From owner-freebsd-bugs@FreeBSD.ORG Fri Sep 7 23:10:02 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 5BB171065670 for ; Fri, 7 Sep 2012 23:10:02 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 3467A8FC15 for ; Fri, 7 Sep 2012 23:10:02 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q87NA2ok076842 for ; Fri, 7 Sep 2012 23:10:02 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q87NA2f2076833; Fri, 7 Sep 2012 23:10:02 GMT (envelope-from gnats) Resent-Date: Fri, 7 Sep 2012 23:10:02 GMT Resent-Message-Id: <201209072310.q87NA2f2076833@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Garrett Cooper Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E68F5106566B for ; Fri, 7 Sep 2012 23:01:54 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22]) by mx1.freebsd.org (Postfix) with ESMTP id C6BE18FC1A for ; Fri, 7 Sep 2012 23:01:54 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.5/8.14.5) with ESMTP id q87N1snG018748 for ; Fri, 7 Sep 2012 23:01:54 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.5/8.14.5/Submit) id q87N1sJi018747; Fri, 7 Sep 2012 23:01:54 GMT (envelope-from nobody) Message-Id: <201209072301.q87N1sJi018747@red.freebsd.org> Date: Fri, 7 Sep 2012 23:01:54 GMT From: Garrett Cooper To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: bin/171427: [sh] Hitting ^Z doesn't suspend jobs like expected X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Sep 2012 23:10:02 -0000 >Number: 171427 >Category: bin >Synopsis: [sh] Hitting ^Z doesn't suspend jobs like expected >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Sep 07 23:10:01 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Garrett Cooper >Release: 7.4-RELEASE/9.1-RELEASE >Organization: EMC Isilon >Environment: FreeBSD 7.4-STABLE FreeBSD 7.4-STABLE #0: Fri Aug 24 15:41:28 UTC 2012 root@bf049.west.isilon.com:/usr/obj/mnt/freebsd/stable/7/sys/ISI-GENERIC amd64 FreeBSD wf048.west.isilon.com 9.1-RC1 FreeBSD 9.1-RC1 #0: Fri Aug 17 02:18:40 PDT 2012 root@wf048.west.isilon.com:/usr/obj/mnt/freebsd/releng/9.1/sys/ISI-GENERIC amd64 >Description: Running some netperf tests in a while loop like so under /bin/sh, I'm running into cases where the while loop continues to loop, even after I mash on ^C (which I would expect to kill netperf eventually -- works on 9.1-RC1, but not 7.4-STABLE) or ^Z (I would expect job control to stop spawning jobs, but it doesn't in either version): bf049# exec sh wf048# exec sh $ while : ; do netperf -cCjt TCP_STREAM -H 10.7.187.52 -l 10 -- -D; done .. ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^ZTCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo Recv Send Send Utilization Service Demand Socket Socket Message Elapsed Send Recv Send Recv Size Size Size Time Throughput local remote local remote bytes bytes bytes secs. 10^6bits/s % C % C us/KB us/KB 65536 32768 32768 10.01 810.28 8.05 7.52 3.254 6.080 TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.56 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo Bash on the other hand does stop the code snippet: $ while : ; do netperf -cCjt TCP_STREAM -H 10.7.187.52 -l 10 -- -D; done TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.7.187.52 () port 0 AF_INET : nodelay : histogram : interval : dirty data : demo ^Z [1]+ Stopped netperf -cCjt TCP_STREAM -H 10.7.187.52 -l 10 -- -D The expected behavior isn't documented in sh(1) and in the opengroup sh(1) manpage. >How-To-Repeat: exec sh while : ; do netperf -cCjt TCP_STREAM -H $IP -l 10 -- -D; done You could probably replace the second command (to netperf) with something that blocks. >Fix: >Release-Note: >Audit-Trail: >Unformatted: