Re: [RFC V1 1/1] net: cdc_ncm: Reduce memory use when kernel memory low

From: Oliver Neukum
Date: Wed May 17 2017 - 03:46:05 EST


Am Dienstag, den 16.05.2017, 20:24 +0200 schrieb BjÃrn Mork:
>
> I must say that I don't like the additional complexity added here. If
> there are memory issues and you can reduce the buffer size to
> USB_CDC_NCM_NTB_MIN_OUT_SIZE, then why don't you just set a lower tx_max
> buffer size in the first place?
>
> echo 2048 > /sys/class/net/wwan0/cdc_ncm/tx_max
>

Hi,

that would hurt performance across the board though.
Can we trigger memory compactation earlier?

Regards
Oliver