Resolution:
Environment:
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Pre – RV8.1.2 RVCM

Cause:
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In pre-RV 8.1.2, the  RVCM process using synchronous ledger files may experience performance issues every 5 minutes when the compaction of ledger files occurs. RV 8.1.2 implemented the following enhancement to improve RVCM performance regarding compaction.


Resolution:
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1. RV8.1.2 removed the compaction part of the compact/truncate that happens every 5 minutes.  Compaction still occurs at start up before the application can send its first message.  It will not occur during operations.

2. RV8.1.2 randomized the time at which the truncation event occurs.  If several RVCM applications are running on the same host with the same file system, it is best to try to keep all the senders from truncating at the same time, thereby reducing disk contention.

3. The change impacts only librvcm and librv libraries.

Keywords/Tags:
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RVCM ledger