Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753074AbYKQTmU (ORCPT ); Mon, 17 Nov 2008 14:42:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751982AbYKQTmM (ORCPT ); Mon, 17 Nov 2008 14:42:12 -0500 Received: from mu-out-0910.google.com ([209.85.134.186]:15543 "EHLO mu-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751760AbYKQTmL (ORCPT ); Mon, 17 Nov 2008 14:42:11 -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=e70+uRH7GPSjk/qcMnsb15elw8ay7ibScU6nHWwSzoQwLmj3nFJ5+ESPblkp51mYnD /HOzBi020nsCyjRA9nqmU/X1aZSivojxw+25YVV2P2DL/B2uPLMcfIwVaFwQ7u3oORXL 3YIphh2J+Zj3Cmua6pDeC/UADhYGt+wykYXY8= Message-ID: Date: Mon, 17 Nov 2008 21:42:09 +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: 1404 Lines: 30 On 11/17/08, 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. Can you possibly explain what types of pages create "VSZ>>RSZ" effect in total absence of swapping and plenty of free memory ? -- 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/