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Nice plugin. I added a check to paging statistics to check for major faults. diff follows.

--- check_linux_stats.pl 2015-09-11 12:22:42.977785368 -0500
+++ check_linux_stats.pl.orig 2015-08-21 09:11:02.000000000 -0500
@@ -533,22 +533,21 @@
if(defined($stat->pgswstats)) {
$status = "OK";
my $page = $stat->pgswstats;
- my ($warn_in,$warn_out,$warn_flt) = split(/,/,$o_warning);
- my ($crit_in,$crit_out,$crit_flt) = split(/,/,$o_critical);
- if((($page->{pgpgin}>=$crit_in)&&($page->{pgpgout}>=$crit_out))||($page->{pgmajfault}>=$crit_flt)) {
+ my ($warn_in,$warn_out) = split(/,/,$o_warning);
+ my ($crit_in,$crit_out) = split(/,/,$o_critical);
+ if(($page->{pgpgin}>=$crit_in)||($page->{pgpgout}>=$crit_out)) {
$status = "CRITICAL";
}
- elsif((($page->{pgpgin}>=$warn_in)&&($page->{pgpgout}>=$warn_out))||($page->{pgmajfault}>=$warn_flt)) {
+ elsif(($page->{pgpgin}>=$warn_in)||($page->{pgpgout}>=$warn_out)) {
$status = "WARNING";
}

my $perfdata = "|"
."pgpgin=$page->{pgpgin};$warn_in;$crit_in;0 "
."pgpgout=$page->{pgpgout};$warn_out;$crit_out;0 "
- ."pgmajfault=$page->{pgmajfault};$warn_flt;$crit_flt;0 "
."pswpin=$page->{pswpin} pswpout=$page->{pswpout}";

- print "Paging $status : in:$page->{pgpgin},out:$page->{pgpgout},flt:$page->{pgmajfault} $perfdata";
+ print "Paging $status : in:$page->{pgpgin},out:$page->{pgpgout} $perfdata";
}
else {
print "No data";
@@ -627,7 +626,7 @@
Cpu usage : perl check_linux_stats.pl -C -w 90 -c 95 -s 5
Disk usage : perl check_linux_stats.pl -D -w 95 -c 100 -u % -p /tmp,/usr,/var
Load average : perl check_linux_stats.pl -L -w 10,8,5 -c 20,18,15
- Paging statistics : perl check_linux_stats.pl -W -w 10,1000,1 -c 20,2000,20 -s 3
+ Paging statistics : perl check_linux_stats.pl -W -w 10,1000 -c 20,2000 -s 3
Process statistics : perl check_linux_stats.pl -P -w 100 -c 200
I/O statistics on disk device : perl check_linux_stats.pl -I -w 10 -c 5 -p sda1,sda4,sda5,sda6
Network usage : perl check_linux_stats.pl -N -w 10000 -c 100000000 -p eth0