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| author | Chuck Lever <chuck.lever@oracle.com> | 2015-08-03 13:02:50 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2015-08-05 16:21:26 -0400 |
| commit | 864be126fe5f325ec4b3e28173ca5cad2b8ee28c (patch) | |
| tree | 2ab495670158955e3ddea9a4bccaf8e193adcdc5 /net | |
| parent | 5231eb9773c61a2a17590eabcadf4aecf44100bd (diff) | |
| download | op-kernel-dev-864be126fe5f325ec4b3e28173ca5cad2b8ee28c.zip op-kernel-dev-864be126fe5f325ec4b3e28173ca5cad2b8ee28c.tar.gz | |
xprtrdma: Raise maximum payload size to one megabyte
The point of larger rsize and wsize is to reduce the per-byte cost
of memory registration and deregistration. Modern HCAs can typically
handle a megabyte or more with a single registration operation.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Devesh Sharma <devesh.sharma@avagotech.com>
Reviewed-By: Sagi Grimberg <sagig@mellanox.com>
Tested-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/xprtrdma/xprt_rdma.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index f49dd8b..abee472 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -165,8 +165,7 @@ rdmab_to_msg(struct rpcrdma_regbuf *rb) * struct rpcrdma_buffer. N is the max number of outstanding requests. */ -/* temporary static scatter/gather max */ -#define RPCRDMA_MAX_DATA_SEGS (64) /* max scatter/gather */ +#define RPCRDMA_MAX_DATA_SEGS ((1 * 1024 * 1024) / PAGE_SIZE) #define RPCRDMA_MAX_SEGS (RPCRDMA_MAX_DATA_SEGS + 2) /* head+tail = 2 */ struct rpcrdma_buffer; |
