From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f53.google.com (mail-pa0-f53.google.com [209.85.220.53]) by dpdk.org (Postfix) with ESMTP id 03F3591AB for ; Tue, 26 Jan 2016 03:58:44 +0100 (CET) Received: by mail-pa0-f53.google.com with SMTP id cy9so90816381pac.0 for ; Mon, 25 Jan 2016 18:58:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=igel-co-jp.20150623.gappssmtp.com; s=20150623; h=subject:to:references:cc:from:message-id:date:user-agent :mime-version:in-reply-to:content-type:content-transfer-encoding; bh=hY4Dyl/4vjQ3mulyKvZkF1EgntodpRoGkoucw1yDYsY=; b=Kg+OZuKymBpQYN5PoRUHl6YZkP61PjCkQH5T7KtkhHKjW1aCGwv+ra+8rBFSrA0daz Qt6dBNjkm35gUb/fAoA05UsVDtn909day2wjl430UNQvmxY2UIgee0AXRh+pglgQWp+e tXty5VaD0Z5az3cDSK33/5VBjXou7ZBrs2f2QYUWRmAafynWpU2UaWZpvXmo3BYNIzrE /xYtR5oWlRjwo48IKLJTb2fR1g/HwQlOaiFKsL52gKCBkFC3QKM2xlfzLs3wJr1AOz78 69CyGotsrwVUf0KbbET4/ptmMDtIvZ01KZsvy0XXfF7UYcN9hv4mTfG0Ov78X5jLA7GV D2cA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-type :content-transfer-encoding; bh=hY4Dyl/4vjQ3mulyKvZkF1EgntodpRoGkoucw1yDYsY=; b=Rkda4EHFQfsC+KGANq9axyIziIoAL2kGdSpdoric27bsmgbojX//OigEikJ93YQV35 IwMgBF1PH9FP3kdo4R6kIOAVwyiW8akVy1oJjHAVa+yUH1tdZBZIHdd12FPuSMYcQJzd qZof6r1NwrPigBLq3FPbLcr9vi/EsKBLcZ49eyQqvYm0ewbM5FSR0w5SBajgMj//QvgZ q6AUCAHhdkJ8HoCxEpeZn7pt7p3nb44UxLirdWIG1YSbkf4pVIsru9PYmVjdCfGgmV05 cuPIDpdlcGVXV70ytci4tK3Yzwv+QGi6wi2cCzTuqf0OU+VsMxsAIaYnljHY5/1XRiQ7 Aj+A== X-Gm-Message-State: AG10YOS9aFd4np8FUlXMDBVlQHFWyw2VEeJuqXSzPlMh6VTkPuPYDEfXwz04+WZnVYDL4g== X-Received: by 10.66.122.142 with SMTP id ls14mr30566921pab.113.1453777123454; Mon, 25 Jan 2016 18:58:43 -0800 (PST) Received: from [10.16.129.101] (napt.igel.co.jp. [219.106.231.132]) by smtp.googlemail.com with ESMTPSA id r5sm31749647pap.7.2016.01.25.18.58.41 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 25 Jan 2016 18:58:42 -0800 (PST) To: "Xie, Huawei" , "dev@dpdk.org" , "yuanhan.liu@linux.intel.com" , "Tan, Jianfeng" References: <1453108389-21006-2-git-send-email-mukawa@igel.co.jp> <1453374478-30996-6-git-send-email-mukawa@igel.co.jp> From: Tetsuya Mukawa X-Enigmail-Draft-Status: N1110 Message-ID: <56A6E0DF.9010800@igel.co.jp> Date: Tue, 26 Jan 2016 11:58:39 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [RFC PATCH 5/5] virtio: Extend virtio-net PMD to support container environment X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Jan 2016 02:58:44 -0000 On 2016/01/25 19:17, Xie, Huawei wrote: > On 1/21/2016 7:09 PM, Tetsuya Mukawa wrote: >> +static void >> +qtest_handle_one_message(struct qtest_session *s, char *buf) >> +{ >> + int ret; >> + >> + if (strncmp(buf, interrupt_message, strlen(interrupt_message)) == 0) { >> + if (rte_atomic16_read(&s->enable_intr) == 0) >> + return; >> + >> + /* relay interrupt to pipe */ >> + ret = write(s->irqfds.writefd, "1", 1); > How about the interrupt latency? Seems it is quite long. Yes, I agree with it. Probably using evetfd or removing this read/write mechanism to handle interrupts will be nice. Let me check it more. Tetsuya