Why is this process using 90-100% cpu?

[DavidRT]

Hi,
Can some one explain to me why one of my websites processes is at 100% cpu, but the server still has plenty of cpu available?

[studio4host]

as visible on the image you should check with user forgetme and what is running as process cwebp could be malware

[cinique]

A 5 second Google shows cwebp is a image compression technique that you have running through some application.
Huge server at least in terms of RAM, yet unable to debug.  Single partition, presumably SSD/NVMe storage. Double-
Hire a sysadmin, as well as a smaller well-tuned server and you'd likely save money.