big values in graphs

[ProTON]

I have a graph where I monitor filesystem usage on one of my hard disk arrays. If I select 1 or 2 days worth of data, it is shown correctly. I see 5.2TB usage and this is true. However, when I select 3 or more days graph shows only ~930GB usage.

Item configuration is as follows:
Numeric (64bits)
Bytes
Custom multiplier of 8192
Store value as is
Show value as is

[bbrendon]

I have a windows volume that has 1.8 TB free. 24 hour graph is fine but a 1 week graph shows 930 GB, which is definitely wrong.

Anyone know whats up with this?

[ProTON]

I think PHP backend is hitting the top somewhere. From the PHP manual "The maximum signed integer value for 64 bit systems is 9223372036854775807."

[James Wells]

Greetings,

Are you storing the data as a differential or as is?

[Alexei]

I have a windows volume that has 1.8 TB free. 24 hour graph is fine but a 1 week graph shows 930 GB, which is definitely wrong.

Anyone know whats up with this?

May I ask for a couple of screenshots, 24h and 1 week? Thanks.

[ProTON]

Data stored as is.

Screenshots attached.

[bbrendon]

Hah. My Weekview is exactly the same. The green line is at 931.32 as well as min, max, and last.

I store it as it.

Stored as is, Integer, units are "B"

[ProTON]

Patch submitted at http://www.zabbix.com/forum/showthread.php?p=21350

Cheers!