Re: gradual timeofday overhaul

[Chris Friesen]

Perez-Gonzalez, Inaky wrote:

> Now, the ugly case would be if number_of_context_swiches_per_second > HZ.
> In HZ = 100, this could be happening, but in HZ=1000, in a single CPU
> ...well, that would be TOO weird [of course, a real-time app with a 
> 1ms period would do that, but it'd require at least an HZ of 10000 to
> work more or less ok and we'd be below the watermark].

It's easy to have >>1000 context switches per second on a server.  Consider a 
web server that receives a network packet, issues a request to a database, hands 
some work off to a thread so the main app doesn't block, then sends a response. 
 That could be a half dozen context switches per packet.  If you have 20000 
packets/sec coming in....


Chris
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