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This project is used to fix bugs and enhance features for nmon.

1.Bug Fixes

1.1. BUG1: Main process initialization synchronization when nmon works in loging (not cursed) mode.

Problem

When nmon works in loging mode (for example using the parameter -f or -F), the main process returns before the child process has completed initialization.

In some cases, for example in our docker test environment, the following command takes 20 seconds to return.

linux_bbbp("netstat -r", "/bin/netstat -r 2>/dev/null", WARNING);

So, there is no sampled data during this period, and it is difficult for callers to know the actual start time of sampling.

Solution

Set up a semaphore, then post semaphore after the child process is initialized. The main process returns and prints the PID after receiving the semaphore.

Fixing Log

Already fixed.

2. Compile

See the makefile file for details.

Many kinds of target platforms are predefined in makefile. Please modify makefile first to keep only the target platform definitions and delete other definitions.

For example, if you need to compile the Red Hat 7 platform program, the makefile is as follows:

CFLAGS=-g -O3 -Wall
LDFLAGS=-lncurses -lm -lpthread
FILE=lmon16n.c

nmon_x86_rhel7: $(FILE)
	cc -o nmon_x86_rhel7 $(FILE) $(CFLAGS) $(LDFLAGS) -D X86 -D RHEL7

Then, do the make command.

3. Original Project Informations

Official website for original nmon project: http://nmon.sourceforge.net

4. Open Source License

GNU General Public License version 3.0 (GPLv3)

Scripted by FairyFar. www.200yi.com