cloud engineer
Here are a few utilities that monitor disk I/O performance.
iostat -d 5 pidstat -dl 20 iotop --only |
The alternative is atop, which you can set to run every 10 seconds for 3 hours. The output can be viewed later.
atop -a -w logfile.atop 10 10800 & |
Use atop to read the log file.
atop -r /path/to/logfile.atop |
iotop is a Linux command similar to top but instead of CPU and memory it will display and monitor your disk IO usage.
To install, run the following command based on your Linux ditro.
yum install iotop apt install iotop dnf install iotop |
To use.
iotop
iotop -o |
Output:
If the EFS mount is unresponsive, try using this …
/bin/ls -1f |
This is an issue with having too many small files in a directory. This can be fixed by sharding files to multiple sub-directories.