a83e90b560
Future work toward visualization of DevStack and devstack-gate performance would benefit greatly from the availability of machine-parsable DStat output. This patch outputs an additional logfile to $LOGDIR, `dstat-csv.log`, using DStat's built-in CSV logging functionality. An additional instance of DStat is started during start_dstat that outputs to CSV-formatted text without `--top-cpu-adv` and `-top-io-adv` enabled, as these plugins are currently incompatible with CSV output. To facilitate this, a new `dstat.sh` script is added to $TOP_DIR/tools/ to act as a daemon to manage the two processes. Change-Id: I826c94c35b6a109308b4f132c181ff7a1f63bc7b Depends-On: I534fb1f9356a7948d2fec0aecc7f275e47362a11
33 lines
1006 B
Bash
Executable File
33 lines
1006 B
Bash
Executable File
#!/bin/bash
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# **tools/dstat.sh** - Execute instances of DStat to log system load info
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#
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# Multiple instances of DStat are executed in order to take advantage of
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# incompatible features, particularly CSV output and the "top-cpu-adv" and
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# "top-io-adv" flags.
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#
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# Assumes:
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# - dstat command is installed
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# Retreive log directory as argument from calling script.
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LOGDIR=$1
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# Command line arguments for primary DStat process.
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DSTAT_OPTS="-tcmndrylpg --top-cpu-adv --top-io-adv"
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# Command-line arguments for secondary background DStat process.
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DSTAT_CSV_OPTS="-tcmndrylpg --output $LOGDIR/dstat-csv.log"
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# Execute and background the secondary dstat process and discard its output.
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dstat $DSTAT_CSV_OPTS >& /dev/null &
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# Execute and background the primary dstat process, but keep its output in this
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# TTY.
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dstat $DSTAT_OPTS &
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# Catch any exit signals, making sure to also terminate any child processes.
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trap "kill -- -$$" EXIT
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# Keep this script running as long as child dstat processes are alive.
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wait
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