From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by ug-out-1314.google.com with SMTP id s2so50470uge for ; Tue, 10 Apr 2007 23:53:53 -0700 (PDT) Message-ID: <84144f020704102353r7dcc3538u2e34237d3496630e@mail.gmail.com> Date: Wed, 11 Apr 2007 09:53:53 +0300 From: "Pekka Enberg" Subject: Re: Why kmem_cache_free occupy CPU for more than 10 seconds? In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Sender: owner-linux-mm@kvack.org Return-Path: To: Zhao Forrest Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On 4/11/07, Zhao Forrest wrote: > We're using RHEL5 with kernel version 2.6.18-8.el5. > When doing a stress test on raw device for about 3-4 hours, we found > the soft lockup message in dmesg. > I know we're not reporting the bug on the latest kernel, but does any > expert know if this is the known issue in old kernel? Or why > kmem_cache_free occupy CPU for more than 10 seconds? Sounds like slab corruption. CONFIG_DEBUG_SLAB should tell you more. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org