From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 74C02A0613 for ; Thu, 26 Sep 2019 07:17:52 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 5C7302C4F; Thu, 26 Sep 2019 07:17:52 +0200 (CEST) Received: from mail-pg1-f173.google.com (mail-pg1-f173.google.com [209.85.215.173]) by dpdk.org (Postfix) with ESMTP id D3CAA2C37 for ; Thu, 26 Sep 2019 07:17:50 +0200 (CEST) Received: by mail-pg1-f173.google.com with SMTP id x10so834745pgi.5 for ; Wed, 25 Sep 2019 22:17:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=tO0vh5m+vKJG+DqVQESUw+EbVlFFjt+IPqR9zXDvpQk=; b=g8/Ag6dKvq1c5tXvKYBFR76BHfwBShOhMzqoce7Zyjg2TSsrTiwSlBMqCB9bEQLv2P LQF45PWDZh3lRFtl5fSfnmNRHcSV9LYEefDVDjYVQOtTMkzxmxb2WGO+Dw/0o7SWtz2f vpYS3Pb5gPpfa5g4B2CwiJ8ww6UWsdKgiNG/uXP+MFdYusbVpQ+VmOORVoLn3Y7SMguR +vOQdNVgEYolfXuwBgrcuM+QcF/ez2fGyL/A/Xa0Q/oZc3Cw0ObGmUSFHko5UzujRDLl JkaQOdQBZPYCyMULda3bbcudFQ029Ml8x+tEYI4fEL/Jg9T0Sr4yGSOdc55oDO2NXeAZ UyXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=tO0vh5m+vKJG+DqVQESUw+EbVlFFjt+IPqR9zXDvpQk=; b=ZxZhggReBUHnOtQ5gKjf9CvUssvpa8ufp1Ehh3HBbCLTx88tlgzzulL27wZ4w9SJVi hWh3cC59zBQkuv9YOGrfpsgaK7DqSTkIoQ4TL75OaZAggSs4VC6S7qaO9JoecFj22s3V eVEOaAg+eTMt8928Rr+ox5AkjgY8VshSm1PvdMV4wyuR7VmBJtBgCQPOtIgwQSmU452a 2J91dKwq+BuG+dNZ3vRyTo63kZAEpimlg2GM89fqynt/xULRO2KxrXjYNLxpFYoOE5xj RDzvUqoJwfJ63aRTHYZD3FhOCvubtM9/J1lRcV8kNsejKh7ioCL2Ds/d0FSuO0ScnD6e J2rw== X-Gm-Message-State: APjAAAURURSi8EoUidGzo93hxSzCNnqLBRGy2YYL8a/4BeX2PCzv9d82 mIeLJigdfN8iPv3/++z/T3pUsUW+nSg= X-Google-Smtp-Source: APXvYqzFPGPRgSKm86O6do83JOgMMcE+iKRcgO73AFE111scEwUTLGsSx8xVmT/FGzVUuDwyf3HbMg== X-Received: by 2002:a17:90b:946:: with SMTP id dw6mr1598321pjb.48.1569475069782; Wed, 25 Sep 2019 22:17:49 -0700 (PDT) Received: from hermes.lan (204-195-22-127.wavecable.com. [204.195.22.127]) by smtp.gmail.com with ESMTPSA id x20sm798576pfp.120.2019.09.25.22.17.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Sep 2019 22:17:49 -0700 (PDT) Date: Wed, 25 Sep 2019 22:17:48 -0700 From: Stephen Hemminger To: Dheeraj Dang Cc: users@dpdk.org Message-ID: <20190925221748.1d53073c@hermes.lan> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-users] Strange Packet Loss with number of flows. 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: , Errors-To: users-bounces@dpdk.org Sender: "users" On Thu, 26 Sep 2019 10:10:25 +0530 Dheeraj Dang wrote: > Hi, > > I am having a problem with packet loss and I hope you can help me out. > When we increase the number of flows, PPM value must increase. I observed > this behavior to some point, but after that PPM value reduces. Below you > find the description of application, workload, and observations. > > *Application* > I have a server-client application, a single server, and single client. > Both machines are using multiple queues to send or receive packets. > > > *Workload* > I'm running dpdk with fixed PPS value i.e 2 Mpps. > I'm increasing the number of flows to see the impact on PPM value. > I'm changing UDP port range to generate the number of flows. > > > *Observations* > Target MPPS Flows PPM > 2 2 100 > 2 100 670 > 2 1000 3136 > 2 5000 265878 > 2 10000 106316 > *I was expecting PPM value to rise for 10K flows, but its value reduces.* > Please share your suggestions. > > Regards > Dheeraj Dang What DPDK version? What OS? What hardware? Did you look at xstats in DPDK?