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sky2: no recycling

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Recycling turns out to be a bad idea!  For most use cases, the
packet can not be reused: TCP packets are cloned. Even for the ideal
case of forwarding, it hurts performance because of CPU ping/pong.
On a multi-core system forwarding of 64 byte packets is worse
much worse: recycling = 24% forwarded vs no recycling = 42% forwarded

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2009-08-18 15:17:10 +00:00
committed by David S. Miller
parent 6b84dacadb
commit 724b694225
2 changed files with 3 additions and 14 deletions
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drivers/net/sky2.h
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@@ -2032,7 +2032,6 @@ struct sky2_port {
u16 rx_pending;
u16 rx_data_size;
u16 rx_nfrags;
struct sk_buff_head rx_recycle;
#ifdef SKY2_VLAN_TAG_USED
u16 rx_tag;