performance of jailed processes

[Dag-ErlingSmørgrav]

Robert Watson <rwatson at freebsd.org> writes:
> Somewhat more painful suggestion, but could you generate ktraces against a
> mysql client doing the query inside and out of jail, then using whatever
> flag sets relative timestamps on kdump, diff the two and see where the
> substantial differences begin?

I'll give it a shot tomorrow.

> 13 seconds is too long for most of the potential things I have in mind...

although the query only returns one row, it's a pretty big row, so 13
seconds could be explained by per-syscall or per-packet overhead.

DES
-- 
Dag-Erling Smørgrav - des at des.no