I’m running the TICK image on Digital Ocean. I set this up as a logging server for a web application I run. It worked great originally, but over time I noticed performance in Chronograph tanking. About a month ago my web application was unable to send cURL requests to Influx and I was getting all so…

What is your series cardinality? Sometimes this can make a difference in memory usage.

> show series cardinality cardinality estimation ---------------------- 18422 > show series exact cardinality name: api_log (this one has 12M records) count ----- 191 name: api_log_cq_date count ----- 63 name: api_log_cq_hour count ----- 64 name: otherservice_api_log (this one has 8M records) co…

Hi @katy , just wanted to see if you had any other thoughts on this one. Thank you!

Thanks for your patience! I’m looking into it now. Your cardinality isn’t too high, so that should be okay. Sometimes, people limit the amount of memory InfluxDB can use because of this, but I’m chatting with the team to see what we can do.

Important: I had to get this up and running so I dropped the measurement with 8M records (otherservice_api_log). This dropped my memory usage from something like 1.2GB to maybe 800MB. It’s risen a bit since then. I still have this server configured to 2GB of memory but I would like to bring it back …

Hi @ziebelje , According to pmap, InfuxDB is using 347MB of RAM, which is close to the 35.3% of the 908MiB of RAM in use, as seen in htop. I’d say the pmap and htop where at sightly different times, hence the small discrepancy.

It’s actually using 703M. The RES column from htop specifies the actual amount of physical memory in use. That is 77% of the in-use memory and 35% of the available memory. I’m not sure how to interpret the pmap results. At the bottom it seems to indicate that nearly 3G is in use. I know this is ap…

RES is the resident set size, which includes mmapped memory which is available to the kernel and other processes; it is not locked up by InfuxDB. The total at the bottom of pmap shows 347MiB is used by InfuxDB

It’s important to remember, InfuxDB will use whatever memory is available to it in order to optimise reads and writes. If you wish, you can try to create a cgroup to restrict it; but from what I can see - your install will run fine with 1GiB. I’d recommend reducing it again and if your get lockups…

How can I reduce the memory usage of InfluxDB 1.7.2

katy August 16, 2019, 7:18pm 6

Can you pmap the process @ziebelje ?

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How can I reduce the memory usage of InfluxDB 1.7.2

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