Re: Another crash with 2.1.42 + mmap patches

David S. Miller (
Tue, 10 Jun 1997 20:22:21 -0400

Mark, we have some greater problems in 2.1.42 I have just found.

For standard sized full ethernet frames (1500 bytes or so) skb's
allocated via SLAB kmalloc() use enormous page orders for their
allocations, this is dangerous to do and is what is leading to
IP fragmentation and other out of allocation failures.

I think we should (just for the general caches) limit the order to 2,
_maybe_ 3. At least for now until we come up with a better fix.

Yow! 11.26 MB/s remote host TCP bandwidth & ////
199 usec remote TCP latency over 100Mb/s ////
ethernet. Beat that! ////
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David S. Miller, /_____________/ / // /_/ ><