NTB: Increase transport MTU to 64k from 16k
authorDave Jiang <dave.jiang@intel.com>
Wed, 3 Jun 2015 15:29:38 +0000 (11:29 -0400)
committerJon Mason <jdmason@kudzu.us>
Sat, 4 Jul 2015 18:09:27 +0000 (14:09 -0400)
Benchmarking showed a significant performance increase with the MTU size
to 64k instead of 16k.  Change the driver default to 64k.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
drivers/ntb/ntb_transport.c

index e07b056af3be5cfc3c87a9f9c343f697597671f8..1551493197b43eeef7efd10ca3b9de365e4f03c2 100644 (file)
@@ -76,7 +76,7 @@ static unsigned long max_mw_size;
 module_param(max_mw_size, ulong, 0644);
 MODULE_PARM_DESC(max_mw_size, "Limit size of large memory windows");
 
-static unsigned int transport_mtu = 0x401E;
+static unsigned int transport_mtu = 0x10000;
 module_param(transport_mtu, uint, 0644);
 MODULE_PARM_DESC(transport_mtu, "Maximum size of NTB transport packets");