From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <systemtap-return-24873-listarch-systemtap=sources.redhat.com@sourceware.org>
Received: (qmail 88373 invoked by alias); 6 Sep 2016 18:51:35 -0000
Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <systemtap.sourceware.org>
List-Subscribe: <mailto:systemtap-subscribe@sourceware.org>
List-Post: <mailto:systemtap@sourceware.org>
List-Help: <mailto:systemtap-help@sourceware.org>, <http://sourceware.org/lists.html#faqs>
Sender: systemtap-owner@sourceware.org
Received: (qmail 87147 invoked by uid 48); 6 Sep 2016 18:51:21 -0000
From: "dsmith at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug server/20557] It seems like that switching output file doesn't work.
Date: Tue, 06 Sep 2016 18:51:00 -0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: systemtap
X-Bugzilla-Component: server
X-Bugzilla-Version: unspecified
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: dsmith at redhat dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution:
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: systemtap at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-20557-6586-gsFVqHCS5c@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-20557-6586@http.sourceware.org/bugzilla/>
References: <bug-20557-6586@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2016-q3/txt/msg00242.txt.bz2

https://sourceware.org/bugzilla/show_bug.cgi?id=3D20557

--- Comment #3 from David Smith <dsmith at redhat dot com> ---
Just to be clear, here is how this is supposed to work:

1) Run 'stap -F ...'. Systemtap will run in the background, outputting data
files. It prints the pid of the background stap process.

# stap -F -o f.out -S 1,3 ../src/testsuite/systemtap.base/flightrec2.stp=20
31067

2) System will output up to 3 (in my case) files of around 1 megabyte each.=
 As
soon as the 4th file would be written, it deletes the earliest file.

After waiting a while, I see:

# ls -l f.out*
-rw-rw-r--. 1 dsmith dsmith 1034000 Sep  6 13:33 f.out.71
-rw-rw-r--. 1 dsmith dsmith 1034000 Sep  6 13:33 f.out.72
-rw-rw-r--. 1 dsmith dsmith  517000 Sep  6 13:33 f.out.73

then later:

# ls -l f.out*
-rw-rw-r--. 1 dsmith dsmith 1034000 Sep  6 13:35 f.out.175
-rw-rw-r--. 1 dsmith dsmith 1034000 Sep  6 13:35 f.out.176
-rw-rw-r--. 1 dsmith dsmith  770000 Sep  6  2016 f.out.177

3) To stop systemtap, kill the pid output earlier.

# kill 31067

--=20
You are receiving this mail because:
You are the assignee for the bug.