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Re: [PLUG] systemtap-runtime warning during RHEL 5.3 yum update
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On Fri, Feb 27, 2009 at 1:19 PM, <mdecheser@comcast.net> wrote:
> I received a report to stdout during the cleanup process of yum update while
> updating from RHEL 5.2 to RHEL 5.3.
>
> Cleanup : systemtap-runtime ##################### [649/754]
> /var/tmp/rpm-tmp.11477: line 25: [: 7814VERSION: integer expression expected
>
To me, this looks like a minor error in one of the spec files
associated to the rpm. If it really bugs you, unpack the rpm and debug
the shell scripts (rpm2cpio).
> systemtap is not a tool that I'm aware is directly or actively used in
> day-to-day operation of the server.
>
Systemtap is essentially a lobotomized version of dtrace. Its been
improving but still has a ways to go in terms of usability IMO.
However, it (systemtap) can still be much more useful than sar output
for debugging performance bottlenecks. There is also effort to port
dtrace to linux. Personally I find dtrace easier to work with, but
that's just me (and quite a few other people). That said, both are
really useful when you need them. Being aware of what they are may
save you quite a bit of guesswork later. Below are links to more info
for both.
http://en.wikipedia.org/wiki/DTrace
http://sourceware.org/systemtap/
--
J.
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