Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755784AbZKVW1S (ORCPT ); Sun, 22 Nov 2009 17:27:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753234AbZKVW1S (ORCPT ); Sun, 22 Nov 2009 17:27:18 -0500 Received: from gate.lvk.cs.msu.su ([158.250.17.1]:33236 "EHLO mail.lvk.cs.msu.su" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752745AbZKVW1R (ORCPT ); Sun, 22 Nov 2009 17:27:17 -0500 X-Greylist: delayed 341 seconds by postgrey-1.27 at vger.kernel.org; Sun, 22 Nov 2009 17:27:17 EST X-Spam-ASN: From: "Nikita V. Youshchenko" To: Michael Tokarev Subject: Re: Why processes on linux loses signals? Date: Mon, 23 Nov 2009 01:21:40 +0300 User-Agent: KMail/1.9.9 Cc: Linux-kernel References: <4B09A9CE.4080300@msgid.tls.msk.ru> In-Reply-To: <4B09A9CE.4080300@msgid.tls.msk.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200911230121.40885@blacky.localdomain> X-AV-Checked: ClamAV using ClamSMTP Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 650 Lines: 17 > In short, processes on linux loses signals. It happens > rarely, but it happens, and the frequency of this happening > is enough to be annoying. > > ... > > The problem becomes much much worse when a system has multiple > cores... But with even second core the issue emerges almost > immediately ... Looks like a classical race description. Double-check your user-space code for signal-related races. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/