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observation", "/versions/18/facts/4/value": "Time at which these statistics were last reset", "/versions/18/related/0/label": "pg_stat_recovery_prefetch columns", "/versions/18/related/1/label": "Statistics collection and reset functions", "/versions/18/sections/0/title": "View semantics", "/versions/18/sections/1/title": "Collection and reset context", "/versions/18/sections/2/title": "Inspect this field", "/versions/18/sections/0/paragraphs/0": "The pg_stat_recovery_prefetch view will contain only one row. The columns wal_distance, block_distance and io_depth show current values, and the other columns show cumulative counters that can be reset with the pg_stat_reset_shared function.", "/versions/18/sections/1/paragraphs/0": "The pg_stat_recovery_prefetch view will contain only one row. The columns wal_distance , block_distance and io_depth show current values, and the other columns show cumulative counters that can be reset with the pg_stat_reset_shared function.", "/versions/18/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "91baffb275acc6669576138dcca3204ce94cee32dafac7bb9b4c7eebb2bbc4c4", "canonical_center_text_hash": "32fc6d082b7dcf9b1455573b4e6794311b1e4688eb19ae5adec5d819b48f1451"}, "description_zh": "\u5df2\u542f\u52a8\u4f46\u5c1a\u672a\u786e\u8ba4\u5b8c\u6210\u7684\u9884\u53d6\u6570\u91cf", "comparison_data": {"view": "pg_stat_recovery_prefetch", "field": "io_depth", "sql_type": "int", "units_mentioned": []}, "comparison_hash": "88500a16fbd09887ff661140d88df22ddddbfb56bdf88ee7f7449cc2c0bb0ad7", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_recovery_prefetch.io_depth 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href=\"/zh/docs/18/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5df2\u542f\u52a8\u4f46\u5c1a\u672a\u786e\u8ba4\u5b8c\u6210\u7684\u9884\u53d6\u6570\u91cf", "version": "18", "link_map": {"/zh/docs/18/monitoring-stats.html": "/docs/18/monitoring-stats.html"}, "body_html": "<p>pg_stat_recovery_prefetch.io_depth \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_recovery_prefetch</code></dd><dt>\u5b57\u6bb5</dt><dd><code>io_depth</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>int</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5df2\u542f\u52a8\u4f46\u5c1a\u672a\u786e\u8ba4\u5b8c\u6210\u7684\u9884\u53d6\u6570\u91cf</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": 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["pg_stat_recovery_prefetch \u89c6\u56fe\u5c06\u53ea\u5305\u542b\u4e00\u884c\u3002 wal_distance \u3001 block_distance \u548c io_depth \u5217\u663e\u793a\u5f53\u524d\u503c\uff0c\u5176\u4ed6\u5217\u663e\u793a\u53ef\u4ee5\u4f7f\u7528 pg_stat_reset_shared \u51fd\u6570\u91cd\u7f6e\u7684\u7d2f\u79ef\u8ba1\u6570\u5668\u3002"]}, {"code": "SELECT io_depth FROM pg_catalog.pg_stat_recovery_prefetch;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/18/monitoring-stats.html", "method": "same-major semantic node", "sha256": "ff0b10c5fb4b75c247e38b7ad0e8a50fa0b6ebaa25e68c8c67a1ca972bda40b1", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[11]/div[3]/div[1]/table[0]/tbody[2]/tr[9]/td[0]/p[1]", "#MONITORING-STATS/div[11]/p[2]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "How many prefetches have been initiated but are not yet known to have completed", "/versions/18/facts/0/label": "View", "/versions/18/facts/1/label": "Field", "/versions/18/facts/2/label": "SQL type", "/versions/18/facts/3/label": "Units named in the field definition", "/versions/18/facts/3/value": "Not specified", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "Time at which these statistics were last reset", "/versions/18/related/0/label": "pg_stat_recovery_prefetch columns", "/versions/18/related/1/label": "Statistics collection and reset functions", "/versions/18/sections/0/title": "View semantics", "/versions/18/sections/1/title": "Collection and reset context", "/versions/18/sections/2/title": "Inspect this field", "/versions/18/sections/0/paragraphs/0": "The pg_stat_recovery_prefetch view will contain only one row. The columns wal_distance, block_distance and io_depth show current values, and the other columns show cumulative counters that can be reset with the pg_stat_reset_shared function.", "/versions/18/sections/1/paragraphs/0": "The pg_stat_recovery_prefetch view will contain only one row. The columns wal_distance , block_distance and io_depth show current values, and the other columns show cumulative counters that can be reset with the pg_stat_reset_shared function.", "/versions/18/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "91baffb275acc6669576138dcca3204ce94cee32dafac7bb9b4c7eebb2bbc4c4", "canonical_center_text_hash": "32fc6d082b7dcf9b1455573b4e6794311b1e4688eb19ae5adec5d819b48f1451"}, "description_zh": "\u5df2\u542f\u52a8\u4f46\u5c1a\u672a\u786e\u8ba4\u5b8c\u6210\u7684\u9884\u53d6\u6570\u91cf", "comparison_data": {"view": "pg_stat_recovery_prefetch", "field": "io_depth", "sql_type": "int", "units_mentioned": []}, "comparison_hash": "88500a16fbd09887ff661140d88df22ddddbfb56bdf88ee7f7449cc2c0bb0ad7", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_recovery_prefetch.io_depth \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_recovery_prefetch</code></dd><dt>\u5b57\u6bb5</dt><dd><code>io_depth</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>int</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5df2\u542f\u52a8\u4f46\u5c1a\u672a\u786e\u8ba4\u5b8c\u6210\u7684\u9884\u53d6\u6570\u91cf</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "center_zh_rendered": "<p>pg_stat_recovery_prefetch.io_depth \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_recovery_prefetch</code></dd><dt>\u5b57\u6bb5</dt><dd><code>io_depth</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>int</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5df2\u542f\u52a8\u4f46\u5c1a\u672a\u786e\u8ba4\u5b8c\u6210\u7684\u9884\u53d6\u6570\u91cf</p><p><a href=\"/docs/18/monitoring-stats.html\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "comparison": {"left": "17", "right": "18", "status": "unchanged", "diff": ""}}