Statistics Logs

There are two different Web Server/400 statistics log files available:

A text file containing the calculated statistics log file configured using the Statistics Log Filename configuration value.
A multiple field data base file containing the raw data used to calculate the text version of the statistics log file. The Statistics Raw Data Log Filename configuration value is used to configure this filename.

Statistics Log File (calculated values)

The text version of the statistics log file contains four tables of formatted and calculated information:

Request Processor Averages

The following is the format of the table. Each row represents the statistics for one Request Processor.

   RP    Req/    Bytes/   CPU Time/   Elapsed Time/  Avg. Bytes  Avg. Bytes
   Nbr   Sec.     Sec.     Req(secs)    Req(secs)     Sent/Req     Rcv/Req
   ---  ------  --------  ----------  -------------  ----------  ----------
     1    x.xx   xx.xx K       x.xx          xx.xx      xx.xx K     xx.xx K
     2    y.yy   yy.yy M       x.xx          yy.yy      yy.yy M     yy.yy M

RP Nbr: Request Processor Number
Req/Sec.: The number of Requests/Second processed by each request processor. The time measurement used to calculate the result is based on elapsed time.
Bytes/Sec.: The average amount of data processed by the request processor each second. The time measurement used to calculate the result is based on elapsed time.
CPU Time/Req (secs): The average amount of CPU processing time incurred processing each request (measured in seconds).
Elapsed Time/Req (secs): The average amount of elapsed time incurred processing each request (measured in seconds).
Avg. Bytes Sent/Req: The average amount of data sent for each request.
Avg. Bytes Rcv/Req: The average amount of data received for each request.

Request Processor Totals

The following is the format of the table. Each row represents the statistics for one Request Processor.

   RP    Number    CPU Req    Elapsed Req    Bytes      Bytes
   Nbr   of Req   Time(secs)  Time(secs)      Sent     Received
   ---  --------  ----------  -----------  ---------  ----------
     1   xxx.x K       x.xx         x.xx     xx.xx K     xx.xx K
     2   yyy.y M       y.yy         y.yy     yy.yy M     yy.yy M

RP Nbr: Request Processor Number
Number of Req: The total number of requests processed.
CPU Req Time (secs): The total amount of CPU time spent processing all the requests.
Elapsed Req Time secs): The total amount of elapsed time spent processing all the requests.
Bytes Sent: The total amount of data sent for all the requests.
Bytes Received: The total amount of data received for all the requests.

Request Processor Calendar Information

The following is the format of the table. Each row represents the start and end date and time for one Request Processor.

   RP
   Nbr   Start Time            End Time
   ---  --------------------  --------------------
     1  dd/mth/year dd:mi:ss  dd/mth/year dd:mi:ss
     2  dd/mth/year dd:mi:ss  dd/mth/year dd:mi:ss

RP Nbr: Request Processor Number
Start Time: The date and time the request processor was started.
End Time: The date and time the request processor ended.

Server Totals

The following is the format of the table.

   Start Time . . . . . . . . . . . . . . . . : dd/mth/year dd:mi:ss
   End Time . . . . . . . . . . . . . . . . . : dd/mth/year dd:mi:ss
   Total Number of Requests . . . . . . . . . : x
   Requests/Second  . . . . . . . . . . . . . : x.xx
   Average CPU Processing Time per Request  . : x.xxx (seconds)
   Total CPU Processing Time  . . . . . . . . : xx.xx (seconds)
   Average Elapsed Time per Request . . . . . : x.xxx (seconds)
   Total Elapsed Time . . . . . . . . . . . . : xx.xx (seconds)
   Average Bytes Sent per Request . . . . . . : xxxx.xx
   Total Bytes Sent . . . . . . . . . . . . . : xxxxx
   Average Bytes Received per Request . . . . : xxx.xx
   Total Bytes Received . . . . . . . . . . . : xxx
   Bytes/Second . . . . . . . . . . . . . . . : xxx.xx
   Total Bytes  . . . . . . . . . . . . . . . : xxxxx

Start Time: The date and time the Web Server was started.
End Time: The date and time the Web Server ended.
Total Number of Requests: The total number of requests processed by all of the request processors during this run of the web server.
Requests/Second: The total number of Requests/Second processed by all of the request processors. The time measurement used to calculate the result was based on the total elapsed time required to process the requests.
Average CPU Processing Time per Request: The average amount of CPU processing time required per request.
Total CPU Processing Time: The total amount of CPU processing time required to process all of the requests.
Average Elapsed Time per Request: The average amount of elapsed time required per request.
Total Elapsed Processing Time: The total amount of elapsed time required to process all of the requests.
Average Bytes Sent per Request: The average amount of data sent for each request.
Total Bytes Sent: The total amount of data sent by all request processors.
Average Bytes Received per Request: The average amount of data received for each request.
Total Bytes Received: The total amount of data received by all request processors.
Bytes/Second: The average amount of data processed by the request processors each second. The time measurement used to calculate the result was based on the total elapsed time required to process the requests.
Total Bytes: The total amount of data sent and received by all request processors.

