NDT-DEV email list created

Revision: 546
Author:   

Date:     Mon Aug 29 04:31:28 2011
Log:      Extended description of the web100 snaplog trace files.
http://code.google.com/p/ndt/source/detail?r=546

Modified:
 /wiki/NDTDataFormat.wiki

=======================================
--- /wiki/NDTDataFormat.wiki    Mon Aug 29 03:54:49 2011
+++ /wiki/NDTDataFormat.wiki    Mon Aug 29 04:31:28 2011
@@ -67,9 +67,17 @@

 ===web100 snaplog trace===

-Writing snaplog file is enabled by `--snaplog` option.
-
-This file contains all the [http://www.web100.org/ web100] kernel MIB  
variables' values written in a fixed time (default is 5 msec) increments.  
The list of logged variables with a short description can be found in the  
[NDTProtocol#Appendix_A._web100_variables NDT Protocol document].
+Writing snaplog files is enabled by the `--snaplog` option.
+
+These files contain all the [http://www.web100.org/ web100] kernel MIB  
variables' values written in a fixed time (default is 5 msec) increments  
for the individual C2S/S2C subtests (these snapshots are taken only for a  
newly created connection used for the throughput test).
+
+The snapshots from the C2S Throughput test are stored in the  
{{{*}}}.c2s_snaplog file, the snaphots from the S2C Throughput test are  
stored in the {{{*}}}.s2c_snaplog file.
+
+The snaplog files are a binary files written in the format defined by the  
[http://www.web100.org/ web100] library. In addition to the standard  
[http://www.web100.org/ web100] variables' values written in each snapshot,  
the 'Duration' variable is also stored to indicate the number of seconds  
from the beginning of the snaplog session.
+
+The list of logged variables with a short description can be found in the  
[NDTProtocol#Appendix_A._web100_variables NDT Protocol document].
+
+

 ===web100srv.log file===

@@ -199,7 +207,7 @@

 The tcpdump files can be read using [http://www.tcpdump.org/ tcpdump] and  
[http://www.tcptrace.org/ tcptrace] programs.

-The NDT package comes with a utility (called genplot) that can convert  
snaplog trace files into text or xplot graph files. Alternatively the user  
can write their own analysis program using the web100 library functions.
+The NDT package comes with a utility (called genplot) that can convert  
snaplog trace files into text or xplot graph files. Alternatively the user  
can write their own analysis program using the [http://www.web100.org/  
web100] library functions.

 The NDT server also contains a Java application that can look through the  
NDT log files and link log entries to trace files, and it also simplifies  
the viewing of this data. The utility will need to be rewritten slightly to  
take advantage of the meta files instead of (in addition to) the log files.