NDT-DEV email list created

Revision: 522
Author:   

Date:     Wed Aug 24 08:17:32 2011
Log:      Added web100 variables description stored in the web100srv.log  
file.
http://code.google.com/p/ndt/source/detail?r=522

Modified:
 /wiki/NDTDataFormat.wiki

=======================================
--- /wiki/NDTDataFormat.wiki    Wed Aug 24 07:43:18 2011
+++ /wiki/NDTDataFormat.wiki    Wed Aug 24 08:17:32 2011
@@ -47,29 +47,29 @@
 || 3. || MID throughput speed || CWND limited throughput speed measured  
during Middlebox test (kb/s) ||
 || 4. || S2C throughput speed || value in kb/s ||
 || 5. || C2S throughput speed || value in kb/s ||
-|| 6. || Timeouts || The number of times the retransmit timeout has  
expired when the RTO backoff multiplier is equal to one. ||
-|| 7. || SumRTT || ||
-|| 8. || CountRTT || ||
-|| 9. || PktsRetrans || ||
-|| 10. || FastRetran || ||
-|| 11. || DataPktsOut || ||
-|| 12. || AckPktsOut || ||
-|| 13. || CurrentMSS || ||
-|| 14. || DupAcksIn || ||
-|| 15. || AckPktsIn || ||
-|| 16. || MaxRwinRcvd || ||
-|| 17. || Sndbuf || ||
-|| 18. || MaxCwnd || ||
-|| 19. || SndLimTimeRwin || ||
-|| 20. || SndLimTimeCwnd || ||
-|| 21. || SndLimTimeSender || ||
-|| 22. || DataBytesOut || ||
-|| 23. || SndLimTransRwin || ||
-|| 24. || SndLimTransCwnd || ||
-|| 25. || SndLimTransSender || ||
-|| 26. || MaxSsthresh || ||
-|| 27. || CurrentRTO || ||
-|| 28. || CurrentRwinRcvd || ||
+|| 6. || Timeouts || (*{{{*}}}*) The number of times the retransmit  
timeout has expired when the RTO backoff multiplier is equal to one. ||
+|| 7. || SumRTT || (*{{{*}}}*) The sum of all sampled round trip times. ||
+|| 8. || CountRTT || (*{{{*}}}*) The number of round trip time samples  
included in tcpEStatsPathSumRTT and tcpEStatsPathHCSumRTT. ||
+|| 9. || !PktsRetrans || (*{{{*}}}*) The number of segments transmitted  
containing at least some retransmitted data. ||
+|| 10. || !FastRetran || (*{{{*}}}*) The number of invocations of the Fast  
Retransmit algorithm. ||
+|| 11. || !DataPktsOut || (*{{{*}}}*) The number of segments sent  
containing a positive length data segment. ||
+|| 12. || !AckPktsOut || (*{{{*}}}*) The number of pure ack packets that  
have been sent on this connection by the Local Host. ||
+|| 13. || CurMSS || (*{{{*}}}*) The current maximum segment size (MSS), in  
octets.||
+|| 14. || !DupAcksIn || (*{{{*}}}*) The number of duplicate ACKs received.  
||
+|| 15. || !AckPktsIn || (*{{{*}}}*) The number of valid pure ack packets  
that have been received on this connection by the Local Host. ||
+|| 16. || !MaxRwinRcvd || (*{{{*}}}*) The maximum window advertisement  
received, in octets. ||
+|| 17. || Sndbuf || (*{{{*}}}*) The socket send buffer size in octets.  
Note that the meaning of this variable is implementation dependent.  
Particularly, it may or may not include the retransmit queue. ||
+|| 18. || !MaxCwnd || (*{{{*}}}*) The maximum congestion window used  
during Slow Start, in octets. ||
+|| 19. || !SndLimTimeRwin || (*{{{*}}}*) The cumulative time spent in  
the 'Receiver Limited' state. ||
+|| 20. || !SndLimTimeCwnd || (*{{{*}}}*) The cumulative time spent in  
the 'Congestion Limited' state. ||
+|| 21. || !SndLimTimeSender || (*{{{*}}}*) The cumulative time spent in  
the 'Sender Limited' state. ||
+|| 22. || !DataBytesOut || (*{{{*}}}*) The number of octets of data  
contained in transmitted segments, including retransmitted data. Note that  
this does not include TCP headers. ||
+|| 23. || !SndLimTransRwin || (*{{{*}}}*) The number of transitions into  
the 'Receiver Limited' state from either the 'Congestion Limited'  
or 'Sender Limited' states. This state is entered whenever TCP transmission  
stops because the sender has filled the announced receiver window. ||
+|| 24. || !SndLimTransCwnd || (*{{{*}}}*) The number of transitions into  
the 'Congestion Limited' state from either the 'Receiver Limited'  
or 'Sender Limited' states. This state is entered whenever TCP transmission  
stops because the sender has reached some limit defined by congestion  
