Messages in this thread | | | Date | Fri, 21 Nov 2008 16:28:29 +0100 | From | Eric Dumazet <> | Subject | Re: [PATCH] fs: pipe/sockets/anon dentries should not have a parent |
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Ingo Molnar a écrit : > * Eric Dumazet <dada1@cosmosbay.com> wrote: > >> Before patch, time to run 8 millions of close(socket()) calls on 8 >> CPUS was : >> >> real 0m27.496s >> user 0m0.657s >> sys 3m39.092s >> >> After patch : >> >> real 0m23.997s >> user 0m0.682s >> sys 3m11.193s > > cool :-) > > What would it take to get it down to: > >>> Cost if run one one cpu : >>> >>> real 0m1.561s >>> user 0m0.092s >>> sys 0m1.469s > > i guess asking for a wall-clock cost of 1.561/8 would be too much? :) >
It might be possible, depending on the level of hackery I am allowed to inject in fs/dcache.c and fs/inode.c :)
wall cost of 1.56 (each cpu runs one loop of one million iterations)
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