Re: [PATCH 2/13] cxgb3 - Update rx coalescing length

Jeff Garzik wrote:

Divy Le Ray wrote:
> From: Divy Le Ray <[email protected]>
>
> Set max Rx coalescing length to 12288
>
> Signed-off-by: Divy Le Ray <[email protected]>
> ---
>
>  drivers/net/cxgb3/common.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h
> index c46c249..55922ed 100644
> --- a/drivers/net/cxgb3/common.h
> +++ b/drivers/net/cxgb3/common.h
> @@ -104,7 +104,7 @@ enum {
>       PROTO_SRAM_LINES = 128, /* size of TP sram */
>  };

> > -#define MAX_RX_COALESCING_LEN 16224U

> +#define MAX_RX_COALESCING_LEN 12288U

neither the patch nor description explains -why-

We're seeing back pressure from PCIe with large bursts, this patch allows to cut down on the burst size.

Divy

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---

• References:
  • [PATCH 2/13] cxgb3 - Update rx coalescing length
    • From: Divy Le Ray <[email protected]>
  • Re: [PATCH 2/13] cxgb3 - Update rx coalescing length
    • From: Jeff Garzik <[email protected]>

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