From: Bjorn Helgaas <helgaas@kernel.org>
To: Wei Huang <wei.huang2@amd.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, netdev@vger.kernel.org,
Jonathan.Cameron@huawei.com, corbet@lwn.net, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
alex.williamson@redhat.com, gospo@broadcom.com,
michael.chan@broadcom.com, ajit.khaparde@broadcom.com,
somnath.kotur@broadcom.com, andrew.gospodarek@broadcom.com,
manoj.panicker2@amd.com, Eric.VanTassell@amd.com,
vadim.fedorenko@linux.dev, horms@kernel.org,
bagasdotme@gmail.com, bhelgaas@google.com
Subject: Re: [PATCH V3 09/10] bnxt_en: Add TPH support in BNXT driver
Date: Fri, 2 Aug 2024 12:00:06 -0500 [thread overview]
Message-ID: <20240802170006.GA154301@bhelgaas> (raw)
In-Reply-To: <91a50d58-f9b3-4003-b694-6829c9bcb0a2@amd.com>
On Fri, Aug 02, 2024 at 12:44:07AM -0500, Wei Huang wrote:
>
>
> On 7/23/24 11:48, Bjorn Helgaas wrote:
> > On Wed, Jul 17, 2024 at 03:55:10PM -0500, Wei Huang wrote:
> > > From: Manoj Panicker <manoj.panicker2@amd.com>
> > >
> > > Implement TPH support in Broadcom BNXT device driver by invoking
> > > pcie_tph_set_st() function when interrupt affinity is changed.
> >
> > *and* invoking pcie_tph_set_st() when setting up the IRQ in the first
> > place, I guess?
> >
> > I guess this gives a significant performance benefit? The series
> > includes "pci=nostmode" so the benefit can be quantified, so now I'm
> > curious about what you measured :)
>
> Using network benchmarks, three main metrics were measured: network latency,
> network bandwidth, and memory bandwidth saving.
I was hoping you could share actual percentage improvements to justify
the new code. If there's no improvement, obviously there would be no
point in adding the code. If there's significant improvement, it will
encourage using this in other drivers, which will improve the code and
testing for everybody.
Bjorn
next prev parent reply other threads:[~2024-08-02 17:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-17 20:55 [PATCH V3 00/10] PCIe TPH and cache direct injection support Wei Huang
2024-07-17 20:55 ` [PATCH V3 01/10] PCI: Introduce PCIe TPH support framework Wei Huang
2024-07-17 20:55 ` [PATCH V3 02/10] PCI: Add TPH related register definition Wei Huang
2024-07-23 22:33 ` Bjorn Helgaas
2024-07-17 20:55 ` [PATCH V3 03/10] PCI/TPH: Add pci=notph to prevent use of TPH Wei Huang
2024-07-23 22:41 ` Bjorn Helgaas
2024-07-24 20:05 ` Wei Huang
2024-07-25 21:29 ` Bjorn Helgaas
2024-07-29 14:56 ` Wei Huang
2024-07-24 14:45 ` Alejandro Lucero Palau
2024-07-24 15:36 ` Bjorn Helgaas
2024-07-24 20:08 ` Wei Huang
2024-07-17 20:55 ` [PATCH V3 04/10] PCI/TPH: Add pci=nostmode to force No ST Mode Wei Huang
2024-07-23 22:44 ` Bjorn Helgaas
2024-08-02 4:29 ` Wei Huang
2024-08-02 17:05 ` Bjorn Helgaas
2024-07-17 20:55 ` [PATCH V3 05/10] PCI/TPH: Introduce API to check interrupt vector mode support Wei Huang
2024-07-23 22:28 ` Bjorn Helgaas
2024-07-17 20:55 ` [PATCH V3 06/10] PCI/TPH: Introduce API to retrieve TPH steering tags from ACPI Wei Huang
2024-07-23 22:22 ` Bjorn Helgaas
2024-08-02 4:58 ` Wei Huang
2024-08-02 16:58 ` Bjorn Helgaas
2024-07-17 20:55 ` [PATCH V3 07/10] PCI/TPH: Introduce API to update TPH steering tags in PCIe devices Wei Huang
2024-07-23 23:15 ` Bjorn Helgaas
2024-07-17 20:55 ` [PATCH V3 08/10] PCI/TPH: Add TPH documentation Wei Huang
2024-07-23 21:50 ` Bjorn Helgaas
2024-07-17 20:55 ` [PATCH V3 09/10] bnxt_en: Add TPH support in BNXT driver Wei Huang
2024-07-23 16:48 ` Bjorn Helgaas
2024-08-02 5:44 ` Wei Huang
2024-08-02 17:00 ` Bjorn Helgaas [this message]
2024-07-17 20:55 ` [PATCH V3 10/10] bnxt_en: Pass NQ ID to the FW when allocating RX/RX AGG rings Wei Huang
2024-07-20 8:08 ` [PATCH V3 00/10] PCIe TPH and cache direct injection support Lukas Wunner
2024-07-22 14:44 ` Wei Huang
2024-07-22 14:58 ` Lukas Wunner
2024-07-20 19:25 ` David Wei
2024-07-22 15:38 ` Wei Huang
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