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Re: 20011008: IDD latencies at PSU (cont.)
- Subject: Re: 20011008: IDD latencies at PSU (cont.)
- Date: Fri, 12 Oct 2001 08:25:46 -0600
Mike Schmidt wrote:
>
> > Then, you can run it on the machine with 'iperf -s -w 16K' for a server
> > with a 16K TCP window. That window size is probably low for the rtt
> > time between PSU and NCAR, but it should do for a start. I don't
> > remember if LDM adjusts it's window or segment size.
>
> and agree that it may be appropriate to bump the window size to 64K
> or more given the circumstances.
>
> I'm not intimately familiar with the LDM code, but I'm relatively sure
> that it doesn't do any sort of on-the-fly connection tuning. On our
> end, we turn up the system defaults on the (Solaris) LDM server.
>
The LDM sends in 16K blocks or less. Is this pertainent to "window
size"? And, no, I don't believe there is any dynamic tuning.
Anne
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Anne Wilson UCAR Unidata Program
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