From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32631 invoked by alias); 2 Jun 2006 15:34:07 -0000 Received: (qmail 32491 invoked by uid 48); 2 Jun 2006 15:33:29 -0000 Date: Fri, 02 Jun 2006 15:34:00 -0000 Message-ID: <20060602153329.32490.qmail@sourceware.org> From: "ldimaggi at redhat dot com" To: systemtap@sources.redhat.com In-Reply-To: <20060601184524.2725.ldimaggi@redhat.com> References: <20060601184524.2725.ldimaggi@redhat.com> Reply-To: sourceware-bugzilla@sourceware.org Subject: [Bug runtime/2725] Attempting to probe all kernel functions hangs FC5 X-Bugzilla-Reason: AssignedTo Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q2/txt/msg00553.txt.bz2 ------- Additional Comments From ldimaggi at redhat dot com 2006-06-02 15:33 ------- Thanks for all the suggestions feedback - I need to narrow this down - some more notes, answers to questions... Architecture = i386, T41 thinkpad (1GB RAM), Linux dhcp83-56.boston.redhat.com 2.6.16-1.2122_FC5 #1 Sun May 21 15:01:01 EDT 2006 i686 i686 i386 GNU/Linux It's a limit problem - 10K+ probes are being set: ------------ static char const * dwarf_kprobe_probe_613_location_names[10481] = { "kernel.function(\"run_init_process@init/main.c:666\")", "kernel.function(\"init@init/main.c:690\")", "kernel.function(\"rest_init@init/main.c:389\")", ------------ stap_2615.ko is large too: ------------ [root@dhcp83-56 stap0bMFBZ]# ll total 6552 -rw-r--r-- 1 root root 127 Jun 2 11:05 Makefile -rw-r--r-- 1 root root 1066809 Jun 2 11:05 stap_2615.c -rw-r--r-- 1 root root 2188299 Jun 2 11:05 stap_2615.ko -rw-r--r-- 1 root root 1929 Jun 2 11:05 stap_2615.mod.c -rw-r--r-- 1 root root 34008 Jun 2 11:05 stap_2615.mod.o -rw-r--r-- 1 root root 2155316 Jun 2 11:05 stap_2615.o -rw-r--r-- 1 root root 692476 Jun 2 11:05 stap-symbols.h -rw-r--r-- 1 root root 492534 Jun 2 11:05 symbols.sorted ------------ This script reliably hangs - or even reboots the system: ------------ #!/usr/bin/env stap probe begin { log("begin") } probe end { log("end") } probe kernel.function("*") { } ------------ Nothing interesting is being written to /var/messages -- http://sourceware.org/bugzilla/show_bug.cgi?id=2725 ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.