Line Graphs with blanks

[tocchetto]

Hi all,

1) The problem

Some graphs automatic generated in the section "Latest data" in the Monitoring Section are build with some blank spaces. Here a screenshot:

http://picasaweb.google.com/tocchetto/Zabbix?authkey=M1_9WzU8ynM#5268602470379204386

It seens that the problem just happens with line style graphs, and just when I start to monitor more than 40 servers.

Other graphs do not show this problem, even with more than 40 server monitored.

http://picasaweb.google.com/tocchetto/Zabbix?authkey=M1_9WzU8ynM#5268603268996674226

2) Some info about my enviroment

Zabbix version 1.6
FreeBSD 7.0
Intel Quad Core Q6600 (2.40GHz, 2x4MB L2 Cache, 1066MHz)
4GB RAM

About the machine load:

last pid: 47995; load averages: 0.07, 0.11, 0.09
CPU states: 0.2% user, 0.1% nice, 0.6% system, 0.0% interrupt, 99.2% idle

Number of hosts (monitored/not monitored/templates) 102 54 / 0 / 48
Number of items (monitored/disabled/not supported) 2640 2597 / 1 / 42
Number of triggers (enabled/disabled)[true/unknown/false] 1109 1096 / 13 [13 / 216 / 867]
Required server performance, new values per second 120.9668 -

I think it is not a performance problem, as you can see, the machine is fine.

Anyone has any tip?

Thanks a lot!

Felipe

[pierre-hoffmann]

Hi,

Your first graph is a Windows Server ??
I've same problem : when Windows Server CPU is high no value
is return by Zabbix agent so there's hole is the graph.

Regards,
Pierre.

[tocchetto]

Hi Pierre,

The first graph is a Debian Linux it represents the CPU Idle time, it is about 90%. The second one is from the localhost, the Zabbix Server, a FreeBSD.

Thanks for your reply.

Cheers

Felipe

[tocchetto]

We did some tunning in my Zabbix and it seens that the problem of the blank graphs are solved, at least in CPU graphs.

Some screenshots after the configurations:

http://picasaweb.google.com/tocchetto/Zabbix?authkey=M1_9WzU8ynM#5274879234130294338

http://picasaweb.google.com/tocchetto/Zabbix?authkey=M1_9WzU8ynM#5274879226951370130

In network graphs, there are some blanks still, but it is much better now:

http://picasaweb.google.com/tocchetto/Zabbix?authkey=M1_9WzU8ynM#5274882841825246242

What we did:

zabbix_server.conf

Start more poolers:

StartPollers=20 - the default was 5. Maybe I don t need 20, but for the tests it was ok.

Housekeeping frequency:
HousekeepingFrequency=6 - the default was 1 (hour)

Increase the timeout:
Timeout=10

Connect the database using MySQL socket:
DBSocket=/tmp/mysql.sock

The machine load is higher:
load averages: 0.59, 0.76, 0.59

Some process are using more CPU:
32.2H 10.60% mysqld

-- Felipe Tocchetto