The following notes apply to all of the tables:

Start and End Time format legend: dd - day, mth - month, year - year, hr - hour, mi - minutes, ss - seconds
All measurements of bytes (bytes sent, bytes received, and total bytes) with "K" or "M" multipliers refer to computer calculations of these values where K = 1024 and M = 1024x1024. Measurements that don't deal with bytes that include a "K" or "M" multipliers refer to the following values K = 1000 and M = 1,000,000.

Note: If the text version of the statistics log file is stored within the QSYS file system it will contain a single field record format. The information stored within the file will look the same as if it were in any other file system.

Statistics Raw Data Log File

The statistics raw data log file contains a multiple field record format. The DDS source used to create the statistics raw data log can be found in the WWWSERVER library QDDSSRC file STATSLOG member. This information can be used to programmatically describe the record format of the statistics raw data log data base file. This file can be used as the basis for creating a Web Server/400 statistics tool or CGI script.

The statistics raw data log file includes a record for each Request Processor. This log file contains two types of records, intermediate and total. The records written during the cycling of the statistics log file are considered intermediate records. The records written at the end of a server run are considered total records. The following is the list of the fields, in their respective order, included within a statistics raw data log data base file entry:

Intermediate or Total statistics flag (1 character)

The statistics raw data log file includes records written during the cycling of the statistics log (intermediate statistics) or at the end of the server run (total statistics). A value of '0' indicates an intermediate statistics record and a value of '1' indicates a total statistics record.

Port Identifier (5 characters)

The port identifier indicates the port the request processor recording these statistics is running on.

Request Processor Number (5 characters)

The request processor identifier.

Statistics Date (8 characters)

The date when this record was written to the statistics raw data log file. The format of this field is "YYYYMMDD"

YYYY is the year using 4 character positions
MM is the month using 2 character positions
DD is the day of the month using 2 character positions.

Statistics Time (6 characters)

The time when this record was written to the statistics raw data log file. The format of this field is "HHMMSS"

HH is the hour displayed as a value of (00 - 23 hours) using 2 character positions
MM is the minutes using 2 character positions
SS is the seconds using 2 character positions

Start Date (8 characters)

The date when the request processor reporting these statistics was started. The format of this field is "YYYYMMDD"

YYYY is the year using 4 character positions
MM is the month using 2 character positions
DD is the day of the month using 2 character positions.

Start Time (6 characters)

The time when the request processor reporting these statistics was started. The format of this field is "HHMMSS"

HH is the hour displayed as a value of (00 - 23 hours) using 2 character positions
MM is the minutes using 2 character positions
SS is the seconds using 2 character positions

End Date (8 characters)

The date when the request processor reporting these statistics ended. The format of this field is "YYYYMMDD"

YYYY is the year using 4 character positions
MM is the month using 2 character positions
DD is the day of the month using 2 character positions.

End Time (6 characters)

The time when the request processor reporting these statistics ended. The format of this field is "HHMMSS"

HH is the hour displayed as a value of (00 - 23 hours) using 2 character positions
MM is the minutes using 2 character positions
SS is the seconds using 2 character positions

Number of Requests

The number of requests processed by this request processor. For intermediate records this data indicates the number of requests since the last intermediate record. For total records this data indicates the total number of requests processed during this run of the server.

CPU Processing Time

The amount of CPU time used by this request processor. For intermediate records this data indicates the amount of CPU time since the last intermediate record. For total records this data indicates the total amount of CPU time used by this request processor during this run of the server.

Elapsed Time

The amount of elapsed time spent processing requests. For intermediate records this data indicates the amount of elapsed time since the last intermediate record. For total records this data indicates the total amount of elapsed time used by this request processor during this run of the server.

Bytes Sent

The total amount of data sent by the request processor. For intermediate records this data indicates the number of bytes sent since the last intermediate record. For total records this data indicates the total amount of data sent by this request processor during this run of the server.

Bytes Received

The total amount of data received by the request processor. For intermediate records this data indicates the number of bytes received since the last intermediate record. For total records this data indicates the total amount of data received by this request processor during this run of the server.

The Server User Profile requires Read, Write and eXecute authorities for the directories containing the statistics log files.