org.bootchart.parser.linux

Class PacctParser

public class PacctParser extends Object

PacctParser parses the BSD process accounting v3 files. The accounting file contains information about process creation times, PIDs, PPIDs etc. It is used to get detailed information about process forks, filling in any dependency blanks caused by the polling nature of /proc/[PID]/top logging.

Method Summary
static List	getPPIDs(int pid, Map forkMap) Returns a list of all parent PIDs (parent, grandparent, etc.) for the specified PID.
static Map	parseLog(InputStream is) Parses the `pacct` accounting file.

Method Detail

getPPIDs

public static List getPPIDs(int pid, Map forkMap)

Returns a list of all parent PIDs (parent, grandparent, etc.) for the specified PID.

Parameters: pid the PID to get the PPIDs for forkMap fork map

Returns: a list of parent PIDs

parseLog

public static Map parseLog(InputStream is)

Parses the pacct accounting file. See include/linux/acct.h for format.

Parameters: is the input stream to parse

Returns: a map of Integer to Integer forks

Throws: IOException if an I/O error occurs