Just made a new ticket about the issue, ticket number HKT-65243-426
IP is in the ticket number.
Thank you for taking the problems seriously. We really appreciate that.
Hope I did not forget anything in the ticket description that was mentioned here:
We still experience a slower VPS. With extreme Loads every hour, peaking from 6.00 to over 27.00, every full hour.
The situation:
- VPS XYZ.XYZ.XYZ.XYZ has run great for 2.5 years, almost no major problems at all.
- Problems first showed up around december 2010
- Problems were solved after moving to a new Hardware node in January.
- Problems started again after a forced move to another Hardware Node in March. See ticket EFH-46114-423 about this.
- Problems remained. Tried a lot of things together with support.
- Monday March 28th the VPS has been ruibuild with latest CentOS and all accounts moved over, this caused a lot of troubles with e-mails and around 60 minutes of downtime during the day

- Today we still experience High Loads every full hour (9am 10am 11am 12pm 1pm 2pm and so on) and server is peaking above 1.00 a lot during the day. And as soon Loads are over 1.00 everyhitng gets slow, WHM, Webmail, Websites.
We have tried dozens of things, together with support:
- disable cron
- disable Apache (no sites)
- rebuild VPS
- rebuild Apache/PHP
- more memory
- Installing/Running RKhunter
- Monitoring for hours with top, w and ps, seeing the loads but NO CAUSE.
Support pointed in all different directions, but norhing actual solved the problem:
- There was abnormal load on the main node
- Another VPS on the server was was causing load on the node
- Your VPS is causing load
- Apache has been restarted
- Your VPS need a reboot
The VPS is not busy, it runs just over 50 account (and that is less than 12 months ago, when we had over 60 accounts running and then there were almost no problems at all)
.582 requests/sec - 5.6 kB/second - 9.5 kB/request
1 requests currently being processed, 9 idle workers
Our guess is something changed outside the VPS: the node hardware, the deviding of the resources, or the ammount of VPS's running on the hardware.
It is a fact that our VPS is performing much worse than ever before.
Here an output from top, from 20 minutes ago.
Code:
top - 10:05:10 up 2 days, 6:16, 1 user, load average: 10.47, 5.65, 2.66
Tasks: 66 total, 1 running, 63 sleeping, 0 stopped, 2 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni, 68.7%id, 31.3%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 524288k total, 232768k used, 291520k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 0k cached
PID USER Page Ranking NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
20081 root 15 0 2404 1072 820 R 2.0 0.2 7:36.48 top
1 root 18 0 2160 664 572 S 0.0 0.1 0:00.21 init
1324 root 17 0 15044 9036 2276 D 0.0 1.7 0:00.00 cpsrvd-ssl
1325 root 17 0 14852 8768 2240 D 0.0 1.7 0:00.00 cpsrvd-ssl
1359 root 20 0 5052 1504 860 S 0.0 0.3 0:00.00 crond
1361 root 20 0 2496 944 836 S 0.0 0.2 0:00.00 sh
1364 root 18 0 4484 1088 868 D 0.0 0.2 0:00.00 dcpumon
1506 root 17 0 14852 8764 2240 D 0.0 1.7 0:00.00 cpsrvd-ssl
