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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 2C9FDC4332F for ; Tue, 15 Nov 2022 00:38:10 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ouinv-0008Fk-Sg; Mon, 14 Nov 2022 18:23:51 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ouifP-0004Ov-EU for qemu-devel@nongnu.org; Mon, 14 Nov 2022 18:15:04 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ouZQA-00032w-Dv for qemu-devel@nongnu.org; Mon, 14 Nov 2022 08:22:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1668432161; h=from:from:reply-to:reply-to:subject:subject: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=ggU7ROD3uze+obD6Evc+BZ9Q8vSRZwQSlBWi3YzJ5Uc=; b=JjNPRxZRWB5CgF4FjvrsXmIy42u4o0LuuKlZs7fAKnW55Z5JwaS6NBkiI1ENxizt8t89GD wWBN1b1YFOkrF57FxMd2UKwjMs1fcLj6HSYfqVl1rQvnBxmOlYBtQDhATvRutm484O+VZl sDm2JIT6aLlapS7loZG7soqqVmT4D/M= Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-662-iiYHfjTXMEqzq40KBZTw4Q-1; Mon, 14 Nov 2022 08:22:39 -0500 X-MC-Unique: iiYHfjTXMEqzq40KBZTw4Q-1 Received: by mail-wr1-f72.google.com with SMTP id i14-20020adfa50e000000b0023652707418so1998196wrb.20 for ; Mon, 14 Nov 2022 05:22:39 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:message-id:date:reply-to:user-agent:references :in-reply-to:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ggU7ROD3uze+obD6Evc+BZ9Q8vSRZwQSlBWi3YzJ5Uc=; b=DT5A1K9p2OOVUv+xG/U2OaagknjsASxmNyE+RKkk5g6JQukwNT/+PKLDDdJNF3yjEq FjcbLAwSkxY29Ris6lTolZWKE16ArJYutsXLNNK3CnaBvN88o4Vazlk3vmDwHx6Prq5b aLp+dThJd0I7PNv1yS6G6rM26iE9EQnijWtwGEPVJ80KejYMh0P7XA5teNJQImsXeKi+ u3BqRvcNNhPW00eJ2aN67uGeqkxfESp29RCF7rkeO3C+pQdVK0/f41/GHyNfJME6RDcM Dpi9jiiNIlD/cjfrDVPQkLluiYNnULM/TYkJcerN5v8CLHyNld3y/A41buZeOd1kn8Mt NdYA== X-Gm-Message-State: ANoB5pmPPhBb7nwLS2TfZQJL6z/sqzNAQlIapzGBTKHO0Iq+DjXU6+9P oO7p4XM6ZCQL6hujCmZPkcPU/Y6ELr524mDy3/TZk8Azh5erb3SQotx8WM+L9U0Wb9+/QgstgeG wFX74BSdDZXJkjfs= X-Received: by 2002:adf:dcd1:0:b0:236:9bad:405f with SMTP id x17-20020adfdcd1000000b002369bad405fmr7469343wrm.533.1668432158678; Mon, 14 Nov 2022 05:22:38 -0800 (PST) X-Google-Smtp-Source: AA0mqf5stXfG2VC1TOxqzAyruXKkvFkxrgjWVZo2QQs/4DMfgfy47vHlLfkXVRh2Yna4fbv2HoAslg== X-Received: by 2002:adf:dcd1:0:b0:236:9bad:405f with SMTP id x17-20020adfdcd1000000b002369bad405fmr7469315wrm.533.1668432158389; Mon, 14 Nov 2022 05:22:38 -0800 (PST) Received: from localhost ([31.4.176.155]) by smtp.gmail.com with ESMTPSA id v11-20020adfebcb000000b00241968f757esm1102097wrn.80.2022.11.14.05.22.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Nov 2022 05:22:37 -0800 (PST) From: Juan Quintela To: ling xu Cc: qemu-devel@nongnu.org, dgilbert@redhat.com, Zhou Zhao , Jun Jin Subject: Re: [PATCH v6 1/2] Update AVX512 support for xbzrle_encode_buffer In-Reply-To: <20220826095719.2887535-2-ling1.xu@intel.com> (ling xu's message of "Fri, 26 Aug 2022 17:57:18 +0800") References: <20220826095719.2887535-1-ling1.xu@intel.com> <20220826095719.2887535-2-ling1.xu@intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) Date: Mon, 14 Nov 2022 14:22:25 +0100 Message-ID: <87mt8t4qni.fsf@secure.mitica> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=170.10.133.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: quintela@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org ling xu wrote: > This commit updates code of avx512 support for xbzrle_encode_buffer > function to accelerate xbzrle encoding speed. Runtime check of avx512 > support and benchmark for this feature are added. Compared with C > version of xbzrle_encode_buffer function, avx512 version can achieve > 50%-70% performance improvement on benchmarking. In addition, if dirty > data is randomly located in 4K page, the avx512 version can achieve > almost 140% performance gain. > > Signed-off-by: ling xu > Co-authored-by: Zhou Zhao > Co-authored-by: Jun Jin Reviewed-by: Juan Quintela queued.