NDT-DEV email list created

Revision: 623
Author:   

Date:     Wed Sep 14 03:09:08 2011
Log:      Added links to the current version of the tcp-kis.txt file.
http://code.google.com/p/ndt/source/detail?r=623

Modified:
 /wiki/NDTDataFormat.wiki

=======================================
--- /wiki/NDTDataFormat.wiki    Wed Sep 14 02:51:34 2011
+++ /wiki/NDTDataFormat.wiki    Wed Sep 14 03:09:08 2011
@@ -143,29 +143,29 @@
 || 3. || MID throughput speed || CWND limited throughput speed measured  
during Middlebox test (value in kb/s) ||
 || 4. || S2C throughput speed || measured throughput speed from server to  
client (value in kb/s) ||
 || 5. || C2S throughput speed || measured throughput speed from client to  
server (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 || (*{{{*}}}*) 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. ||
+|| 6. || Timeouts ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of times the retransmit timeout has expired when the RTO backoff  
multiplier is equal to one. ||
+|| 7. || SumRTT ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The sum of all sampled round trip times. ||
+|| 8. || CountRTT ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of round trip time samples included in tcpEStatsPathSumRTT and  
tcpEStatsPathHCSumRTT. ||
+|| 9. || !PktsRetrans ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of segments transmitted containing at least some retransmitted  
data. ||
+|| 10. || !FastRetran ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of invocations of the Fast Retransmit algorithm. ||
+|| 11. || !DataPktsOut ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of segments sent containing a positive length data segment. ||
+|| 12. || !AckPktsOut ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of pure ack packets that have been sent on this connection by  
the Local Host. ||
+|| 13. || CurMSS ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The current maximum segment size (MSS), in octets.||
+|| 14. || !DupAcksIn ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of duplicate ACKs received. ||
+|| 15. || !AckPktsIn ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of valid pure ack packets that have been received on this  
connection by the Local Host. ||
+|| 16. || !MaxRwinRcvd ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The maximum window advertisement received, in octets. ||
+|| 17. || Sndbuf ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The maximum congestion window used during Slow Start, in octets. ||
+|| 19. || !SndLimTimeRwin ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The cumulative time spent in the 'Receiver Limited' state. ||
+|| 20. || !SndLimTimeCwnd ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The cumulative time spent in the 'Congestion Limited' state. ||
+|| 21. || !SndLimTimeSender ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The cumulative time spent in the 'Sender Limited' state. ||
+|| 22. || !DataBytesOut ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of octets of data contained in transmitted segments, including  
retransmitted data. Note that this does not include TCP headers. ||
+|| 23. || !SndLimTransRwin ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The maximum slow start threshold, excluding the initial value. ||
+|| 27. || CurRTO ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The current value of the retransmit timer RTO. ||
+|| 28. || !CurRwinRcvd ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The most recent window advertisement received, in octets. ||
 || *29.* || *link* || A detected link type by the set of custom  
heuristics. The details of the detection algorithm can be found in the  
[NDTTestMethodology#Link_Type_Detection_Heuristics NDT Test Methodology  
document].<br><br>This variable can have the following values:<ul><li>*100*  
- link type cannot be detected (tests did not recognize the  
link)</li><li>*0* - detection algorithm failed (due to some error  
condition)</li><li>*10* - Ethernet link (Fast Ethernet)</li><li>*3* -  
wireless link</li><li>*2* - DSL/Cable modem link</li></ul> ||
 || *30.* || *duplex mismatch* || A detected duplex mismatch condition. The  
details of the detection algorithm can be found in the  
[NDTTestMethodology#Duplex_Mismatch_Detection NDT Test Methodology  
document].<br><br>This variable can have the following values:<ul><li>*0* -  
no duplex mismatch condition was detected</li><li>*1* - possible duplex  
mismatch condition was detected by the Old Duplex-Mismatch  
algorithm</li><li>*2* - possible duplex mismatch condition was detected by  
the new algorithm: Switch=Full and Host=Half</li></ul> ||
 || *31.* || *bad_cable* || A detected bad cable condition. The details of  
the detection algorithm can be found in the  
[NDTTestMethodology#Faulty_Hardware_Link_Detection NDT Test Methodology  
document].<br><br>This variable can have the following values:<ul><li>*0* -  
no bad cable condition was detected</li><li>*1* - possible bad cable  
condition was detected</li></ul> ||
@@ -175,26 +175,26 @@
 || *35.* || *c2sack* || A link type detected by the Bottleneck Link  
Detection algorithm using the *Client <-- Server Ack packets*' inter-packet  
arrival times. The details of the detection algorithm can be found in the  
