Performance Metric kcml.total.io

Summary

Total file & network I/O

Send Condition

Program LOAD, SOAP server method calls & $END. Periodically from KDB/KISAM or native file I/O operations, form events, $BREAK, $IF & 'KCML_poll()

Overview

This periodic metric produces statistics that indicate the partition's overall network, KDB/KISAM, native file I/O & KClient traffic. KCML partitions that are acting as a SOAP or HTTP server objects include the request & response I/O in the TCP network statistics as is the network traffic sent between the ODBC server & driver. When the KDB/KISAM, native, TCP or UDP statistics seem abnormally high then the kcml.kdb.io, kcml.native.io, kcml.tcp.io or kcml.udp.send & kcml.udp.recv metric can be used to identify the table, file or network connection that has high activity. The nativehdlcnt & dbhdlcnt statistics are the current number of stream & database handles that have been allocated. For children of $RELEASE initial values of these two statistics will have been inherited from the parent partition.

Statistics

Name	Type	Description
nread	count	Number of read system calls
readbytes	count	Number of bytes read
nwrite	count	Number of write system calls
writebytes	count	Number of bytes written
nreadkdb	count	Number of KDB/KISAM read system calls
readbyteskdb	count	Number of KDB/KISAM bytes read
nwritekdb	count	Number of KDB/KISAM write system calls
writebyteskdb	count	Number of KDB/KISAM bytes written
nreadnative	count	Number of native read system calls
readbytesnative	count	Number of native bytes read
nwritenative	count	Number of native write system calls
writebytesnative	count	Number of native bytes written
nreadtcp	count	Number of TCP recv system calls
readbytestcp	count	Number of TCP bytes received
nwritetcp	count	Number of TCP send system calls
writebytestcp	count	Number of TCP bytes sent
nreadudp	count	Number of UDP recvfrom system calls
readbytesudp	count	Number of UDP bytes received
nwriteudp	count	Number of UDP sendto system calls
writebytesudp	count	Number of UDP bytes sent
readbyteskclient	count	Number of bytes received from KClient
writebyteskclient	count	Number of bytes sent to KClient
cachedrows	count	Number of rows read from cached tables
nativehdlcnt	count	Current number of allocated native stream handles
dbhdlcnt	count	Current number of allocated database handles (KDB, Oracle and PostgreSQL)

General Form

kcml.total.io,nread=count,readbytes=count,nwrite=count,writebytes=count,nreadkdb=count,readbyteskdb=count,nwritekdb=count,writebyteskdb=count,nreadnative=count,readbytesnative=count,nwritenative=count,writebytesnative=count,nreadtcp=count,readbytestcp=count,nwritetcp=count,writebytestcp=count,nreadudp=count,readbytesudp=count,nwriteudp=count,writebytesudp=count,readbyteskclient=count,writebyteskclient=count,cachedrows=count,nativehdlcnt=count,dbhdlcnt=count