第5章 Retrieving Metrics

• To list all metrics which were enabled when the archive file was created, enter the following command:

  pminfo --archive archive_file

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• To confirm the host and time period covered by an archive file, enter the following command:

  # pmdumplog -l archive_file

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Examples

• To list disk writes for each partition, over the time period covered by the archive file:

  # pmval --archive /var/log/pcp/pmlogger/satellite.example.com/20180816.00.10 \
    -f 1 disk.partitions.write

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• To list disk write operations per partition, with a two second interval, between the time period 14:00 and 14:15:

  # pmval --archive /var/log/pcp/pmlogger/satellite.example.com/20180816.00.10 \
    -d -t 2sec \
    -f 3 disk.partitions.write \
    -S @14:00 -T @14:15

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• To list average values of all performance metrics, including the time of minimum/maximum value and the actual minimum/maximum value, between the time period 14:00 and 14:30. To output the values in tabular formatting:

  # pmlogsummary /var/log/pcp/pmlogger/satellite.example.com/20180816.00.10 \
    -HlfiImM \
    -S @14:00 \
    -T @14:30 \
    disk.partitions.write \
    mem.freemem

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• To list system metrics stored in an archive, starting from 14:00. The metrics are displayed in a format similar to the top tool.

  # pcp --archive /var/log/pcp/pmlogger/satellite.example.com/20180816.00.10 \
    -S @14:00 \
    atop

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