Subject: Re: [linux-audio-dev] lowish-latency patch and toolchain
From: David Olofson (david_AT_gardena.net)
Date: Sun Jul 09 2000 - 01:29:03 EEST
On Sat, 08 Jul 2000, Khimenko Victor wrote:
> In <20000708203335Z4895-532+18680_AT_nic.funet.fi> Juhana Sadeharju (kouhia_AT_nic.funet.fi) wrote:
[...]
> > Lets not talk about 4 ms latency but 7 ms from practical point.
>
> Why ?
I agree with Juhana; the interesting figure is 7 ms. The reason for
this is that if 7 ms happens often enough to be registered within the
period of a normal benchmark/test, then it's happening way too often!
7 ms has to be regarded as the practical worst case latency, and it's
too much even if it was guaranteed never to occur twice within say, 5
seconds. (Allowing RT thread to catch up so that another 7 ms peak
doesn't generate a drop-out.) Once in a few weeks may be acceptable.
Once in 10 hrs, and we don't have a seriously usable solution.
//David
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