Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 16 Apr 2013 12:57:08 -0700
From:      Navdeep Parhar <np@FreeBSD.org>
To:        FreeBSD Current <freebsd-current@freebsd.org>
Subject:   DTrace gone quiet?
Message-ID:  <516DAD14.9020307@FreeBSD.org>

next in thread | raw e-mail | index | archive | help
I just upgraded my kernel and userspace to head (r249552) and I notice
that DTrace doesn't output anything until I hit ctrl-c.  All previous
"hits" on the probe appear lost.  For example:

# dtrace -n 'fbt::ether_output:entry'
dtrace: description 'fbt::ether_output:entry' matched 1 probe

(No output here.  I waited a long time before the ctrl-c and I know the
system is actively transmitting and receiving Ethernet traffic).

^C
CPU     ID                    FUNCTION:NAME
  9  29354               ether_output:entry
  8  29354               ether_output:entry
  8  29354               ether_output:entry
  8  29354               ether_output:entry


Can anyone confirm or contradict this on a recent HEAD (around r249552
in my case)?

Regards,
Navdeep



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?516DAD14.9020307>