cPanel Backup /LDF causing 30+ load

[Piers]

I've been trying to work out why cPanel backups (New and Legacy) are causing massive load spikes making my server unusable. So far, with the help of cPanel support, it's been narrowed down to lfd.

They installed a system snapshot script to monitor the services, I then reported at the moment the spikes were happening. They used this information to check which service has been causing the issues.

Here's a ~15 minutes output

Code: Select all

00.log:Sat Jun 8 01:00:29 BST 2013 01 00 --> load: 0.57 0.41 0.41 1/311 546562
01.log:Sat Jun 8 01:01:38 BST 2013 01 01 --> load: 1.36 0.66 0.49 1/312 546911
02.log:Sat Jun 8 01:02:48 BST 2013 01 02 --> load: 5.20 1.69 0.85 1/359 547144
03.log:Sat Jun 8 01:03:57 BST 2013 01 03 --> load: 14.67 5.25 2.14 1/419 547273
05.log:Sat Jun 8 01:05:06 BST 2013 01 05 --> load: 9.61 5.83 2.58 1/356 547470
06.log:Sat Jun 8 01:06:16 BST 2013 01 06 --> load: 9.04 6.47 3.04 1/428 547687
07.log:Sat Jun 8 01:07:25 BST 2013 01 07 --> load: 10.28 7.34 3.58 1/537 547921
08.log:Sat Jun 8 01:08:43 BST 2013 01 08 --> load: 8.51 7.51 3.93 1/452 548095
11.log:Sat Jun 8 01:11:31 BST 2013 01 11 --> load: 22.58 17.20 8.37 1/558 548564
12.log:Sat Jun 8 01:12:41 BST 2013 01 12 --> load: 20.72 17.32 9.02 8/610 548797
13.log:Sat Jun 8 01:13:52 BST 2013 01 13 --> load: 7.25 13.97 8.46 1/453 548993
15.log:Sat Jun 8 01:15:01 BST 2013 01 15 --> load: 2.31 11.08 7.85 1/408 549170
16.log:Sat Jun 8 01:16:10 BST 2013 01 16 --> load: 1.15 8.89 7.33 1/380 549450
17.log:Sat Jun 8 01:17:19 BST 2013 01 17 --> load: 1.40 7.40 6.91 1/390 549709

And here's further information

Code: Select all

[root@417873901]cPs# grep lfd 02.log | wc -l
19
[root@417873901]cPs# grep lfd 03.log | wc -l
35
[root@417873901]cPs# grep lfd 05.log | wc -l
19
[root@417873901]cPs# grep lfd 06.log | wc -l
19
[root@417873901]cPs# grep lfd 07.log | wc -l
6
[root@417873901]cPs# grep lfd 08.log | wc -l
1
[root@417873901]cPs# grep lfd 11.log | wc -l
27
[root@417873901]cPs# grep lfd 12.log | wc -l
6

It does appear that lfd is causing the problem, however I'm not familiar with lfd as you are, or as cPanel staff.

Does anyone have an idea as to what the issue might be?

Thank you,

Piers

[Piers]

Why are my posts being removed? cPanel is also curious why CSF would cause this, I would have thought that a developer might have a clue... maybe not.

I'm sure this post will also be deleted.

[Piers]

I'm guessing no answer after 10 days means the devs have no idea, which is a shame.