Rrdtool update slow

Sometimes the requirements are a bit more sophisticated. Also often seen is a timestamp, in "seconds since the epoch". This can be used for many purposes. I'll name a few, but there will be many more cases where this can be used:. Two other methods exist: a negative number, which means "n seconds ago", useful if you know there is a fixed amount of delay between when the number was valid and inserting it in the database, and a timestamp according to the AT STYLE time specification as explained in the rrdtool fetch documentation.

Most people will know how many datasources they have in their database, and in what order these were defined see rrdtool create. In that case just list each datasource in that order.

If you don't know in which order the datasources should be presented, yet you do know which datasources are present and you also happen to know their name, you can tell RRDtool in which order you are going to give the data by use of the template parameter.

I don't really see why this is useful you know much of the layout, yet one detail is unknown? If you know you don't know a number, you still do know something. You can tell RRDtool a data source is unknown by giving it "U" as its value. Connect and share knowledge within a single location that is structured and easy to search.

I have a strange issue with 2 rra files, each time I try to update them rrdtool update never finishes. If I divide the result by then it outputs the right values, and rrdtool updates successfully. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 6 years, 7 months ago. Active 6 years, 7 months ago. Do I need writable cache dir for http user?

But I am still confused. Something feels not quite right. I guess your regular user has such as well? You can also look at the cached files written there - they're binary but contain meaningfull strings font names, paths, etc. Well, regular user might have custom fonts or fontconfig settings, but http user does not seem to have these:.

These files are different in just a couple of bytes:. Atom topic feed. Arch Linux.