Significant performance problem with modprobe
Lauri Kasanen
curaga at operamail.com
Wed Jun 15 13:17:33 UTC 2011
> The second thing that popped up in callgrind is the way bb modprobe does
> the modentry caching. Apparently the amount of modentries can blowup
> depending on how you've configured. Actually, this can even be the
> slowest thing depending on the exact thing how things go.
>
> Please try the inlined patch below.
Hi Timo
The patch was line-wrapped, but after fixing, it sped bb up from 1.9x to
1.78x; less than _unlocked but still measurable. I haven't tried it in
combination with getc_unlocked.
It looks good to me.
- Lauri
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