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[83.59.160.93]) by smtp.gmail.com with ESMTPSA id s72sm3545069wme.35.2020.06.18.05.26.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 18 Jun 2020 05:26:46 -0700 (PDT) Subject: Re: [PATCH 0/7] misc: Reduce QEMUTimer pressure by using lower precision when possible To: Paolo Bonzini , qemu-devel@nongnu.org References: <20200616075121.12837-1-f4bug@amsat.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: Date: Thu, 18 Jun 2020 14:26:45 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::442; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wr1-x442.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: 0 X-Spam_score: 0.0 X-Spam_bar: / X-Spam_report: (0.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=1, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , qemu-block@nongnu.org, Corey Minyard , David Hildenbrand , Andrew Jeffery , "Michael S. Tsirkin" , Max Reitz , qemu-arm@nongnu.org, Joel Stanley , =?UTF-8?Q?C=c3=a9dric_Le_Goater?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 6/18/20 2:23 PM, Paolo Bonzini wrote: > On 16/06/20 09:51, Philippe Mathieu-Daudé wrote: >> This series contains few patches resulting from the notes I >> took while reviewing Mark ADB series last Sunday, in particular: >> https://www.mail-archive.com/qemu-devel@nongnu.org/msg712078.html >> >> I have another patch for hw/input/hid.c but I prefer to hold it >> to test it more. > > This is in principle a very good idea; however, util/qemu-timer.c does > not use the scale to coalesce low-precision timers with nearby > high-precision ones. IOW this doesn't reduce the pressure, but simply makes the code easier? Only the cover mentions 'pressure', so maybe the patches can still be reviewed/queued in their current state?