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igb: reduce size required to trigger low latency 

Update the Adaptive Interrupt Moderation algorithm so that the low latency
state is triggered less easily to prevent high interrupt loads.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2009-02-12 18:17:21 +00:00 committed by David S. Miller
parent 73cd78f1d3
commit 1e5c3d218a
1 changed files with 1 additions and 1 deletions
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2
drivers/net/igb/igb_main.c
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@ -2666,7 +2666,7 @@ static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting,
if (bytes > 25000) { if (bytes > 25000) {
if (packets > 35) if (packets > 35)
retval = low_latency; retval = low_latency;
} else if (bytes < 6000) { } else if (bytes < 1500) {
retval = low_latency; retval = low_latency;
} }
break; break;