What is the Apache Scoreboard?

As a request comes in, it is denoted in the scoreboard. The scoreboard itself is basically a way to keep track of each incoming, waiting, and completing connections. These connections are broken down into the following types:

  1. “_” Waiting for Connection
  2. “S” Starting up
  3. “R” Reading Request
  4. “W” Sending Reply
  5. “K” Keepalive (read)
  6. “D” DNS Lookup
  7. “C” Closing connection
  8. “L” Logging
  9. “G” Gracefully finishing
  10. “I” Idle cleanup of worker
  11. “.” Open slot with no current process

Here is an example of the apache scoreboard in WHM:

(22:06 root@host) > service httpd status
                      Apache Server Status for localhost

   Server Version: Apache/2.2.26 (Unix) mod_ssl/2.2.26
          OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

   Server Built: Mar 7 2014 08:09:21
     _________________________________________________________________

   Current Time: Tuesday, 15-Jul-2014 22:08:36 MST
   Restart Time: Tuesday, 15-Jul-2014 13:44:12 MST
   Parent Server Generation: 4
   Server uptime: 8 hours 24 minutes 24 seconds
   Total accesses: 58665 - Total Traffic: 173.3 MB
   CPU Usage: u9.9 s5.84 cu114.75 cs0 - .431% CPU load
   1.94 requests/sec - 5.9 kB/second - 3098 B/request
   104 requests currently being processed, 9 idle workers

GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG_GGG_GG_____W...__............
................................................................
................................................................

   Scoreboard Key:
   "_" Waiting for Connection, "S" Starting up, "R" Reading Request,
   "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
   "C" Closing connection, "L" Logging, "G" Gracefully finishing,
   "I" Idle cleanup of worker, "." Open slot with no current process

g33kadmin

I am a g33k, Linux blogger, developer, student and Tech Writer for Liquidweb.com/kb. My passion for all things tech drives my hunt for all the coolz. I often need a vacation after I get back from vacation....

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