[E1000-devel] Low receive performance with multiple RSS queue

2013-03-20 Thread Shinae Woo
Hello, all, We're observing a weird problem with receive-side scaling (RSS) on a 82599-based Intel NIC. In a nutshell, we do not see 10Gbps for 64B packet RX if we configure the NIC to use multiple (>1) RSS hardware queues while we _do_ see 10Gbps with a single RSS queue (with one CPU core). For

Re: [E1000-devel] e1000e: avoid NULL pointer deref in e1000_print_hw_hang()

2013-03-20 Thread akepner
(Resending - the previous version was against our local tree, not the upstream tree.) If an e1000e interface is brought down, and subsequently 'print_hang_task' is run we'll dereference a NULL 'buffer_info' pointer and crash with something like this: Mar 19 13:20:27 BUG: unable to handle ke

Re: [E1000-devel] [PATCH] igb: fix PHC stopping on max freq

2013-03-20 Thread Jiri Benc
On Tue, 19 Mar 2013 21:17:25 +, Vick, Matthew wrote: > Good catch on this, Jiri! I know the math works out the same, but I'd > prefer it if you changed the max_adj value to 9, since that is > technically what we can accept before we have any issues. If you re-submit > with this change,