Influx DB: don't unneccessarily truncate timestamps to whole seconds

[Al2Klimov]

Instead send timestamps with the highest possible precision (ns). Useful for check intervals <1s.

Before/after

> select * from dummy;
name: dummy
time                hostname metric value
----                -------- ------ -----
1669634632000000000 p/d      lolcat 1
1669634633000000000 p/d      lolcat 1
1669634634000000000 p/d      lolcat 1
1669634635000000000 p/d      lolcat 1
1669634636000000000 p/d      lolcat 1
1669634637000000000 p/d      lolcat 1
1669634638000000000 p/d      lolcat 1
1669634639000000000 p/d      lolcat 1
1669634640000000000 p/d      lolcat 1
1669634641000000000 p/d      lolcat 1
1669634642000000000 p/d      lolcat 1
1669634643000000000 p/d      lolcat 1
1669634644000000000 p/d      lolcat 1
1669634645000000000 p/d      lolcat 1
1669634646000000000 p/d      lolcat 1
1669634647000000000 p/d      lolcat 1
1669634648000000000 p/d      lolcat 1
1669634649000000000 p/d      lolcat 1
1669634650000000000 p/d      lolcat 1
1669634651000000000 p/d      lolcat 1
1669634746813241856 p/d      lolcat 1
1669634747819243008 p/d      lolcat 1
1669634748829480960 p/d      lolcat 1
1669634749837472000 p/d      lolcat 1
1669634750845353984 p/d      lolcat 1
1669634751851262208 p/d      lolcat 1
1669634752858226944 p/d      lolcat 1
1669634753866256896 p/d      lolcat 1
1669634754875664896 p/d      lolcat 1
1669634755882136064 p/d      lolcat 1
1669634756890747136 p/d      lolcat 1
1669634757899697152 p/d      lolcat 1
1669634758907682048 p/d      lolcat 1
1669634759919069952 p/d      lolcat 1
1669634760924881920 p/d      lolcat 1
1669634761930562048 p/d      lolcat 1
1669634762939232000 p/d      lolcat 1
1669634763945729024 p/d      lolcat 1
1669634764953383936 p/d      lolcat 1
1669634765961394944 p/d      lolcat 1
>

[julianbrost]

Does this have any impact on compatibility with InfluxDB, so for example, is there a minimum version required to pass timestamps in nanoseconds?

[Al2Klimov]

No, it's even the default.