info about FileSystem.UsedPerc dci from netxms agent

[tivanni]

Hi guys!

I have a centos server with agent installed (1.2.13) and I use the agent to get the percentage of used space on a specific file system (using parameter FileSystem.UsedPerc()).

If I check the filesystem used space using the command "df" i got a value, while FileSystem.UsedPerc return a different value.

I know that sometimes the output of df is not up to date, but i'd like to know how the agent get the FileSystem.UsedPerc...This filesystem have a huge number of file, so i can't use the command du because it takes about an hour

Is the value returned from netxms agent more updated of the value obtained through "df"?

Thank you for the help!

[victor]

Hi,

how big is the difference? Also, in version 1.2.14 there was a fix in Linux agent in file system percentage calculation (before that fix percentage was always rounded down, so 3.99 would become 3.00 for example).

Best regards,
Victor

[tivanni]

It's fixed to 6%!

Yesterday Df said that filesystem's used space is 86% while netxms agent report 80%. Today df say 73% and the agent 68%.

[victor]

I suppose that df may report percentage of total space - reserved space used (so you actually can see 101% use in df for example). NetXMS agent returns percentage of used total space. You can see the difference by comparing FileSystem.Free/FileSystem.FreePerc with FileSystem.Avail/FileSystem.AvailPerc.

Best regards,
Victor