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Ziga Mahkovec <ziga.mahkovec(a)klika.si> wrote:
Hmmm.
What happens to overall boot time if rhgb and dhclient is disabled, with and
without readahead?
Both rhgb and dhclient seem like they can be optimized individually — so their
contribution to overall boot time can be disregarded while studying the rest
of the boot process — and given the relative runtime and order of readahead
vs. the following processes, readahead looks like it may be wasted here.
Also interesting would be a graph of a minimal boot — disable all nonessential
services; portmap, rpc, gpm, cups, etc. — into text console. It'd reduce the
“noise” in the graph and might reveal something interesting about the
remaining processes.
Oh, BTW, what is that apparent zombie of S04readahead_early? Just a timing
issue with the sampling?
- --
We've gotten to the point where a human-readable, human-editable text format
for structured data has become a complex nightmare where somebody can safely
say "As many threads on xml-dev have shown, text-based processing of XML is
hazardous at best" and be perfectly valid in saying it. -- Tom Bradford
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