Chuck Lever 89d2d9fbea
SUNRPC: Revert e0a912e8dd...
Flamegraph analysis showed that the cork/uncork calls consume
nearly a third of the CPU time spent in svc_tcp_sendto(). The
other two consumers are mutex lock/unlock and svc_tcp_sendmsg().
Now that svc_tcp_sendto() coalesces RPC messages properly, there
is no need to introduce artificial delays to prevent sending
partial messages.
After applying this change, I measured a 1.2K read IOPS increase
for 8KB random I/O (several percent) on 56Gb IP over IB.
Reviewed-by: David Howells <dhowells@redhat.com >
Signed-off-by: Chuck Lever <chuck.lever@oracle.com >
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