Operating System & Version
Centos

ffeingol

Well-Known Member
PartnerNOC
Nov 9, 2001
529
158
343
cPanel Access Level
DataCenter Provider
Hello,

WA is IO wait time. That means the server is waiting to read/write. Unless you are collocating the equipment, that's prob. something you need to talk to your provider about.
 

Taufik Rizki

Member
Jun 22, 2020
11
0
1
Depok
cPanel Access Level
Root Administrator
Hello,

WA is IO wait time. That means the server is waiting to read/write. Unless you are collocating the equipment, that's prob. something you need to talk to your provider about.
I request you to check the i/o on server. check the output of iotop -o
I tried to run the command "sar" and the following information appears:

1603662017738.png


from the information, please help to solve this problem. What steps should I take?
 

cPanelBrianK

Technical Analyst III
Staff member
Sep 5, 2018
22
5
78
Houston
cPanel Access Level
Root Administrator
I am sorry to see that you are experiencing high I/O wait times on your server @Taufik Rizki. To better understand the issue you are facing, I advise reviewing the following articles.

What is considered high I/O?

What is IOWait relative to the sar command and when should I be concerned?


When reviewing drive wait time spikes, it is important to determine what processes or write tasks are causing this. While the provided information is not enough to determine this information, we do have the following articles that detail how you can review this type of behavior.

How to diagnose high I/O and high load with iotop

How to diagnose high loads with the "iostat" command