From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vs1-f53.google.com (mail-vs1-f53.google.com [209.85.217.53]) by dpdk.org (Postfix) with ESMTP id 4BE9D1B1EA for ; Wed, 30 Jan 2019 08:05:19 +0100 (CET) Received: by mail-vs1-f53.google.com with SMTP id z3so13615045vsf.7 for ; Tue, 29 Jan 2019 23:05:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=imvisiontech-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=EGeMD9CD8ZKkB4uiQmCxRvfGkiu+6jx1+/dE13Se+KM=; b=hXXqf38uv7F6CURkkw9M8tdkRG3SWJIqD0UDu1bGcRVzzAUx/EuC62da3CHgNjXV5J S6PlRYIAPoSX8cwwI0ya2feBo5tCeIzMAm2ChNTlyf4DWIt/IywcFTMErOHwkw1a6XA2 yHVkUeovu21ZU5h35CevYcffhEnmkvZxQDNV2uRQUZFNCu3LfSiQxypMqtJ/fmGMN3DT ZXNJ5Hw33Emx1KXQmnW3aazavSzWyylye4NJvBiLEuvcIZa2bKPuKOsN08vHXrJFF44q ELfaISRwAnsqoeHIiSQyUpXgFNV8DEAWZYk7pHhxslN8tasvWLHzl1SQGayZnpvDg5wv UGCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=EGeMD9CD8ZKkB4uiQmCxRvfGkiu+6jx1+/dE13Se+KM=; b=Az7R82C9Fhoz3w028NsiZDzVW7jZij72MTZ7e9QGLVWcGzn3+e0pcu2+PF3csyMXi1 O8apynxoEWfOCG+gNcGplvW0WKOYbyix7vNrWPkSPsIzwefhk9+Ge0OB/1xxsO4okb+g l3yTzHuOyhNFzJbLcLw80eWzKWGbZAo1PxwjVOwlqLjrfGIQ245GhAEGGO1WtX7t4dOf j9hdswlLj3IKHI+XEg/wEwC6nsiU1/QEYQa4WS3OHrTyOE6xR74dNtPtd8TzDDYWymr3 2C6kOpRuSM8adcqNof2ls2Rj34gL937RZl7AH7ct7/Un0yK5vaEh271GgiOjqdWDYot7 N4eQ== X-Gm-Message-State: AJcUukejhy9c6MnMER0TN2/T6rh3/d7g7wCrU4pj6mgk9uWVH31PqEHN b5+2M6AIiCFE/7pUXXEWwdbw8hvbuJnqw7yRWTu5CA== X-Google-Smtp-Source: ALg8bN495k/X8tvJZ9er9eFN8rZsOOJVHEwFRQ+htJ8+5f2jwsFo6DX8tl7Lv4CdcVTTI9/wwXqZMSFIOzaiO4F6vM0= X-Received: by 2002:a67:a858:: with SMTP id r85mr11687609vse.215.1548831918681; Tue, 29 Jan 2019 23:05:18 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Shirley Avishour Date: Wed, 30 Jan 2019 09:05:06 +0200 Message-ID: To: Rami Rosen Cc: dev@dpdk.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: Re: [dpdk-dev] running dpdk application on the same machine with other none dpdk application X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jan 2019 07:05:19 -0000 Hi Rami, This is the printout for cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.15.0-43-generic root=UUID=6f1a210b-a30f-456d-bf16-bbb210da5666 ro default_hugepagesz=2M hugepagesz=2M hugepages=4096 isolcpus=1-5 nohz_full=1-5 rcu_nocbs=1-5 The requires cpus are in fact isolated but jvm generate some kernel threads as well and I'm afraid that these kernel space threads eventually use all cores. isolcpus is not applies on kernel space threads. Shirley. On Wed, Jan 30, 2019 at 8:57 AM Rami Rosen wrote: > Hi Shirley, > >Running java based applications on the same server with a dpdk based > application has an impact on the dpdk performance. > Probably since the JVM generates kernel based processes. I > > This is true, but as far as I know, using isolcpus should prevent these > processes to run on the isolated cores. > > Just to be on the safe side: did you make sure with cat /proc/cmdline on > the kernel you are actually running indeed > has the "isolcpus=1-5" you added in grub ? sometimes, especially in multi > OS hosts, adding entries in /etc/default/grub and running grub2-mkconfig is > not enough, if you boot from a different partition. > > Regards, > Rami Rosen > > >