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[37.6.161.104]) by smtp.gmail.com with ESMTPSA id d15-20020a5d644f000000b0031aef72a021sm5697273wrw.86.2023.08.20.23.14.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 20 Aug 2023 23:14:29 -0700 (PDT) Date: Mon, 21 Aug 2023 09:10:33 +0300 From: Manos Pitsidianakis To: Volker R=?UTF-8?B?w7w=?= melin , qemu-devel@nongnu.org Cc: Igor Skalkin , Anton Yakovlev , Paolo Bonzini , Gerd Hoffmann , "ichael S. Tsirkin" , "Daniel P. Berrang=?UTF-8?B?w6k=?= " , Marc-Andr=?UTF-8?B?w6kg?=Lureau , Alex Benn=?UTF-8?B?w6k=?= e , Philippe Mathieu-Daud=?UTF-8?B?w6kg?= Subject: Re: [PATCH v6 00/12] Add VIRTIO sound card User-Agent: meli 0.7.3 References: <7d4e70f5-c930-e665-c0b0-44e3d8831743@t-online.de> In-Reply-To: <7d4e70f5-c930-e665-c0b0-44e3d8831743@t-online.de> Message-ID: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=utf-8; format=flowed Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-wr1-x433.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hello Volker, On Sun, 20 Aug 2023 14:46, Volker Rümelin wrote: >I tested the virtio-sound-pci device. It seems the device works >unreliably. Audio playback has a lot of dropouts. I can actually hear >my mouse moving around. Audio recording with audacity doesn't work. >Either recording stops with an error or the recorded stream is silent. > >I'll see if I can change the code so audio playback works reliably. I >don't think it makes sense to review the current code as it is. I will >of course report any issues I find. have you been having this bad performance with pulseaudio/pipewire? Are you using alsa for playback/recording in the guest? I am asking because this was my setup and I was wondering if it affected the code I ended up with. For me I had normal playback, except for a short delay at first (maybe something to do with alsa buffer lengths, I am not familiar with ALSA much). If you can share your guest and host setup you used for this I can try replicating it. Manos