From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <dev-bounces@dpdk.org>
Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124])
by inbox.dpdk.org (Postfix) with ESMTP id A468FA00C5;
Wed, 16 Feb 2022 17:08:29 +0100 (CET)
Received: from [217.70.189.124] (localhost [127.0.0.1])
by mails.dpdk.org (Postfix) with ESMTP id 9670941169;
Wed, 16 Feb 2022 17:08:29 +0100 (CET)
Received: from mga14.intel.com (mga14.intel.com [192.55.52.115])
by mails.dpdk.org (Postfix) with ESMTP id F3ADF40150;
Wed, 16 Feb 2022 17:08:27 +0100 (CET)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple;
d=intel.com; i=@intel.com; q=dns/txt; s=Intel;
t=1645027708; x=1676563708;
h=from:to:cc:subject:date:message-id:in-reply-to:
references:mime-version:content-transfer-encoding;
bh=3ENkEFvJhg0TDFwKtY5RLQGlBw6dmvox33aQ85eDMf8=;
b=YaWYzpfPQ5smhM2tnA8e2UTki1IBgJy4nOnM0TZky7/WVxOwPZC5p8dy
74YZa7edGltDCujEgUD9Gwm8P3NFtCLCeczKumtloIrE0xxfkf+Z3wJAG
jrLQ69laGc6PrCu+/82JVGN3PaM41xC9h/ziqLgr0M99EF49+GZ4XlYSV
/ZHcK7v0GyOe/BcXqWb+nHxEb9FFAXwaXqY41Pd6d93fOxcKm+pdMmQbp
SknFtziZ8uRlR2NpSopEerzFUvmwvlEbeIHgRcQCipTXrLy1X5X9H8LWE
vEHvPFsNZPjvFKTrSgRZUsslBleSdMZ9jn9H0qndtB53NqaeggMdjtfvL A==;
X-IronPort-AV: E=McAfee;i="6200,9189,10260"; a="250853269"
X-IronPort-AV: E=Sophos;i="5.88,374,1635231600"; d="scan'208";a="250853269"
Received: from orsmga005.jf.intel.com ([10.7.209.41])
by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;
16 Feb 2022 08:06:39 -0800
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.88,374,1635231600"; d="scan'208";a="704363259"
Received: from silpixa00401026.ir.intel.com ([10.243.22.62])
by orsmga005.jf.intel.com with ESMTP; 16 Feb 2022 08:06:37 -0800
From: Bruce Richardson <bruce.richardson@intel.com>
To: dev@dpdk.org
Cc: Bruce Richardson <bruce.richardson@intel.com>, stable@dpdk.org,
Kevin Laatz <kevin.laatz@intel.com>
Subject: [PATCH 2/3] dma/idxd: configure max batch size to high value
Date: Wed, 16 Feb 2022 16:06:08 +0000
Message-Id: <20220216160610.475242-3-bruce.richardson@intel.com>
X-Mailer: git-send-email 2.32.0
In-Reply-To: <20220216160610.475242-1-bruce.richardson@intel.com>
References: <20220216160610.475242-1-bruce.richardson@intel.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
<mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
<mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
When configuring an Intel DSA instance using the utility script
dpdk_idxd_cfg.py, explicitly set the max supported batch size value to a
high value, to ensure large bursts are supported if so desired. The
default in the linux kernel is now just 32 [1], which may not be
sufficient for all DPDK apps.
[1] https://lore.kernel.org/r/163528473483.3926048.7950067926287180976.stgit@djiang5-desk3.ch.intel.com
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
Note: although not fixing a bug in DPDK itself, due to kernel changes
this patch should be considered for backport as a fix, so cc'ing stable.
---
drivers/dma/idxd/dpdk_idxd_cfg.py | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma/idxd/dpdk_idxd_cfg.py b/drivers/dma/idxd/dpdk_idxd_cfg.py
index 34537cb980..3f5d5ee752 100755
--- a/drivers/dma/idxd/dpdk_idxd_cfg.py
+++ b/drivers/dma/idxd/dpdk_idxd_cfg.py
@@ -89,6 +89,7 @@ def configure_dsa(dsa_id, queues, prefix):
"mode": "dedicated",
"name": f"{prefix}_wq{dsa_id}.{q}",
"priority": 1,
+ "max_batch_size": 1024,
"size": int(max_work_queues_size / nb_queues)})
# enable device and then queues
--
2.32.0