Messages in this thread | | | Date | Mon, 15 Dec 2003 21:20:34 -0800 | From | Mitchell Blank Jr <> | Subject | Re: Increasing HZ (patch for HZ > 1000) |
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john stultz wrote: > Indeed, with all the trouble HZ==1000 has caused, I'm thinking that > playing w/ HZ at 10k and 10 would be good stress tests for the time > subsystem.
I think setting HZ much lower than 100 might break some drivers that do things like: timeout = jiffies + (HZ / 50);
Not sure if any of the common drivers have this problem but be on the lookout for it if you want to try running w/ really low HZ.
I suppose there should really be a "FRACTION_OF_SECOND()" macro or something that always returns >0 for specifying these really short delays.
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