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How much CPU/RAM resources are used?

April 26, 2017CPU RAM Resources Used

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How much CPU/RAM resources are used?

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In our environment (ca. 500 TiB, 25 million files, 2 million folders distributed on 26 million chunks on 70 machines) the usage of chunkserver CPU (by constant file transfer) is about 15-20% and chunkserver RAM usually consumes about 100MiB (independent of amount of data). The master server consumes about 30% of CPU (ca. 1500 operations per second) and 8GiB RAM. CPU load depends on amount of operations and RAM on the total number of files and folders, not the total size of the files themselves. The RAM usage is proportional to the number of entries in the file system because the master server process keeps the entire metadata cached in memory for performance.