From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Grundler Subject: Re: [parisc-linux] rcu torture test panics on 2-way pa8800 Date: Sun, 22 Jan 2006 11:43:39 -0700 Message-ID: <20060122184339.GA26201@colo.lackof.org> References: <20060122071308.GA8592@colo.lackof.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: parisc-linux@lists.parisc-linux.org Return-Path: In-Reply-To: <20060122071308.GA8592@colo.lackof.org> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org On Sun, Jan 22, 2006 at 12:13:08AM -0700, Grant Grundler wrote: > Hi, > I accidentally include RCU_TORTURE_TEST=y in the 2.6.16-rc1-pa2 > kernels I was building and it worked fine on two out of three > of the rp3440 (pa8800 CPU) boxes I'm banging on. ... > Got the following panic on the 2-core 800Mz box: FYI. One of the 4-way 800Mhz rp3440's ran rcu torture test overnight: ioz:/usr/src/linux-2.6# w 10:27:57 up 10:46, 1 user, load average: 9.01, 9.01, 9.00 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root ttyS1 - 23:45 0.00s 0.73s 0.04s w ioz:/usr/src/linux-2.6# uname -a Linux ioz 2.6.16-rc1-pa1 #3 SMP Thu Jan 19 17:26:22 PST 2006 parisc64 GNU/Linux top - 10:27:33 up 10:45, 1 user, load average: 9.01, 9.02, 9.00 Tasks: 78 total, 9 running, 69 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0% us, 99.8% sy, 0.0% ni, 0.2% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 2053212k total, 976424k used, 1076788k free, 162632k buffers Swap: 0k total, 0k used, 0k free, 482212k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 135 root 39 19 0 0 0 R 67.6 0.0 318:58.94 rcu_torture_rea 129 root 39 19 0 0 0 R 50.2 0.0 320:48.46 rcu_torture_rea 130 root 39 19 0 0 0 R 50.2 0.0 317:37.93 rcu_torture_rea 128 root 39 19 0 0 0 R 48.3 0.0 317:52.39 rcu_torture_rea ... something is clearly working differently on the 2-way (single socket) machine. I'm inclined to believe it's a clue about L2 cache at this point. grant _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux