From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f48.google.com (mail-lf0-f48.google.com [209.85.215.48]) by dpdk.org (Postfix) with ESMTP id 2EA544C7F for ; Wed, 28 Feb 2018 06:03:32 +0100 (CET) Received: by mail-lf0-f48.google.com with SMTP id t204so1588320lff.9 for ; Tue, 27 Feb 2018 21:03:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yale.edu; s=googleprd; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=eN64fyRVyrMPfURi3FySSuzsmZOCDAo3cgEycEsVA8w=; b=XLoOe2279bwB3kC+1X2hR6E0QseELNBRIJFF1BIDkZHWVvocxc+NvVZ3G8G4Gd8uWm JfNDbo0+wMDhhQKzSubZmlf7ZsVg2NZGVhX/zL0x/AmYJAtTVT2eVCBfuxkS7rpe/T65 BieuGSK/NsN2bsqxQTUKmMW9D3ThAJFqR2eBE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=eN64fyRVyrMPfURi3FySSuzsmZOCDAo3cgEycEsVA8w=; b=RzpWfpTHZ2rgX8kTFUSscH1pUzD1ubTUi3ulqJUN6YUsPHzkM6ofg0Ae6ECm2mCpfz abnHmkRMCzx0/Yc4QsSaHIWDompM6HR2JtpBM9u1kCi8ndWvZEMfosbULadxvXRjK7X+ 7MIbQLtSJ3qdm3UIFrbxWIqGH2myHCIJEGUH+WMgEJ18c5JsAtSpSgYG2M1ohlWW9L0j b2IM+FF2H1CJfdM/uEYjdJVfP/dm+ug5jpWUJeAC96hFmzLuxkW3T2X4a/JXx3zXB5+C KV91QQ58oY1cxT7map0OrPLX6p8tPmhHwr9t2w7KyomJYivZ9uGaaSjUWGujdeGVrTNg J9pw== X-Gm-Message-State: APf1xPAGHYXEQmjFiRaYhQ9EFBkd1SlAU0D88DdEnCEF4daJMMQGzjJV mxMFI5K5UXQ1fk113pMLxEqoxGKkMzc+21enjFuYpg== X-Google-Smtp-Source: AH8x226/Ut7NiJWUOyoWiMTTzR2iQBfb1fsBCR0W6gbwtzY8ExLhMMOgBW9m+HYW6rEhlPbdfB0zlZAd+C/9A6XIsI4= X-Received: by 10.46.84.5 with SMTP id i5mr11580681ljb.83.1519794211444; Tue, 27 Feb 2018 21:03:31 -0800 (PST) MIME-Version: 1.0 Received: by 10.25.27.17 with HTTP; Tue, 27 Feb 2018 21:03:30 -0800 (PST) In-Reply-To: References: From: Yuliang Li Date: Wed, 28 Feb 2018 00:03:30 -0500 Message-ID: To: users@dpdk.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: Re: [dpdk-users] occasionally ~300us delay X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Feb 2018 05:03:32 -0000 Also, such pause happens regularly--every 0.5s. On Wed, Feb 28, 2018 at 12:01 AM, Yuliang Li wrote: > Hi all, > > I am using dpdk to generate packets. Specifically, I have a list of > , meaning I want to send Pi at Ti. I wait for Ti by while > (rte_get_tsc_cycles() 300us of sending packets, i.e., the sending time of some Pi is around > Ti+300us. It looks like the program just pauses by 300us, and then resumes. > Does anyone know why? > > Thanks, > -- > Yuliang Li > PhD student > Department of Computer Science > Yale University > -- Yuliang Li PhD student Department of Computer Science Yale University