Client

client's computer name or IP address.

Request

requested document name and path relative to server root

Srv

Child Server number - generation. The ID of the child process and its generation. The generation increases each time a child process is restarted, whether due to a server-restart or a limit placed on the number of processes a child is allowed to handle. See the MaxRequestsPerChild  directive.

PID

OS process ID

Acc

Number of accesses this connection / this child / this slot. The first number in this trio is the number of accesses or requests using this connection. For non-KeepAlive connections, this will be 0 since each request makes its own connection and so is always the first (and last). The second is the number of requests handled thus far by this child. The third is the number of requests handled by this slot; the child may have come and gone, its slot taken by another.

M

Mode of operation:

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

SS

Seconds since beginning of most recent request.

Req

Milliseconds taken to process the request

Conn

Kilobytes transferred across this connection

Child

Megabytes transferred by this child process

Slot

Total Megabytes transferred by this slot, across children

VHost

Perhaps your server hosts multiple virtual domains; how would you determine which page is being requested by GET /index.html?. The VHost column helps you sort out which request is coming to which virtual host -- in this example, www.mydomain.net.