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Re: Random question about performance
- From: Grant Edwards <grante at visi dot com>
- To: ecos-discuss at ecos dot sourceware dot org
- Date: Mon, 20 Feb 2006 09:07:03 -0600
- Subject: [ECOS] Re: Random question about performance
- References: <6.1.2.0.2.20060219200723.045f6498@66.125.189.29>
In gmane.os.ecos.general, you wrote:
> So Redboot isn't a speed demon, I knew that, but pings to redboot take on
> average 4 - 6 milliseconds. Pings to UNIX running on the same hardware take
> .4 - .8 milleseconds. That is not quite 10x slower. I know Redboot is a
> polled networking system but it doesn't have to context switch either.
> What's up with that?
In some modes, RedBoot only checks for network input once every
10ms. That means average ping times of around 5ms. On my
platform, I increased the polling rate to 1-2 ms to make
RedBoot more responsive to network traffic.
--
Grant Edwards grante Yow! How's the wife? Is
at she at home enjoying
visi.com capitalism?
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