How am I suppose to know what's running?

haphan

As title.
CPU usage is sorted desc

Francisco

given all of the pop3/etc, you're likely getting flooded by brutes.

Francisco

haphan

thanks @Francisco, but how do you explain the CPU utilization?

btw, my.frantech.ca is down

Francisco

Yes I know, I'm in the midst of updating the hardware

Francisco

Lm85H4gFkh3wk3

A possibility is that there are enough processes spawned off (as a result of thebrute force flood) to push you over your physical RAM limit, and now the system is thrashing moving pages in and out of swap.

haphan

@rajprakash said: A possibility is that there are enough processes spawned off (as a result of thebrute force flood) to push you over your physical RAM limit, and now the system is thrashing moving pages in and out of swap.

Actually dovecot processes are not what I concern but the CPU usage. Htop reports 4 cores are maxed out while I see no process is using CPU at all hence my post here

Kairus

@haphan said: Htop reports 4 cores are maxed out while I see no process is using CPU at all hence my post here

What does regular top show?

Damian

What's the output of

cat /proc/cpuinfo

yomero

That sounds to me like heavy abusers in the same node.

haphan

@Kairus said: What does regular top show?

Pretty much the same.

@Damian said: What's the output of

[root@server scripts]# cat /proc/cpuinfo | grep GHz
model name      : Intel(R) Xeon(R) CPU           E5520  @ 2.27GHz
model name      : Intel(R) Xeon(R) CPU           E5520  @ 2.27GHz
model name      : Intel(R) Xeon(R) CPU           E5520  @ 2.27GHz
model name      : Intel(R) Xeon(R) CPU           E5520  @ 2.27GHz

@yomero said: That sounds to me like heavy abusers in the same node.

I lean toward this assumption but I just don't understand why htop reports usage of another container?

yomero

@haphan said: I lean toward this assumption but I just don't understand why htop reports usage of another container?

No, isn't another container. The CPU time that you are able to use is so small, then every proces that you run uses all the cpu.

But is just a theory.
I guess you already submitted a ticket or something

What shows top in the row

Cpu(s):  0.3%us,  0.2%sy,  0.0%ni, 99.5%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st

?

Lm85H4gFkh3wk3

@haphan I wasn't saying that the processes that are spawned off themselves are using CPU, I was implying that the system itself is burning up CPU cycles paging in and out of swap to support those zombie'ish processes.