topic Incorrect Used memory metric in Open Q&A

Incorrect Used memory metric

vladislav_samoy — Wed, 20 Feb 2019 10:00:40 GMT

Hi all

Can anybody explain why Dynatrace shows different Used memory memory than OS does?

Thanks in advance

Dynatrace screen

OS top and free -h screens

franz_soengen — Wed, 20 Feb 2019 12:31:09 GMT

Hi Vladyslav,

Under linux:

used = total – free – buff/cache

While Dynatrace calculates used memory as:

used = MemTotal - MemAvailable

In your case: 3.7GB - 2.1GB = 1.6GB (the value that's displayed in Dynatrace)

best regards
Franz

vladislav_samoy — Wed, 20 Feb 2019 13:04:01 GMT

Thanks Franz