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• Ignite and plugins versions, topology changes, profiling start/end time
• Queries (SQL, scan, ..) timings, resources:
  • Queries that took up the most time
  • Slowest queries
  • Most frequent queries
  • Failing queries
  • Queries count by type
  • Queries that took up the most CPU/IO/Disk
• User tasks timings, resources
  • Jobs of slowest tasks
• Caches and cache operations statistics (similar to queries):
  • Get/Put/Remove
  • Transactions
  • Invoke
  • Lock
  • create/destroy caches
• Workload by nodes
  • CPU/IO/Disk resources
• Checkpoints statistics
• WAL statistics
• PME statistics

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The Ignite will log some additional internal statistics using separate log category of IgniteLoggerperformance statistics to profiling files. The format is like WAL logging.

One disk-writer thread and off-heap memory buffer will be used to minimize affect on performance. Maximum file size and buffer size can be configured on start.

The new ignite-profiling module extension performance-statistics-ext module will be introduced. It will contain :

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the tool to build the report: build-report.sh(bat). The JSON format is used to store aggregated statistics and next draw in the report.

The report is based on the bootstrap library and can be viewed in a browser offline.

Management

1) JMX: 

PerformanceStatisticsMBean

• void start() // Start collecting performance statistics in the cluster.
• void stop() // Stop collecting performance statistics in the cluster.
• boolean enabled()

Public API changes

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• // True if collecting performance statistics enabled.

2) Control.sh utility. Functionality is like JMX.

3) System properties:

• IGNITE_PERF_STAT_FILE_MAX_SIZE - Performance statistics maximum file size in bytes. Performance statistics will be stopped when the size exceeded.
• IGNITE_PERF_STAT_BUFFER_SIZE - Performance statistics offheap buffer size in bytes.
• IGNITE_PERF_STAT_FLUSH_SIZE - Performance statistics minimal batch size to flush in bytes.
• IGNITE_PERF_STAT_CACHED_STRINGS_THRESHOLD - Performance statistics maximum cached strings threshold. String caching will stop on threshold excess.

Risks and Assumptions

Enabled profiling mode will cause performance degradation.

Discussion Links

// Links to discussions on the devlist, if applicableDev-list discussion.

Report example

Image AddedImage Added

Reference Links

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