From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id B1481A0032 for ; Fri, 24 Jun 2022 11:43:39 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 8844E40A87; Fri, 24 Jun 2022 11:43:39 +0200 (CEST) Received: from mail-oa1-f50.google.com (mail-oa1-f50.google.com [209.85.160.50]) by mails.dpdk.org (Postfix) with ESMTP id B0F254069D for ; Fri, 24 Jun 2022 11:43:37 +0200 (CEST) Received: by mail-oa1-f50.google.com with SMTP id 586e51a60fabf-101ab23ff3fso3101188fac.1 for ; Fri, 24 Jun 2022 02:43:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=k6C6Bg+6LiRtESWngiJ6ch9ICSwXVcfF1m5hKN0jBwM=; b=SQDWVxBXkGvdtH/a++ANdPPtNWpBenaV+9xM0BvKA7DyXkWvTc3iA7jPtbupEMGmQj ILpLwYBkRdFYBAumQe9aQTeQhd7zD5Y6k9BUHUwVRn5npjH8D2n8DseLRChr1rhnfNpR Knn1QjLBv1Sc2v6dKMz3f8rygcTuG+hxyhEyr6X84rD6OvIj3UBr4n9wYKKUllieimPu JPVOwJ5GAPTJdqyeEvn/ZnDgpnsE2rnIgk/OpNvei7GvFy96qMeLvBHehI616mkz6cHN BKvmc7Fjpfpb0m5N/QPR14H5oWsqDDE47lYpVBl5lfWFCjb2vtEsJj2kzFihS0qt6xhS 45Zw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=k6C6Bg+6LiRtESWngiJ6ch9ICSwXVcfF1m5hKN0jBwM=; b=pJLutoEQ7+cBejhyafGik83a2v7IMBU1IS7vjvTo55iHZv9VO1Pf2kQdO3EkWKngzs v8daRXLdZRVkWyzEG+5p9sIzLlTYg7w2KCkkJN4acAyei5NnB27qe3GpufmsHd7rbtQ+ LnXNGgzxXCvcJNKtEoRw/1HWTOakf9bJ0GkhZhe9hiM3t/yQMxMib7q7d6GKYVa75wF2 WHI8ZGCaSc3lHMt5finlT/m4vu7N5KBEfPBNxW5ItXYITvcLAiBc9HXWYBVlJx2AmDAK qCuypMl+gny1cXiOm7Gxa72Cad79Mv8iekmACObyEiR1XtpH2hyb1jAjWxKf6CsnxKny c/mw== X-Gm-Message-State: AJIora9mlGzS491stvTZi79BO/Rns1zYApo5evuPdNpI1YADCYo47Woz DDf7lF4y7u6Q36fwOLO783CT8KP5JjXxoo8dxBE= X-Google-Smtp-Source: AGRyM1v60gGtBhZ/5HFovIa/ARku6yLiBgFaRKlS/Mxg4qXvb+yGLh7W1k2LI4wnX7Krumj8T4xf3xGU3o/CA44jEFE= X-Received: by 2002:a05:6870:8e1b:b0:108:561a:79be with SMTP id lw27-20020a0568708e1b00b00108561a79bemr339090oab.243.1656063817013; Fri, 24 Jun 2022 02:43:37 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Antonio Di Bacco Date: Fri, 24 Jun 2022 11:43:26 +0200 Message-ID: Subject: Re: Large interruptions for EAL thread running on isol core To: Omer Yamac Cc: users@dpdk.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Yes, Hyperthreading is disabled. On Thu, Jun 23, 2022 at 8:07 PM Omer Yamac wrote: > > Hi Antonio, > > Did you try to disable logical cores on CPU? > > On 23.06.2022 21:03, Antonio Di Bacco wrote: > > I'm running a DPDK thread on an isolated core. I also set some flags > > that could help keeping the core at rest on linux like: nosoftlockup > > nohz_full rcu_nocbs irqaffinity. > > > > Unfortunately the thread gets some interruptions that stop the thread > > for about 20-30 micro seconds. This seems smal but my application > > suffers a lot. > > > > I also tried to use rte_thread_set_priority that indeed has a strong > > effect but unfortunately creates problems to Linux (like network not > > working). > > > > Is there any other knob that could help running the DPDK thread with > > minimum or no interruptions at all?