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

[Baxter, Jim]

From: David S. Miller (davem@xxxxxxxxxxxxx)
Sent: Wed, 17 May 2017 14:18:19 -0400 

> 
> When there isn't memory pressure this will hurt performance of
> course.
> 
> It is a quite common paradigm to back down to 0 order memory requests
> when higher order ones fail, so this isn't such a bad change from the
> perspective.
> 
> However, one negative about it is that when the system is under memory
> stress it doesn't help at all to keep attemping high order allocations
> when the system hasn't recovered yet.  In fact, this can make it
> worse.
> 

Hello David,

Do you think the patch should be modified to extend the length of time
the 0 order memory requests with a time period of 1 minute for example?

Or do you feel the patch is not the correct way this should be performed?

Best regards,
Jim