From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, gospo@redhat.com,
Jesse Brandeburg <jesse.brandeburg@intel.com>,
Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Subject: [net-next-2.6 PATCH 3/5] ixgbe: change default ring size
Date: Thu, 03 Dec 2009 13:33:07 -0800 [thread overview]
Message-ID: <20091203213306.9291.86505.stgit@localhost.localdomain> (raw)
In-Reply-To: <20091203213221.9291.34218.stgit@localhost.localdomain>
From: Jesse Brandeburg <jesse.brandeburg@intel.com>
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>
---
drivers/net/ixgbe/ixgbe.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 7e35e97..91d80b7 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -51,11 +51,11 @@
__func__ , ## args)))
/* TX/RX descriptor defines */
-#define IXGBE_DEFAULT_TXD 1024
+#define IXGBE_DEFAULT_TXD 512
#define IXGBE_MAX_TXD 4096
#define IXGBE_MIN_TXD 64
-#define IXGBE_DEFAULT_RXD 1024
+#define IXGBE_DEFAULT_RXD 512
#define IXGBE_MAX_RXD 4096
#define IXGBE_MIN_RXD 64
next prev parent reply other threads:[~2009-12-03 21:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-03 21:32 [net-next-2.6 PATCH 1/5] ixgbe: use known user priority for FCoE when DCB is enabled Jeff Kirsher
2009-12-03 21:32 ` [net-next-2.6 PATCH 2/5] ixgbe: select FCoE Tx queue in ndo_select_queue Jeff Kirsher
2009-12-03 21:33 ` Jeff Kirsher [this message]
2009-12-03 21:33 ` [net-next-2.6 PATCH 4/5] ixgbe: performance tweaks Jeff Kirsher
2009-12-03 21:33 ` [net-next-2.6 PATCH 5/5] ixgbe: use EIAM to automask MSI-X Jeff Kirsher
2009-12-03 23:43 ` [net-next-2.6 PATCH 1/5] ixgbe: use known user priority for FCoE when DCB is enabled David Miller
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