From owner-svn-src-all@FreeBSD.ORG Fri Feb 28 01:53:38 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id F2F065FB; Fri, 28 Feb 2014 01:53:37 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id D3FF91F93; Fri, 28 Feb 2014 01:53:37 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s1S1rbKt010588; Fri, 28 Feb 2014 01:53:37 GMT (envelope-from markj@svn.freebsd.org) Received: (from markj@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s1S1rbpl010587; Fri, 28 Feb 2014 01:53:37 GMT (envelope-from markj@svn.freebsd.org) Message-Id: <201402280153.s1S1rbpl010587@svn.freebsd.org> From: Mark Johnston Date: Fri, 28 Feb 2014 01:53:37 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r262595 - vendor-sys/illumos/dist/uts/common/dtrace vendor/illumos/dist/cmd/dtrace/test/tst/common/misc X-SVN-Group: vendor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Feb 2014 01:53:38 -0000 Author: markj Date: Fri Feb 28 01:53:37 2014 New Revision: 262595 URL: http://svnweb.freebsd.org/changeset/base/262595 Log: 4478 dtrace_dof_maxsize is far too small illumos/illumos-gate@d339a29bb4765c4b6883a935cf69b669cd05bca0 Added: vendor/illumos/dist/cmd/dtrace/test/tst/common/misc/tst.dofmax.ksh Changes in other areas also in this revision: Modified: vendor-sys/illumos/dist/uts/common/dtrace/dtrace.c Added: vendor/illumos/dist/cmd/dtrace/test/tst/common/misc/tst.dofmax.ksh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ vendor/illumos/dist/cmd/dtrace/test/tst/common/misc/tst.dofmax.ksh Fri Feb 28 01:53:37 2014 (r262595) @@ -0,0 +1,97 @@ +# +# CDDL HEADER START +# +# The contents of this file are subject to the terms of the +# Common Development and Distribution License (the "License"). +# You may not use this file except in compliance with the License. +# +# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +# or http://www.opensolaris.org/os/licensing. +# See the License for the specific language governing permissions +# and limitations under the License. +# +# When distributing Covered Code, include this CDDL HEADER in each +# file and include the License file at usr/src/OPENSOLARIS.LICENSE. +# If applicable, add the following below this CDDL HEADER, with the +# fields enclosed by brackets "[]" replaced with your own identifying +# information: Portions Copyright [yyyy] [name of copyright owner] +# +# CDDL HEADER END +# + +# +# Copyright (c) 2012, Joyent, Inc. All rights reserved. +# + +let j=8 + +enable() +{ + prog=/var/tmp/dtest.$$.d + err=/var/tmp/dtest.$$.err + + nawk -v nprobes=$1 'BEGIN { \ + for (i = 0; i < nprobes - 1; i++) { \ + printf("dtrace:::BEGIN,\n"); \ + } \ + \ + printf("dtrace:::BEGIN { exit(0); }\n"); \ + }' /dev/null > $prog + + dtrace -qs $prog > /dev/null 2> $err + + if [[ "$?" -eq 0 ]]; then + return 0 + else + if ! grep "DIF program exceeds maximum program size" $err \ + 1> /dev/null 2>&1 ; then + echo "failed to enable $prog: `cat $err`" + exit 1 + fi + + return 1 + fi +} + +# +# First, establish an upper bound +# +let upper=1 + +while enable $upper ; do + let lower=upper + let upper=upper+upper + echo success at $lower, raised to $upper +done + +# +# Now search for the highest value that can be enabled +# +while [[ "$lower" -lt "$upper" ]]; do + let guess=$(((lower + upper) / 2)) + echo "lower is $lower; upper is $upper; guess is $guess\c" + + if enable $guess ; then + if [[ $((upper - lower)) -le 2 ]]; then + let upper=guess + fi + + echo " (success)" + let lower=guess + else + echo " (failure)" + let upper=guess + fi +done + +let expected=10000 + +if [[ "$lower" -lt "$expected" ]]; then + echo "expected support for enablings of at least $expected probes; \c" + echo "found $lower" + exit 1 +fi + +echo "maximum supported enabled probes found to be $lower" +exit 0 +