Redhat Linux Performance-built-in SAR

• Default/Default Redhat Linux automatically uses SAR to capture system performance information and logs it to/var/log/sa
• Collect every 10 minutes and record cpu/memory/disk/network
• 2 files per day, such as number 13th, will produce sa13 and Sar13 2 files
  
  
• Sar13
  • Direct interpretation of documents
• Sa13
  • You need to use a command to convert the output into a readable format
• Sa13 and Sar13 relations
• Sar-a sa13 > Sar13
  
  
• If you need to collect yourself
  • For example, every 30 seconds to collect server performance information, acquisition 5 days.
  • Sar-a-o perf.data 14400 >/dev/null &

• SAR command uses man SAR or http://linuxcommand.org/man_pages/sar1.html

Redhat Linux Performance-built-in SAR