HP Integrity NonStop H-Series Podręcznik Użytkownika Pobierz pdf (Strona 199)

HP NonStop Shadowbase Command Definitions

Consumer Command Descriptions

HP NonStop Shadowbase Command Reference Manual—785421-002

190

STP MESSAGE INFO (CLIENT) – This section shows information about

the messages sent to or received from a server on another system.

SENDS shows the total number of messages sent.

LAST MESSAGE TIME is the date and time the last message was sent.

CUR BUSY is the current number of messages that have been sent to the

server and not yet acknowledged. If this value is at or near the maximum

constantly, it could indicate a slow network or target process.

MAX BUSY is the greatest value CUR BUSY reached since the STATS values

began to accumulate.

MSG RATE is the average I/O throughput rate for inserts, updates, and

deletes based upon the target (stand-alone Consumer or HP Shadowbase

Other Servers) acknowledgements. MSG RATE is the throughput rate

(measured in operations per second) for operations processed by the

Consumer. MSG RATE measures the time from when the message is sent to

the target (stand-alone Consumer or HP Shadowbase Other Servers) until

the message is acknowledge by the target (stand-alone Consumer or HP

Shadowbase Other Servers). To differentiate MSG RATE from OPS/SEC,

OPS/SEC is average number of operations processed by the Consumer per

second. OPS/SEC measures the total time between each operation

(including idle time).

BPS OUT is the average bytes per second sent to the server.

TOTAL WAIT is the total number of seconds spent waiting when the

Consumer has a message to send, but is prevented from doing so by the

NETSENDMINWAIT value.

WAIT START TIME is the time the TOTAL WAIT began.

MIN SIZE is the size, in bytes, of the smallest message sent.

MAX SIZE is the size of the largest message.

AVG SIZE is the average size of the messages.

ACKD BPS shows the number of message bytes acknowledged per second

computed by dividing the DURATION into the ACKD BYTES. This

number reflects the approximate application level bytes-per-second that

HP Shadowbase is delivering to the target, and that is being fully

application level acknowledged (STP ACK received) on this

communication channel. It is a measure of how “fast” replication is

running.

BYTES SENT shows the total number of application level bytes sent using

STP mode to a server process. Note that this may include messages that

have yet to be acknowledged.

SEND TIME shows the amount of time the CONS has spent transmitting STP

message content to an STP server process. Since the CONS will

continue to issue sends for messages (via send_nw calls) and wait for the

corresponding AWAITIO event to return before continuing with other work,

this indicates how efficient tcp/ip is in accepting the data to be transmitted

to the target system. A large value here indicates that tcp/ip is taking a

long time to accept data that is to be sent, and this time is thus not

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