Re: 2.6.14-rc5 e1000 and page allocation failures.. still

On 10/23/05, Robert Hancock [off-list ref] wrote:

John Bäckstrand wrote:

quoted

Im seeing a massive amount of page allocation failures with 2.6.14-rc5,
and also earlier kernels, see "E1000 - page allocation failure - saga

[snip]

It looks like you have enough memory free - the problem is that the
driver is allocating a block of memory with order 3, which is 8 pages.
Quite likely there are not enough contiguous free pages to satisfy that.

That's an awful big buffer size for a packet - I assume you're using
jumbo frames or something? Ideally the driver and hardware should be
able to allocate a buffer for those packets in multiple chunks, but I
have no idea if this is possible.

the latest e1000 driver (6.2.15) from http://sf.net/projects/e1000
fixes this by using multiple descriptors for jumbo frames, therefore
only doing order 0 (single page) page allocations.

let us know how it goes.

BTW why is this so much more common with recent kernels?