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From: "Phil Yang (Arm Technology China)" <Phil.Yang@arm.com>
To: "konstantin.ananyev@intel.com" <konstantin.ananyev@intel.com>,
	"wenzhuo.lu@intel.com" <wenzhuo.lu@intel.com>
Cc: "Ruifeng Wang (Arm Technology China)" <Ruifeng.Wang@arm.com>,
	"Gavin Hu (Arm Technology China)" <Gavin.Hu@arm.com>,
	Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
	"Song Zhu (Arm Technology China)" <Song.Zhu@arm.com>,
	"dev@dpdk.org" <dev@dpdk.org>, nd <nd@arm.com>, nd <nd@arm.com>
Subject: [dpdk-dev] Why DCA got removed in ixgbe  PMD?
Date: Mon, 23 Sep 2019 09:36:48 +0000	[thread overview]
Message-ID: <VE1PR08MB464092774C667C743296388FE9850@VE1PR08MB4640.eurprd08.prod.outlook.com> (raw)

Hi, Konstantin & WenZhuo

The ixgbe kernel driver supports DCA (Direct Cache Access) mode to improve IO performance on IA.  [ixgbe: Add optional DCA infrastructure<https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bd0362dde080cef377d99fa5beb5c25308c29c73>]
DPDK ixgbe PMD contains some DCA flags in the header files but has no implementation on this mechanism.
https://git.dpdk.org/dpdk/tree/drivers/net/ixgbe/base/ixgbe_type.h   [at line 1470]

So why DCA feature got removed in ixgbe PMD?
Is it replaced by any other L2 cache warm technology on x86 DPDK?

Thanks in advance.

Best Regards,
Phil Yang


                 reply	other threads:[~2019-09-23  9:37 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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