[NDTTestMethodology#Bottleneck_Link_Detection NDT Test Methodology  
document]. <br><br>This variable can have the same values as the *c2sdata*  
variable ||
 || *36.* || *s2cdata* || A link type detected by the Bottleneck Link  
Detection algorithm using the *Server --> Client data packets*'  
inter-packet arrival times. The details of the detection algorithm can be  
found in the [NDTTestMethodology#Bottleneck_Link_Detection NDT Test  
Methodology document]. <br><br>This variable can have the same values as  
the *c2sdata* variable ||
 || *37.* || *s2cack* || A link type detected by the Bottleneck Link  
Detection algorithm using the *Server <-- Client Ack packets*' inter-packet  
arrival times. The details of the detection algorithm can be found in the  
[NDTTestMethodology#Bottleneck_Link_Detection NDT Test Methodology  
document]. <br><br>This variable can have the same values as the *c2sdata*  
variable ||
-|| 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. ||
+|| 38. || !CongestionSignals ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The total number of segments sent. ||
+|| 40. || MinRTT ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The minimum sampled round trip time. ||
+|| 41. || !RcvWinScale ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The value of Rcv.Wind.Scale. Note that !RcvWinScale is either zero or the  
same as !WinScaleSent. ||
 || 42. || autotune || (*deprecated/not used*) This value kept the  
information about web100 autotune functionality. It could have the  
following values: 0 - autotune is disabled, 1 - sbufmode autotune is  
enabled, 2 - rbufmode autotune is enabled, 3 - all autotune modes are  
enabled, 22 - autotune params cannot be found, 23 - autotune params cannot  
be read ||
-|| 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 || (*{{{*}}}*) The current number of times the  
retransmit timeout has expired without receiving an acknowledgment for new  
data. tcpEStatsStackCurTimeoutCount is reset to zero when new data is  
acknowledged and incremented for each invocation of section 5.5 in  
[http://www.ietf.org/rfc/rfc2988.txt RFC2988]. ||
-|| 48. || !AbruptTimeouts || (*{{{*}}}*) The number of timeouts that  
occurred without any immediately preceding duplicate acknowledgments or  
other indications of congestion. Abrupt Timeouts indicate that the path  
lost an entire window of data or acknowledgments. Timeouts that are  
preceded by duplicate acknowledgments or other congestion signals (e.g.,  
ECN) are not counted as abrupt, and might have been avoided by a more  
sophisticated Fast Retransmit algorithm. ||
-|| 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 || (*{{{*}}}*) The number of octets for which  
cumulative acknowledgments have been received, on systems that can receive  
more than 10 million bits per second.  Note that this will be the sum of  
changes in tcpEStatsAppSndUna. ||
+|| 43. || !CongAvoid ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of times the congestion window has been increased by the  
Congestion Avoidance algorithm. ||
+|| 44. || !CongestionOverCount ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The maximum sampled round trip time. ||
+|| 46. || !OtherReductions ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The current number of times the retransmit timeout has expired without  
receiving an acknowledgment for new data. tcpEStatsStackCurTimeoutCount is  
reset to zero when new data is acknowledged and incremented for each  
invocation of section 5.5 in [http://www.ietf.org/rfc/rfc2988.txt RFC2988].  
||
+|| 48. || !AbruptTimeouts ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of timeouts that occurred without any immediately preceding  
duplicate acknowledgments or other indications of congestion. Abrupt  
Timeouts indicate that the path lost an entire window of data or  
acknowledgments. Timeouts that are preceded by duplicate acknowledgments or  
other congestion signals (e.g., ECN) are not counted as abrupt, and might  
have been avoided by a more sophisticated Fast Retransmit algorithm. ||
+|| 49. || !SendStall ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of interface stalls or other sender local resource limitations  
that are treated as congestion signals. ||
+|| 50. || !SlowStart ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of times the congestion window has been increased by the Slow  
Start algorithm. ||
+|| 51. || !SubsequentTimeouts ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
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 ||  
(*{{{*}}}*[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt])  
The number of octets for which cumulative acknowledgments have been  
received, on systems that can receive more than 10 million bits per  
second.  Note that this will be the sum of changes in tcpEStatsAppSndUna. ||
 || 53. || peaks.min || The minimal value of the CWND peak ||
 || 54. || peaks.max || The maximal value of the CWND peak ||
 || 55. || peaks.amount || The amount of the CWND peaks ||

-(*{{{*}}}*) web100 variable
+(*{{{*}}}*) web100 variable. For a more detailed and up-to-date  
description please look at the current version of the  
[http://www.web100.org/download/kernel/tcp-kis.txt tcp-kis.txt] file.

 ===cputime trace===