cvs commit: src/sys/dev/fxp if_fxp.c if_fxpvar.h
M. Warner Losh
imp at bsdimp.com
Tue Apr 29 15:59:20 PDT 2003
In message: <16046.64504.186129.388342 at emerger.yogotech.com>
Nate Williams <nate at yogotech.com> writes:
: > A mutex is far more expensive than an spl.
: Huh? If so, then something is *really* screwed up, since SPL's block
: out lots of things, while mutex's can/should block little things.
: That's how we get greater parrallelism.
A mutex is more expensive to take out, but blocks fewer things.
splfoo() is a lot faster to execute, but does block a lot of other
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