2040 nobody 17 0 12972 4644 1680 S 0.0 0.9 0:00.03 httpd
3288 nobody 15 0 12972 4664 1680 S 0.0 0.9 0:00.01 httpd
5884 root 18 0 2156 712 548 S 0.0 0.1 0:02.76 dovecot
5885 root 18 0 2632 1060 832 S 0.0 0.2 0:02.77 dovecot-auth
7713 root 18 0 47440 40m 2936 S 0.0 7.9 0:09.41 spamd
9432 mailnull 15 0 10364 1148 656 S 0.0 0.2 0:00.10 exim
9437 nobody 16 0 12972 4648 1692 S 0.0 0.9 0:00.00 httpd
9504 root 15 0 40464 33m 2556 S 0.0 6.5 0:02.75 spamd
9735 nobody 16 0 12972 4648 1680 S 0.0 0.9 0:00.02 httpd
9941 nobody 18 0 0 0 0 Z 0.0 0.0 0:00.02 httpd <defunct>
12055 nobody 18 0 12972 4736 1788 S 0.0 0.9 0:00.02 httpd
13431 root 18 0 10192 2960 2368 S 0.0 0.6 1:23.11 sshd
14017 root 15 0 7980 5260 1796 S 0.0 1.0 0:00.13 leechprotect
15529 root 15 0 4972 2800 832 S 0.0 0.5 0:01.06 tailwatchd
15671 root 18 0 7196 1064 660 S 0.0 0.2 0:00.00 sshd
16373 root 18 0 3828 1520 1260 S 0.0 0.3 0:00.04 bash
17472 root 15 0 16828 13m 1380 S 0.0 2.6 0:08.43 lfd
17543 root 16 -4 2252 548 344 S 0.0 0.1 0:00.00 udevd
18121 root 16 0 1816 572 472 D 0.0 0.1 0:02.60 syslogd
18124 root 18 0 1764 400 332 S 0.0 0.1 0:00.01 klogd
18161 root 18 0 2836 876 704 S 0.0 0.2 0:00.00 xinetd
18363 dovecot 15 0 5320 2200 1768 S 0.0 0.4 0:00.14 imap-login
18364 dovecot 18 0 5408 2260 1768 S 0.0 0.4 0:01.12 imap-login
18372 dovecot 18 0 5332 2252 1780 S 0.0 0.4 0:00.31 pop3-login
19676 root 19 0 6072 4292 1324 S 0.0 0.8 0:00.07 queueprocd
20145 dovecot 18 0 5504 2420 1780 S 0.0 0.5 0:02.48 pop3-login
20413 root 18 0 4492 1124 568 S 0.0 0.2 0:00.77 crond
21625 root 16 0 6472 664 368 S 0.0 0.1 0:00.09 pure-ftpd
21628 root 18 0 6204 1224 980 S 0.0 0.2 0:00.01 pure-authd
22167 named 22 0 192m 6168 1988 S 0.0 1.2 0:19.42 named
23796 root 18 0 16828 12m 460 S 0.0 2.4 0:00.00 lfd
23816 root 18 0 2932 612 532 D 0.0 0.1 0:00.63 md5sum
24477 cpanelho 18 0 14980 8892 2252 S 0.0 1.7 0:00.02 cpsrvd-ssl
26504 root 15 0 12832 5284 2476 S 0.0 1.0 0:03.49 httpd
26532 root 18 0 6612 4916 1444 S 0.0 0.9 0:00.09 tailwatchd
28510 root 18 0 4124 2160 1076 S 0.0 0.4 0:00.01 cphulkd
28597 root 33 18 3900 1852 936 S 0.0 0.4 0:00.00 cpanellogd
28616 root 15 0 14756 7680 1260 S 0.0 1.5 0:09.21 cpsrvd-ssl
30312 nobody 18 0 12972 4776 1792 S 0.0 0.9 0:00.12 httpd
31945 root 21 0 2548 1136 980 S 0.0 0.2 0:00.00 mysqld_safe
31975 mysql 15 0 122m 18m 4084 S 0.0 3.7 0:41.30 mysqld
32062 nobody 18 0 12972 4312 1400 S 0.0 0.8 0:00.00 httpd
32089 nobody 16 0 12972 4392 1488 S 0.0 0.8 0:00.00 httpd
As you can see the VPS is almost doing nothing, CPU is nearly unused, Memory is over 50% free. And still the load average is: 10.47, 5.65, 2.66
All our clients will face the problems of slow responding (web)mail and websites with such a load. As you might know Google ranks websites partly on loadingspeed too.
This whole issue is a bad thing that needs to be solved.
All I can see at this moment is the current cpuunits (hardlimit) of the container is 1,200, this was much higher in the past. At least 2,000 if I am correct. Although I cannot say for sure this will solve the problems it will do something to the VPS.
Regards