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ixgbe: change default ring size

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decrease the memory utilization of the tx / rx queue allocation
by changing the default ring size to 512 (from 1024).  At
1024 rx entries of 2KB each (from 4kB slab) with 16 queues
ixgbe was using 64 MB of memory per port, which is not
necessary.

Users can still change queue lengths with ethtool -k.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@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:
Jesse Brandeburg 2009-12-03 11:33:07 +00:00 committed by David S. Miller
parent 5f715823a0
commit 6bacb30079
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ixgbe/ixgbe.h
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@ -51,11 +51,11 @@
__func__ , ## args))) __func__ , ## args)))
/* TX/RX descriptor defines */ /* TX/RX descriptor defines */
#define IXGBE_DEFAULT_TXD 1024 #define IXGBE_DEFAULT_TXD 512
#define IXGBE_MAX_TXD 4096 #define IXGBE_MAX_TXD 4096
#define IXGBE_MIN_TXD 64 #define IXGBE_MIN_TXD 64
#define IXGBE_DEFAULT_RXD 1024 #define IXGBE_DEFAULT_RXD 512
#define IXGBE_MAX_RXD 4096 #define IXGBE_MAX_RXD 4096
#define IXGBE_MIN_RXD 64 #define IXGBE_MIN_RXD 64