control (e.g. cwnd) or other algorithms (retransmission timeouts) designed  
to control network traffic. ||
+|| 25. || !SndLimTransSender || (*{{{*}}}*) The number of transitions into  
the 'Sender Limited' state from either the 'Receiver Limited'  
or 'Congestion Limited' states. This state is entered whenever TCP  
transmission stops due to some sender limit such as running out of  
application data or other resources and the Karn algorithm. When TCP stops  
sending data for any reason which can not be classified as Receiver Limited  
or Congestion Limited it MUST be treated as Sender Limited. ||
+|| 26. || !MaxSsthresh || (*{{{*}}}*) The maximum slow start threshold,  
excluding the initial value. ||
+|| 27. || CurRTO || (*{{{*}}}*) The current value of the retransmit timer  
RTO. ||
+|| 28. || !CurRwinRcvd || (*{{{*}}}*) The most recent window advertisement  
received, in octets. ||
 || 29. || link || ||
 || 30. || mismatch || ||
 || 31. || bad_cable || ||
@@ -79,25 +79,27 @@
 || 35. || c2sack || ||
 || 36. || s2cdata || ||
 || 37. || s2cack || ||
-|| 38. || CongestionSignals || ||
-|| 39. || PktsOut || ||
-|| 40. || MinRTT || ||
-|| 41. || RcvWinScale || ||
+|| 38. || !CongestionSignals || (*{{{*}}}*) The number of multiplicative  
downward congestion window adjustments due to all forms of congestion  
signals, including Fast Retransmit, ECN and timeouts. This object  
summarizes all events that invoke the MD portion of AIMD congestion  
control, and as such is the best indicator of how cwnd is being affected by  
congestion. ||
+|| 39. || !PktsOut || (*{{{*}}}*) The total number of segments sent. ||
+|| 40. || MinRTT || (*{{{*}}}*) The minimum sampled round trip time. ||
+|| 41. || !RcvWinScale || (*{{{*}}}*) The value of Rcv.Wind.Scale. Note  
that RcvWinScale is either zero or the same as WinScaleSent. ||
 || 42. || autotune || ||
-|| 43. || CongAvoid || ||
-|| 44. || CongestionOverCount || ||
-|| 45. || MaxRTT || ||
-|| 46. || OtherReductions || ||
-|| 47. || CurTimeoutCount || ||
-|| 48. || AbruptTimeouts || ||
-|| 49. || SendStall || ||
-|| 50. || SlowStart || ||
-|| 51. || SubsequentTimeouts || ||
-|| 52. || ThruBytesAcked || ||
+|| 43. || !CongAvoid || (*{{{*}}}*) The number of times the congestion  
window has been increased by the Congestion Avoidance algorithm. ||
+|| 44. || !CongestionOverCount || (*{{{*}}}*) The number of congestion  
events which were 'backed out' of the congestion control state machine such  
that the congestion window was restored to a prior value. This can happen  
due to the Eifel algorithm [http://www.ietf.org/rfc/rfc3522.txt RFC3522] or  
other algorithms which can be used to detect and cancel spurious  
invocations of the Fast Retransmit Algorithm. ||
+|| 45. || MaxRTT || (*{{{*}}}*) The maximum sampled round trip time. ||
+|| 46. || !OtherReductions || (*{{{*}}}*) The number of congestion window  
reductions made as a result of anything other than AIMD congestion control  
algorithms. Examples of non-multiplicative window reductions include  
Congestion Window Validation [http://www.ietf.org/rfc/rfc2861.txt RFC2861]  
and experimental algorithms such as Vegas. ||
+|| 47. || !CurTimeoutCount || ||
+|| 48. || !AbruptTimeouts || ||
+|| 49. || !SendStall || (*{{{*}}}*) The number of interface stalls or  
other sender local resource limitations that are treated as congestion  
signals. ||
+|| 50. || !SlowStart || (*{{{*}}}*) The number of times the congestion  
window has been increased by the Slow Start algorithm. ||
+|| 51. || !SubsequentTimeouts || (*{{{*}}}*) The number of times the  
retransmit timeout has expired after the RTO has been doubled. See section  
5.5 in [http://www.ietf.org/rfc/rfc2988.txt RFC2988]. ||
+|| 52. || !ThruBytesAcked || ||
 || 53. || peaks.min || ||
 || 54. || peaks.max || ||
 || 55. || peaks.amount || ||

+(*{{{*}}}*) web100 variable
+
 ===cputime trace===

 This file contains lines with `times` routine results recorded using a  
100ms interval.