From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 70439CA0FE1 for ; Fri, 1 Sep 2023 12:31:42 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 5CD003CCD3B for ; Fri, 1 Sep 2023 14:31:40 +0200 (CEST) Received: from in-5.smtp.seeweb.it (in-5.smtp.seeweb.it [217.194.8.5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id A37C43CBB7E for ; Fri, 1 Sep 2023 14:31:29 +0200 (CEST) Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by in-5.smtp.seeweb.it (Postfix) with ESMTPS id EAE8F6006D4 for ; Fri, 1 Sep 2023 14:31:28 +0200 (CEST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 4CDFB1F8AC; Fri, 1 Sep 2023 12:31:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1693571488; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=T0++MmlP5+gPELgpQq3z6Es91IW4Q3UEI85XaVeKg5A=; b=mu9njyXJX4V3ZvTBBczHKujjMhXTuiH8UgTrGO4mTR6rrTSdhq9gGIjkIZxGGUlOCdiHh8 EmH3uM3KuScU836si30mYlNnbME5FSqfCQv1FMNVo7gfpSMEpSNIfTGyrUrIhiro8NCkCH RrGVcEbUHMR5glsyvRWnndam2vzzfzY= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1693571488; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=T0++MmlP5+gPELgpQq3z6Es91IW4Q3UEI85XaVeKg5A=; b=KFkh+XY/CI+hU8jTUzll9NHRwulPzOuC+yUy0M7IXiji7CBz4RPpRJwbIePCib+rFWqxrb icgWvT8/ZfQfAYCQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id F2E421358B; Fri, 1 Sep 2023 12:31:27 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id x7XDOJ/Z8WRkJQAAMHmgww (envelope-from ); Fri, 01 Sep 2023 12:31:27 +0000 Date: Fri, 1 Sep 2023 14:31:26 +0200 From: Petr Vorel To: Cyril Hrubis Message-ID: <20230901123126.GA343678@pevik> References: <20230829073821.2580-1-andrea.cervesato@suse.de> <20230901103758.GC323151@pevik> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Virus-Scanned: clamav-milter 1.0.1 at in-5.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH v3] Add process_madvise01 test X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Petr Vorel Cc: ltp@lists.linux.it Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" > Hi! > > > > + TST_EXP_EXPR(map_before.swap < map_after.swap, > > > > + "Most of the memory has been swapped out: %dkB out of %dkB", > > > > + map_after.swap, > > > Although it's unlikely that map_before.swap will be non-zero we should > > > print the difference here, so I've changed this part to: > > > map_after.swap - map_before.swap > > > And pushed, thanks. > > FYI this new test is failing on current openSUSE Tumbleweed (kernel 6.4.12-1): > > tst_test.c:1559: TINFO: Timeout per run is 0h 00m 30s > > process_madvise01.c:38: TINFO: Allocate memory: 1048576 bytes > > process_madvise01.c:99: TINFO: Reclaim memory using MADV_PAGEOUT > > process_madvise01.c:62: TFAIL: Expect: Most of the memory has been swapped out: 0kB out of 1024kB > > Summary: > > passed 0 > > failed 1 > > broken 0 > > skipped 0 > > warnings 0 > > Test works well on current Debian unstable with kernel 6.4.11. > > Could you please have a look if it's a test or a kernel bug? > Does the machine where it fails even have any swap? I has CONFIG_SWAP=y, but vmstat reports si and so as 0. Therefore machine probably does not have any swap. > I suppose that we should check for: > 1) CONFIG_SWAP in the kernel .config > 2) /proc/meminfo SwapFree: > $pagesize kB +1. > I guess that the madvise kicks off the kernel swapper, but it may take > some time for the memory to be actually swapped. Sounds reasonable. BTW I wonder if we should add 'vmstat' or 'cat /proc/meminfo' to ver_linux. Kind regards, Petr -- Mailing list info: https://lists.linux.it/listinfo/ltp