thinkpad.txt

Legend
===================
Methods:
  fd:      client sends a file descriptor for the server to fill
  s-write: server writes data the passed fd using write() syscall
  s-mmap:  server mmaps() the passed fd and writes using memset()
  s-reuse: server holds on to the mmapped region across calls
  c-reuse: client holds on to the mmapped region across calls
  sidecar: server sends back data over unix socket
  nt:      server uses nontemporal store instructions to write

NOTE: s-reuse without c-reuse isn't very effective since the server
will detect that it cant actually reuse the mapped buffer, since the
client provided a new one.
Columns designate which core each thread is bound to:
  client: the client 'user' thread
  c-rx:   the client reactor thread
  s-rx:   the server reactor thread
  worker: the server RPC worker thread

Core notation:
  SaCbTc: socket a core b thread c

Speed-limit (optimal) performance: 18563.2 MB/sec
                        method client   c-rx   s-rx worker	MB/sec
# all-same-core
                   fd(s-write) S0C0T0 S0C0T0 S0C0T0 S0C0T0	2545.3
                    fd(s-mmap) S0C0T0 S0C0T0 S0C0T0 S0C0T0	1934.5
                 fd(s-mmap,nt) S0C0T0 S0C0T0 S0C0T0 S0C0T0	1739.7
            fd(s-mmap,s-reuse) S0C0T0 S0C0T0 S0C0T0 S0C0T0	1973.7
         fd(s-mmap,s-reuse,nt) S0C0T0 S0C0T0 S0C0T0 S0C0T0	1731.9
           fd(s-write,c-reuse) S0C0T0 S0C0T0 S0C0T0 S0C0T0	5158.5
            fd(s-mmap,c-reuse) S0C0T0 S0C0T0 S0C0T0 S0C0T0	6196.4
         fd(s-mmap,c-reuse,nt) S0C0T0 S0C0T0 S0C0T0 S0C0T0	4987.3
    fd(s-mmap,c-reuse,s-reuse) S0C0T0 S0C0T0 S0C0T0 S0C0T0	13441.2
 fd(s-mmap,c-reuse,s-reuse,nt) S0C0T0 S0C0T0 S0C0T0 S0C0T0	9437.3
                       sidecar S0C0T0 S0C0T0 S0C0T0 S0C0T0	4556.2
                    sidecar,nt S0C0T0 S0C0T0 S0C0T0 S0C0T0	3736.6
# client-server-cross-core
                   fd(s-write) S0C0T0 S0C0T0 S0C1T0 S0C1T0	2143.1
                    fd(s-mmap) S0C0T0 S0C0T0 S0C1T0 S0C1T0	1686.6
                 fd(s-mmap,nt) S0C0T0 S0C0T0 S0C1T0 S0C1T0	1549.3
            fd(s-mmap,s-reuse) S0C0T0 S0C0T0 S0C1T0 S0C1T0	1729.0
         fd(s-mmap,s-reuse,nt) S0C0T0 S0C0T0 S0C1T0 S0C1T0	1538.6
           fd(s-write,c-reuse) S0C0T0 S0C0T0 S0C1T0 S0C1T0	4228.6
            fd(s-mmap,c-reuse) S0C0T0 S0C0T0 S0C1T0 S0C1T0	5296.2
         fd(s-mmap,c-reuse,nt) S0C0T0 S0C0T0 S0C1T0 S0C1T0	4188.3
    fd(s-mmap,c-reuse,s-reuse) S0C0T0 S0C0T0 S0C1T0 S0C1T0	10142.7
 fd(s-mmap,c-reuse,s-reuse,nt) S0C0T0 S0C0T0 S0C1T0 S0C1T0	7642.3
                       sidecar S0C0T0 S0C0T0 S0C1T0 S0C1T0	3755.6
                    sidecar,nt S0C0T0 S0C0T0 S0C1T0 S0C1T0	3142.8
# client-server-cross-socket
WARNING: Logging before InitGoogleLogging() is written to STDERR
W0414 16:06:58.495776 26892 rpc_stub-test.cc:1094] Local system doesn't have appropriate CPU topology to execute test scenario client-server-cross-socket
# every-hop-crosses-core
                   fd(s-write) S0C0T0 S0C1T0 S0C2T0 S0C3T0	1835.6
                    fd(s-mmap) S0C0T0 S0C1T0 S0C2T0 S0C3T0	1527.8
                 fd(s-mmap,nt) S0C0T0 S0C1T0 S0C2T0 S0C3T0	1369.6
            fd(s-mmap,s-reuse) S0C0T0 S0C1T0 S0C2T0 S0C3T0	1551.2
         fd(s-mmap,s-reuse,nt) S0C0T0 S0C1T0 S0C2T0 S0C3T0	1403.2
           fd(s-write,c-reuse) S0C0T0 S0C1T0 S0C2T0 S0C3T0	3412.2
            fd(s-mmap,c-reuse) S0C0T0 S0C1T0 S0C2T0 S0C3T0	4813.7
         fd(s-mmap,c-reuse,nt) S0C0T0 S0C1T0 S0C2T0 S0C3T0	3448.4
    fd(s-mmap,c-reuse,s-reuse) S0C0T0 S0C1T0 S0C2T0 S0C3T0	9348.1
 fd(s-mmap,c-reuse,s-reuse,nt) S0C0T0 S0C1T0 S0C2T0 S0C3T0	7051.8
                       sidecar S0C0T0 S0C1T0 S0C2T0 S0C3T0	3289.8
                    sidecar,nt S0C0T0 S0C1T0 S0C2T0 S0C3T0	2836.2
# every-hop-crosses-socket
W0414 16:07:46.795485 26892 rpc_stub-test.cc:1094] Local system doesn't have appropriate CPU topology to execute test scenario every-hop-crosses-socket