Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753237AbYKQOJn (ORCPT ); Mon, 17 Nov 2008 09:09:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752217AbYKQOJf (ORCPT ); Mon, 17 Nov 2008 09:09:35 -0500 Received: from fg-out-1718.google.com ([72.14.220.159]:12388 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752089AbYKQOJe (ORCPT ); Mon, 17 Nov 2008 09:09:34 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=uaZSuW+JbUmIuWNae1Sk7g/Y0LYXNwJSX1mHaHNoc+UZdLi5WRcuohvANGnE+9m1CQ mqRGPWBtmoqHH/btQkdZCD8HyrwP4HvbsG6cR5FmwmnX5MvBsBhVVXdY7PFqosJ6R3P+ OXZqJ5BZKgy630/0nKFccZUEk2YVqEQH5D/Go= Message-ID: Date: Mon, 17 Nov 2008 16:09:32 +0200 From: "Victoria Muntean" To: "Hugh Dickins" Subject: Re: size of swapped-out part of the process Cc: "Kernel Linux" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1418 Lines: 32 On Mon, Nov 17, 2008 at 4:02 PM, Hugh Dickins wrote: > On Mon, 17 Nov 2008, Victoria Muntean wrote: >> How can I calculate size of swapped-out part of the process from >> /proc/PID/*, even if approximately ? >> For example, I have VmSize=1216192 kB, VmRSS = 628788 kB, but global >> swap-in-use==0. >> Hence (VmSize - VmRSS) is far from being swapped-out part of the >> process. What is ? > > I'm sorry, we don't record those numbers per process or per mm, > so you won't find them in /proc/PID/status or /proc/PID/statm. > > And we'd probably resist accepting a patch to add them, > so as not to enlarge key data structures to hold them. > > There's also an ambiguity about what "swapped-out" means: does > it include shared file pages which were once mapped into the > process, but have since been freed under memory pressure? > > But it looks like you're interested in swapped-out to mean written > on swap. In that case, if you have CONFIG_PROC_PAGE_MONITOR=y, > you can read /proc/PID/smaps and add up all the "Swap:" lines. ok thanks > But don't keep reading it in a tight loop: that would > tend to detract from the performance of your system. -- 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/