From: Jakub Kicinski <kuba@kernel.org>
To: Caleb Sander Mateos <csander@purestorage.com>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
Tariq Toukan <tariqt@nvidia.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>, Parav Pandit <parav@nvidia.com>,
netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next v2 1/2] mlx5/core: relax memory barrier in eq_update_ci()
Date: Mon, 11 Nov 2024 18:38:14 -0800 [thread overview]
Message-ID: <20241111183814.264205a9@kernel.org> (raw)
In-Reply-To: <20241107183054.2443218-1-csander@purestorage.com>
On Thu, 7 Nov 2024 11:30:51 -0700 Caleb Sander Mateos wrote:
> The memory barrier in eq_update_ci() after the doorbell write is a
> significant hot spot in mlx5_eq_comp_int(). Under heavy TCP load, we see
> 3% of CPU time spent on the mfence instruction.
Applied, thanks.
In the future please avoid sending patches in reply to older version.
prev parent reply other threads:[~2024-11-12 2:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-01 3:46 [PATCH net-next 1/2] mlx5/core: avoid memory barrier in eq_update_ci() Caleb Sander Mateos
2024-11-01 3:46 ` [PATCH net-next 2/2] mlx5/core: deduplicate {mlx5_,}eq_update_ci() Caleb Sander Mateos
2024-11-03 3:55 ` Parav Pandit
2024-11-03 22:18 ` Caleb Sander
2024-11-05 5:22 ` Parav Pandit
2024-11-05 16:06 ` Caleb Sander
2024-11-06 5:44 ` Parav Pandit
2024-11-06 23:44 ` Caleb Sander
2024-11-07 2:36 ` Saeed Mahameed
2024-11-07 2:43 ` Parav Pandit
2024-11-07 4:45 ` Caleb Sander
2024-11-07 5:14 ` Saeed Mahameed
2024-11-07 18:30 ` [PATCH net-next v2 1/2] mlx5/core: relax memory barrier in eq_update_ci() Caleb Sander Mateos
2024-11-07 18:30 ` [PATCH net-next v2 2/2] mlx5/core: deduplicate {mlx5_,}eq_update_ci() Caleb Sander Mateos
2024-11-08 10:49 ` Parav Pandit
2024-11-11 11:59 ` Tariq Toukan
2024-11-08 10:46 ` [PATCH net-next v2 1/2] mlx5/core: relax memory barrier in eq_update_ci() Parav Pandit
2024-11-11 11:59 ` Tariq Toukan
2024-11-12 2:38 ` Jakub Kicinski [this message]
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