Memory usage is wrong (usage vs cache)? about check_docker

[tatref]

Further digging into the API, I found the following:

    "memory_stats": {
        "stats": {
            "cache": 477356032,
            "rss": 345579520,
        },
        "usage": 822935552
    },

I'm not sure how to fix this properly though.

What do you thing about taking just rss? or usage - cache?

[tatref]

I did the following change under check_memory:

    usage = inspection['memory_stats']['usage'] / UNIT_ADJUSTMENTS[units]
    cache = inspection['memory_stats']['stats']['cache'] / UNIT_ADJUSTMENTS[units]
    real_usage = usage - cache

Here is the check output:

OK: prd-piwik-mysql memory is 353.640625m|prd-piwik-mysql_mem=353.640625m;500;1000;0;2935.87890625

Compared with docker stats:

MEM USAGE / LIMIT     MEM %
353.6MiB / 2.867GiB   12.05%

[tatref]

Oups, I just realized you fixed this a while ago!

[timdaman]

Oh, sorry. I didn't realize that you were reporting the same issue. Glad it is working for you now.