From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from server4.hayhost.am (server4.hayhost.am [2.56.206.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 728EB20A5CB for ; Mon, 7 Apr 2025 16:44:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=2.56.206.6 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744044258; cv=none; b=Jozk7+QPbcz4D0XYxE5AzBu60deBKpaWv3wXMCUpE3qIB9dcNUUv4adUGQWjzUtUvXlO1pcAVMp1TVJa80mcUAEqwmlZ34G250RpdPU2NPt1PAdkr34EgMvyPSnahLwFA6TDslfCTdZdIgtcJjbUn9LXH2KB2MtKWjvCwGwIoWs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744044258; c=relaxed/simple; bh=b890hTciczeQEKKYTzkqwPoz9VZzrnBug0lJh6V8AIY=; h=MIME-Version:Date:From:To:Cc:Subject:In-Reply-To:References: Message-ID:Content-Type; b=gIVqAAHJEBVgrIqKgUocfTnEewE/anYjhZvVzE53utq3WpsOXpr+pzhX9FQ6O31yET7uxpta2aC/KtHqKBsVRktq9+lygQprBw8daecp0poQeeVXUjNUo/vxup4u+Ki+950W8c/96XcB6csr+GN6F0JAbRJb2sTgIIlrv1X6GhQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=beldev.am; spf=pass smtp.mailfrom=beldev.am; dkim=pass (2048-bit key) header.d=beldev.am header.i=@beldev.am header.b=1s1Uznkl; arc=none smtp.client-ip=2.56.206.6 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=beldev.am Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=beldev.am Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=beldev.am header.i=@beldev.am header.b="1s1Uznkl" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=beldev.am; s=default; h=Content-Transfer-Encoding:Content-Type:Message-ID:References: In-Reply-To:Subject:Cc:To:From:Date:MIME-Version:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=T72k/24DD9l/9ol7Qak+3wwHRfLCHCmxeIZJ1DWlpls=; b=1s1Uznklw5dmbDf15DWYF8RdUL wpbmNH/6slW94Tb0jqJvMMp2+Ii4BgM8VM+1P872CZnjYAkNgx8oEu2e0WdaxLsOTfMFG+0DDhMAV UqhqFTmxBE0i0698VaXxvXQ6oBxDz6K+p6IuS843pQKfD7Mw4tGEBett9bAbby/7tH9faAgoh0n2L tIQWBaVxT3t2NAlv69aBrLeKuABYDh/HQ6FFruiwAHOorg6OA5wKrjo1cigwdOoLAjqtTgzw7s+SY ygPJS4Suias6SmgxYpcDfpEi+EmmYFKm0p67IcaWiJm2wW7xgbfEZufYnsHZDJZsuiga6uOysPJqP O+dFgeMA==; Received: from [::1] (port=53900 helo=server4.hayhost.am) by server4.hayhost.am with esmtpa (Exim 4.98.1) (envelope-from ) id 1u1pa7-000000006MP-1ay0; Mon, 07 Apr 2025 20:44:19 +0400 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Mon, 07 Apr 2025 20:44:17 +0400 From: Igor Belousov To: Nhat Pham Cc: vitaly.wool@konsulko.se, Johannes Weiner , linux-mm@kvack.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Shakeel Butt Subject: Re: [PATCH v2] mm: add zblock allocator In-Reply-To: References: <1743810988579.7.125720@webmail-backend-production-7b88b644bb-5mmj8> <0dbbbe9d17ed489d4a7dbe12026fc6fd@beldev.am> User-Agent: Roundcube Webmail/1.6.9 Message-ID: X-Sender: igor.b@beldev.am Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server4.hayhost.am X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - beldev.am X-Get-Message-Sender-Via: server4.hayhost.am: authenticated_id: igor.b@beldev.am X-Authenticated-Sender: server4.hayhost.am: igor.b@beldev.am Hi Nhat, 2025-04-07 19:51 skrev Nhat Pham: > On Mon, Apr 7, 2025 at 2:00 AM Igor Belousov wrote: >> >> >> >>> Do you have zswap/zswapped meminfo metrics from these tests? >> >> Yep, and those look somewhat similar: >> >> - zblock: >> >> Zswap: 234128 kB >> >> Zswapped: 733216 kB >> >> - zsmalloc: >> >> Zswap: 286080 kB >> >> Zswapped: 774688 kB >> > >> > I tested the kernel build on a 4-core virtual machine with allocated 4 >> > GB RAM running on a Ryzen 9. >> > >> > The results are the following: >> [...] >> >> Now what's funny is that when I tried to compare how 32 threaded build >> would behave on a 8-core VM I couldn't do it because it OOMs with >> zsmalloc as zswap backend. With zblock it doesn't, though, and the >> results are: >> real 12m14.012s >> user 39m37.777s >> sys 14m6.923s >> Zswap: 440148 kB >> Zswapped: 924452 kB >> zswpin 594812 >> zswpout 2802454 >> zswpwb 10878 >> >> /Igor > > May I ask what compression algorithm you are using? It's LZ4 for all the test runs. > And does the zswpwb come from zswap shrinker? Haven't looked into that, to be honest. /Igor