On 5 Apr 1999, Kai Henningsen wrote:
> Changes like that aren't worth the work you put in, *unless* those are the
> 1-2% your program takes too long to meet some sort of deadline. *And* you
> have already given up on larger improvements.
hmm. 1-2% can be a huge difference over time. being that we aim to run
servers for years between downtime, this is a very significant figure. in
varying environments and over time an object could could be the base of a
time slew. if the original figure is modified by such a percentage over
time then the impact can certainly be "worthy".
consider a server that pumps out 4million hits a day. what's one percent of
that worth? perhaps you're benching. another 40K hits is a fair addition.
at 2%, 80K is quite significant.
now take a dozen tweeks at 1-2% of benefit. every little bit helps.
640K out to be enough for anyone. oh, another few k isn't a big
deal...don't bother about being efficient.
we(i) use linux because it's built to higher standards. i very much enjoy
tweeking code for a tiny bit of performance and/or efficiency gain.
:)
-d
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