From: Stephen Hemminger <stephen@networkplumber.org>
To: Yongseok Koh <yskoh@mellanox.com>
Cc: shahafs@mellanox.com, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3 5/6] net/mlx4: add control of excessive memory pinning by kernel
Date: Mon, 13 May 2019 21:52:22 -0700 [thread overview]
Message-ID: <20190513215222.46f6e3fb@hermes.lan> (raw)
Message-ID: <20190514045222.LGb_XgYqc1Rlu4_Ff6KstlEAbaM9Ae1pu-F1kSx3u9g@z> (raw)
In-Reply-To: <20190401211757.26241-6-yskoh@mellanox.com>
On Mon, 1 Apr 2019 14:17:56 -0700
Yongseok Koh <yskoh@mellanox.com> wrote:
> +- ``mr_ext_memseg_en`` parameter [int]
> +
> + A nonzero value enables extending memseg when registering DMA memory. If
> + enabled, the number of entries in MR (Memory Region) lookup table on datapath
> + is minimized and it benefits performance. On the other hand, it worsens memory
> + utilization because registered memory is pinned by kernel driver. Even if a
> + page in the extended chunk is freed, that doesn't become reusable until the
> + entire memory is freed.
> +
> + Enabled by default.
> +
This module parameter does not appear in the upstream Linux kernel drivers (even 5.2).
What code are you referring to?
next prev parent reply other threads:[~2019-05-14 4:52 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-07 7:41 [dpdk-dev] [PATCH 0/6] net/mlx: enable secondary process to register DMA memory Yongseok Koh
2019-03-07 7:41 ` [dpdk-dev] [PATCH 1/6] net/mlx: remove debug messages on datapath Yongseok Koh
2019-03-07 7:41 ` [dpdk-dev] [PATCH 2/6] net/mlx5: fix external memory registration Yongseok Koh
2019-03-07 7:41 ` [dpdk-dev] [PATCH 3/6] net/mlx5: add control of excessive memory pinning by kernel Yongseok Koh
2019-03-07 7:41 ` [dpdk-dev] [PATCH 4/6] net/mlx5: enable secondary process to register DMA memory Yongseok Koh
2019-03-07 7:41 ` [dpdk-dev] [PATCH 5/6] net/mlx4: add control of excessive memory pinning by kernel Yongseok Koh
2019-03-07 7:41 ` [dpdk-dev] [PATCH 6/6] net/mlx4: enable secondary process to register DMA memory Yongseok Koh
2019-03-07 7:55 ` [dpdk-dev] [PATCH 0/6] net/mlx: " Yongseok Koh
2019-03-14 12:45 ` Shahaf Shuler
2019-03-14 12:45 ` Shahaf Shuler
2019-03-25 19:22 ` [dpdk-dev] [PATCH v2 " Yongseok Koh
2019-03-25 19:22 ` Yongseok Koh
2019-03-25 19:22 ` [dpdk-dev] [PATCH v2 1/6] net/mlx: remove debug messages on datapath Yongseok Koh
2019-03-25 19:22 ` Yongseok Koh
2019-03-25 19:22 ` [dpdk-dev] [PATCH v2 2/6] net/mlx5: fix external memory registration Yongseok Koh
2019-03-25 19:22 ` Yongseok Koh
2019-03-25 19:22 ` [dpdk-dev] [PATCH v2 3/6] net/mlx5: add control of excessive memory pinning by kernel Yongseok Koh
2019-03-25 19:22 ` Yongseok Koh
2019-03-25 19:22 ` [dpdk-dev] [PATCH v2 4/6] net/mlx5: enable secondary process to register DMA memory Yongseok Koh
2019-03-25 19:22 ` Yongseok Koh
2019-03-25 19:22 ` [dpdk-dev] [PATCH v2 5/6] net/mlx4: add control of excessive memory pinning by kernel Yongseok Koh
2019-03-25 19:22 ` Yongseok Koh
2019-03-25 19:22 ` [dpdk-dev] [PATCH v2 6/6] net/mlx4: enable secondary process to register DMA memory Yongseok Koh
2019-03-25 19:22 ` Yongseok Koh
2019-04-01 21:17 ` [dpdk-dev] [PATCH v3 0/6] net/mlx: " Yongseok Koh
2019-04-01 21:17 ` Yongseok Koh
2019-04-01 21:17 ` [dpdk-dev] [PATCH v3 1/6] net/mlx: remove debug messages on datapath Yongseok Koh
2019-04-01 21:17 ` Yongseok Koh
2019-04-01 21:17 ` [dpdk-dev] [PATCH v3 2/6] net/mlx5: fix external memory registration Yongseok Koh
2019-04-01 21:17 ` Yongseok Koh
2019-04-01 21:17 ` [dpdk-dev] [PATCH v3 3/6] net/mlx5: add control of excessive memory pinning by kernel Yongseok Koh
2019-04-01 21:17 ` Yongseok Koh
2019-04-01 21:17 ` [dpdk-dev] [PATCH v3 4/6] net/mlx5: enable secondary process to register DMA memory Yongseok Koh
2019-04-01 21:17 ` Yongseok Koh
2019-04-01 21:17 ` [dpdk-dev] [PATCH v3 5/6] net/mlx4: add control of excessive memory pinning by kernel Yongseok Koh
2019-04-01 21:17 ` Yongseok Koh
2019-05-14 4:52 ` Stephen Hemminger [this message]
2019-05-14 4:52 ` Stephen Hemminger
2019-05-14 4:54 ` Stephen Hemminger
2019-05-14 4:54 ` Stephen Hemminger
2019-04-01 21:17 ` [dpdk-dev] [PATCH v3 6/6] net/mlx4: enable secondary process to register DMA memory Yongseok Koh
2019-04-01 21:17 ` Yongseok Koh
2019-04-02 7:13 ` [dpdk-dev] [PATCH v3 0/6] net/mlx: " Shahaf Shuler
2019-04-02 7:13 ` Shahaf Shuler
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