On 04/05/10 15:24, Peter Schuller wrote:
In the urxvt case, I am basing my claim on informal observations.
I.e., "hit terminal launch key, wait for disks to rattle, get my
terminal". Repeat. Only by repeating it very many times in very rapid
succession am I able to coerce it to be cached such that I can
immediately get my terminal. And what I mean by that is that it keeps
necessitating disk I/O for a long time, even on rapid successive
invocations. But once I have repeated it enough times it seems to
finally enter the cache.
Are you sure you're not seeing unrelated disk update activity like atime
updates, mtime updates on pseudo-terminals, etc., ?
I'd want to start looking more closely at I/O traces (dtrace can be very
helpful here) before blaming any specific system component for the
unexpected I/O.
- Bill
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