Running the Nytro Profiler On Linux : Running the Nytro Profiler in the Automatic Mode

Running the Nytro Profiler in the Automatic Mode

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To profile I/Os on the device (for example, /dev/sdb:/dev/sdga), type this command at the command prompt:

./NytroProfiler_64 -D /dev/sdb:/dev/sdga -CFG das -SZ 200:400 -O trace_out

Nytro Profiler runs until you press Ctrl+C on the keyboard. A trace.qt output file is generated.

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To profile I/Os on a device (for example, /dev/sdb:/dev/sdga) for a specified run time, type this command at the command prompt:

./NytroProfiler_64 -D /dev/sdb:/dev/sdga -CFG das -SZ 200:400 -W 10 -O trace

The trace.qt file is generated after the Nytro Profiler runs for 10 seconds.

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To set a start time for the trace collection on a device (for example, /dev/sdb:/dev/sdga), type this command at the command prompt:

./NytroProfiler_64 -D /dev/sdb:/dev/sdga -CFG das -SZ 200:400 -S 20 -O trace

Run the preceding command to start profiling after 20 minutes, and to stop, press Ctrl+C on the keyboard. The trace.qt file is generated.

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To use both the -S and -W options together, type this command at the command prompt:

./NytroProfiler_64 -D /dev/sdb:/dev/sdga -CFG das -SZ 200:400 -S 20 -W 10 -O trace

To set the profiling to start after 20 minutes, run the preceding command with the -S 20 option and to set the Nytro Profiler to last only for 10 seconds, include the -W 10 option. The trace.qt output file is generated.

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To profile I/Os on multiple devices simultaneously (for example, /dev/sda, /dev/sdb, and /dev/sdc:/dev/sdga):

./NytroProfiler_64 -D /dev/sda:/dev/sdb:/dev/sdga -CFG das -SZ 200:400 -O trace

The Nytro Profiler runs until you press Ctrl+C on the keyboard. The trace.qt output file is generated.

NOTE  Do not use space as the separator between disks names.

NOTE  A file with the .qt extension is added to the output file specified, for example, the -o trace generates a trace.qt file.