2.4.1 on an i686 machine (797.90 BogoMips).
I was going to compile a list of innovations that could be attributed to Microsoft. Once I realized that Ctrl-Alt-Del was handled in the BIOS, I found that there aren't any.
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