Re: badness in commit 0709298 (pmda scripts: deprecate forced_restart from Install scripts)

"Nathan Scott" <[email protected]>
Newsgroups gmane.comp.sysutils.pcp
Message-ID <[email protected]>
Hi Ken,

----- Original Message -----
> [...]
>     pmda scripts: deprecate forced_restart from Install scripts
> 
> which certainly smells like it is in the right place.

+1

> Has anyone else seen this failure?

Not here.  But I'm pretty sure it will be related to the changes to the
speed at which we can now Install/Remove PMDAs, with no pmcd restart and
the relative uncertainty around signal delivery timing.  The way we have
sprinkled sleeps throughout many shell scripts to deal with it is always
a bit problematic/racey.

I wonder if we should add a pmcd.signals count to provide more reliable
(pmcd_wait-alike, via pmprobe-ing on that metrics) checking for shell
scripts?  Not sure I can get to this before vacation time, but in the
interim (and/or if we don't do the above), experimenting with tweaks to
$signal_delay and $check_delay in simple/Install should resolve it.

cheers.

--
Nathan

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