Description
I attempted to enable statistics logging in wtperf today, but could not get it to work via command line options.
I tried:
wtperf $ ./wtperf -M -o "conn_config=statistics_log=(wait=60)"
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Error parsing 'conn_config=statistics_log=(wait=60)' at byte 26: Value already complete: Invalid argument
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wtperf $ ./wtperf -M -C "statistics_log=(wait=60)"
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connection.reconfigure: unknown configuration key: 'statistics_log': Invalid argument
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Error configuring using create,cache_size=1GB,statistics_log=(wait=60) Error: Invalid argument
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There seem to be two separate issues.
AFAIK: It's not possible to reconfigure statistics logging on, since if a connection is opened without statistics logging, we don't collect the statistics. Maybe we need to revisit that?