Warnaud's Wiki

Ultimate tool for monitoring, SAR is available in sysstat package.

Some tips I use:

1. Convert from binary to text (to import on kSar for example)

   /usr/bin/env LC_TIME=POSIX sar -A -f saXX > saXX.txt

   binary format is not supported anymore… you will need an old system/VM to do so.
   
   The POSIX time is to avoid AM/PM in the txt file and avoid kSar error:

    java.lang.NumberFormatException: For input string: "all"
           at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1250)
           at java.lang.Float.valueOf(Float.java:417)
           at java.lang.Float.<init>(Float.java:519)
           at net.atomique.ksar.Linux.Parser.parse(Parser.java:624)
           at net.atomique.ksar.kSar.parse(kSar.java:750)
           at net.atomique.ksar.FileRead.run(FileRead.java:62)

2. Time convert, if kSar complains about time stamps:

   java.lang.NumberFormatException: For input string: "all"
           at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1250)
           at java.lang.Float.valueOf(Float.java:417)
           at java.lang.Float.<init>(Float.java:519)
           at net.atomique.ksar.Linux.Parser.parse(Parser.java:624)
           at net.atomique.ksar.kSar.parse(kSar.java:750)
           at net.atomique.ksar.FileRead.run(FileRead.java:62)

   You need to convert the file with POSIX time stamps using Perl:

   #!/usr/bin/env perl
    
   use strict;
   use warnings;
    
   use Time::Piece;
    
   while (<>) {
       if ( my ($time_str) = m/^([\d\:]+ [AP]M)/ ) {
           my $new_time_str = Time::Piece->strptime( $time_str, "%I:%M:%S %p" )
               ->strftime("%H:%M:%S");
           s/$time_str/$new_time_str/;
       }
       print;
   }

   Reference: http://unix.stackexchange.com/questions/227991/change-time-format-in-a-file