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Diffstat (limited to 'samples/cping/ReadMe.Txt')
-rw-r--r-- | samples/cping/ReadMe.Txt | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/samples/cping/ReadMe.Txt b/samples/cping/ReadMe.Txt new file mode 100644 index 0000000..fea1095 --- /dev/null +++ b/samples/cping/ReadMe.Txt @@ -0,0 +1,47 @@ +Microsoft Research Detours Package +============================================================================== +4/2/98 + +* Instrumentation: + Read Pentium cycle counter + +* PC configuration: + DCOM/TCP, Windows NT Server 4.0, + between two 300MHz Pentium boxes, + Ethernet connecction + +* Client test program: + HRESULT get(SHORT, SHORT, LONG*) + average over 1,000 calls + midl /Oicf + +* Results: + get() { + <-- (1) + IRpcChannelBuffer::SendReceive()) { + <-- (2) + I_RpcSendReceive() { + <-- (3) + send(soc, ) + <-- (4) + NtWaitForSingleObject(soc, ) + <-- (5) + } // end of RPC layer + <-- (6) + } // end of channel object + <-- (7) + } // end of client call + Average number + of Pentium cycles + (1) NDR marshaling overhead (2 SHORTs) 13 K + (No! of which 11K from GetBuffer, + of which 6.2K from I_RpcGetBuffer()!) + (2) Channel object one-way (send) overhead 1.0 K + (3) RPC layer one-way (send) overhead 5.3 K + (4) TCP + all server work 200 K + (5) RPC layer one-way (recv) overhead 5.1 K + (6) Channel object one-way (recv) overhead 2.2 K + (7) NDR unmarshaling overhead (2 LONGs) 4.2 K + + (*) send() only 17 K + TOTAL CYCLES for client get(): 230 K |