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| author | Chuck Lever <chuck.lever@oracle.com> | 2019-02-11 11:23:54 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-02-13 10:30:11 -0500 |
| commit | e340c2d6ef2a8cdcc11672f8cc839c30ad360e52 (patch) | |
| tree | 66f79ef669fdbc3358afa4e2a017cca6c70688d5 /net/sunrpc/xprtrdma/verbs.c | |
| parent | d4550bbee66f4ba5a5e9bbe8055006332ebfc58b (diff) | |
| download | linux-e340c2d6ef2a8cdcc11672f8cc839c30ad360e52.tar.bz2 | |
xprtrdma: Reduce the doorbell rate (Receive)
Post RECV WRs in batches to reduce the hardware doorbell rate per
transport. This helps the RPC-over-RDMA client scale better in
number of transports.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/verbs.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/verbs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 4994e75945b8..b4e997d53ec7 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1480,6 +1480,8 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp) if (ep->rep_receive_count > needed) goto out; needed -= ep->rep_receive_count; + if (!temp) + needed += RPCRDMA_MAX_RECV_BATCH; count = 0; wr = NULL; |