feat(inputs.memcached): Add support for external-store metrics (#15910)
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Paulo Dias
GitHub
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6b68a68eff
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@ -69,6 +69,27 @@ Fields:
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new items
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new items
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* expired_unfetched - Items pulled from LRU that were never touched by
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* expired_unfetched - Items pulled from LRU that were never touched by
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get/incr/append/etc before expiring
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get/incr/append/etc before expiring
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* extstore_compact_lost - The number of objects lost during the compaction process. This happens when objects couldn't be rescued or moved to other pages before they were overwritten or evicted.
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* extstore_compact_rescues - The total number of objects successfully rescued during the compaction process, meaning they were moved to another page instead of being discarded.
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* extstore_compact_resc_cold - The number of cold objects (rarely accessed) rescued during the compaction process.
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* extstore_compact_resc_old - The number of older objects (likely less frequently accessed) rescued during the compaction process.
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* extstore_compact_skipped - The number of compaction operations skipped, often due to the page not requiring compaction or other conditions preventing it.
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* extstore_page_allocs - The total number of pages allocated in the external storage system.
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* extstore_page_evictions - The total number of pages evicted (removed) from external storage, generally to free up space.
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* extstore_page_reclaims - The total number of previously evicted pages that were reclaimed and reused.
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* extstore_pages_free - The number of pages currently free (unallocated) in the external storage.
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* extstore_pages_used - The number of pages currently in use in the external storage system.
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* extstore_objects_evicted - The total number of objects evicted from external storage, typically to free up space.
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* extstore_objects_read - The total number of objects read from external storage.
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* extstore_objects_written - The total number of objects written to external storage.
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* extstore_objects_used - The number of active objects currently in use in the external storage.
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* extstore_bytes_evicted - The total number of bytes evicted from external storage.
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* extstore_bytes_written - The total number of bytes written to external storage.
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* extstore_bytes_read - The total number of bytes read from external storage.
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* extstore_bytes_used - The total number of bytes currently in use in external storage.
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* extstore_bytes_fragmented - The total number of fragmented bytes in external storage, representing space that is allocated but not fully utilized.
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* extstore_limit_maxbytes - The maximum limit of bytes that external storage can use.
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* extstore_io_queue - The current length of the I/O queue, representing pending input/output operations for external storage.
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* get_expired - Number of items that have been requested but had already
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* get_expired - Number of items that have been requested but had already
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expired
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expired
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* get_flushed - Number of items that have been requested but have been flushed
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* get_flushed - Number of items that have been requested but have been flushed
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@ -59,6 +59,27 @@ var sendMetrics = []string{
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"evicted_unfetched",
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"evicted_unfetched",
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"evictions",
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"evictions",
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"expired_unfetched",
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"expired_unfetched",
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"extstore_compact_lost",
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"extstore_compact_rescues",
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"extstore_compact_resc_cold",
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"extstore_compact_resc_old",
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"extstore_compact_skipped",
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"extstore_page_allocs",
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"extstore_page_evictions",
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"extstore_page_reclaims",
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"extstore_pages_free",
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"extstore_pages_used",
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"extstore_objects_evicted",
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"extstore_objects_read",
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"extstore_objects_written",
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"extstore_objects_used",
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"extstore_bytes_evicted",
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"extstore_bytes_written",
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"extstore_bytes_read",
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"extstore_bytes_used",
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"extstore_bytes_fragmented",
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"extstore_limit_maxbytes",
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"extstore_io_queue",
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"get_expired",
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"get_expired",
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"get_flushed",
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"get_flushed",
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"get_hits",
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"get_hits",
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@ -131,6 +131,27 @@ func TestMemcachedParseMetrics(t *testing.T) {
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{"log_watcher_skipped", "0"},
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{"log_watcher_skipped", "0"},
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{"log_watcher_sent", "0"},
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{"log_watcher_sent", "0"},
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{"log_watchers", "0"},
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{"log_watchers", "0"},
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{"extstore_compact_lost", "3287"},
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{"extstore_compact_rescues", "47014"},
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{"extstore_compact_resc_cold", "0"},
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{"extstore_compact_resc_old", "0"},
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{"extstore_compact_skipped", "0"},
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{"extstore_page_allocs", "30047"},
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{"extstore_page_evictions", "25315"},
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{"extstore_page_reclaims", "29247"},
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{"extstore_pages_free", "0"},
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{"extstore_pages_used", "800"},
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{"extstore_objects_evicted", "1243091"},
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{"extstore_objects_read", "938410"},
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{"extstore_objects_written", "1487003"},
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{"extstore_objects_used", "39319"},
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{"extstore_bytes_evicted", "1638804587744"},
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{"extstore_bytes_written", "1951205770118"},
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{"extstore_bytes_read", "1249921752566"},
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{"extstore_bytes_used", "51316205305"},
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{"extstore_bytes_fragmented", "2370885895"},
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{"extstore_limit_maxbytes", "53687091200"},
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{"extstore_io_queue", "0"},
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{"unexpected_napi_ids", "0"},
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{"unexpected_napi_ids", "0"},
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{"round_robin_fallback", "0"},
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{"round_robin_fallback", "0"},
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{"bytes", "0"},
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{"bytes", "0"},
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@ -238,6 +259,27 @@ STAT log_worker_written 0
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STAT log_watcher_skipped 0
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STAT log_watcher_skipped 0
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STAT log_watcher_sent 0
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STAT log_watcher_sent 0
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STAT log_watchers 0
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STAT log_watchers 0
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STAT extstore_compact_lost 3287
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STAT extstore_compact_rescues 47014
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STAT extstore_compact_resc_cold 0
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STAT extstore_compact_resc_old 0
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STAT extstore_compact_skipped 0
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STAT extstore_page_allocs 30047
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STAT extstore_page_evictions 25315
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STAT extstore_page_reclaims 29247
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STAT extstore_pages_free 0
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STAT extstore_pages_used 800
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STAT extstore_objects_evicted 1243091
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STAT extstore_objects_read 938410
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STAT extstore_objects_written 1487003
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STAT extstore_objects_used 39319
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STAT extstore_bytes_evicted 1638804587744
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STAT extstore_bytes_written 1951205770118
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STAT extstore_bytes_read 1249921752566
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STAT extstore_bytes_used 51316205305
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STAT extstore_bytes_fragmented 2370885895
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STAT extstore_limit_maxbytes 53687091200
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STAT extstore_io_queue 0
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STAT unexpected_napi_ids 0
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STAT unexpected_napi_ids 0
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STAT round_robin_fallback 0
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STAT round_robin_fallback 0
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STAT bytes 0
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STAT bytes 0
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