Liew CheonFong
Basic Pleskian
Server: Plesk Onyx 17.0.17 , Ubuntu 16.04
Randomly, Health Manager send high CPU alarm emails and the top processes are "sw-engine". The "Load Average" looks ok (under 0.5) from the report and server serves websites well. No problem except receiving the alarms.
What does sw-engine do? Why is it has spikes loaf? Any idea how to "tame" it? Thank you.
Here's the sample report (part) i received in email:
Randomly, Health Manager send high CPU alarm emails and the top processes are "sw-engine". The "Load Average" looks ok (under 0.5) from the report and server serves websites well. No problem except receiving the alarms.
What does sw-engine do? Why is it has spikes loaf? Any idea how to "tame" it? Thank you.
Here's the sample report (part) i received in email:
Code:
Server health parameter "Services > Apache CPU usage" changed its status from "green" to "red".
top - 20:01:08 up 13 days, 17:05, 0 users, load average: 0.23, 0.37, 0.39
Tasks: 184 total, 6 running, 178 sleeping, 0 stopped, 0 zombie
%Cpu(s): 3.1 us, 0.8 sy, 0.1 ni, 95.8 id, 0.1 wa, 0.0 hi, 0.0 si, 0.2 st
KiB Mem : 4043436 total, 957996 free, 1034768 used, 2050672 buff/cache
KiB Swap: 524284 total, 333248 free, 191036 used. 2631188 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1255 psaadm 20 0 297852 49132 37876 R 44.4 1.2 0:00.08 sw-engine
1256 psaadm 20 0 297852 49320 37812 R 44.4 1.2 0:00.08 sw-engine
1257 psaadm 20 0 292512 40748 34420 R 27.8 1.0 0:00.05 sw-engine
1258 psaadm 20 0 283140 37072 31928 R 27.8 0.9 0:00.05 sw-engine
1259 psaadm 20 0 282876 36344 31428 R 22.2 0.9 0:00.04 sw-engine
1 root 20 0 186444 6780 3952 S 0.0 0.2 8:25.74 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.37 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:18.28 ksoftirqd/0
5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:+
7 root 20 0 0 0 0 S 0.0 0.0 7:47.57 rcu_sched
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
9 root rt 0 0 0 0 S 0.0 0.0 0:02.97 migration/0
10 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 lru-add-dr+
11 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/0
12 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/1
13 root rt 0 0 0 0 S 0.0 0.0 0:02.96 migration/1
14 root 20 0 0 0 0 S 0.0 0.0 0:20.89 ksoftirqd/1