Re: automatic derived metrics slowing down remote pcp clients, esp. pmlogconf

["Frank Ch. Eigler" <fche@xxxxxxxxxx>]

Hi -

> since derived metrics are never logged (they're defined client side only),
> the above makes the most sense. This is akin to the call to the call to
> __pmSetInternalState(PM_STATE_PMCS) in tools such as pmlogextract and other
> places. Looks like there are few othertools that need to set this too.

OK, how about:

diff --git a/src/pmlogconf/pmlogconf.sh b/src/pmlogconf/pmlogconf.sh
index 3531c676130e..dfd2e92137f4 100755
--- a/src/pmlogconf/pmlogconf.sh
+++ b/src/pmlogconf/pmlogconf.sh
@@ -28,6 +28,11 @@
 # Get standard environment
 . $PCP_DIR/etc/pcp.env
 
+# Clear this part to ensure many short-lived pmprobe children
+# don't waste time analyzing derived metrics.
+PCP_DERIVED_CONFIG=
+export PCP_DERIVED_CONFIG
+
 status=1
 tmp=`mktemp -d /tmp/pcp.XXXXXXXXX` || exit 1
 trap "rm -rf $tmp; exit \$status" 0 1 2 3 15