pg_stat_wal.wal_sync \u7edf\u8ba1\u5b57\u6bb5\u3002
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\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587\u3002
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fdatasync\u3001fsync \u6216 fsync_writethrough\uff0c\u5426\u5219\u4e3a\u96f6\uff09\u3002\u6709\u5173\u5185\u90e8 WAL \u51fd\u6570 issue_xlog_fsync \u7684\u66f4\u591a\u4fe1\u606f\uff0c\u53c2\u89c1\u7b2c 30.5 \u8282\u3002", "description_zh_html": "pg_stat_wal.wal_sync \u7edf\u8ba1\u5b57\u6bb5\u3002
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", "body_sha256": "49d36b8ad071e3ba8b59096465eaf1b0e74844d52f3de911aa4b062814594a3d", "content_hash": "a0c59b6a5b0798690868b26778c67f56040ff3fa20859c414a920306897a4ac1", "source_database": "center", "source_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "signature": "SELECT wal_sync FROM pg_catalog.pg_stat_wal;", "tables_zh": [], "documented": true, "description": ["\u901a\u8fc7 issue_xlog_fsync \u8bf7\u6c42\u5c06 WAL \u6587\u4ef6\u540c\u6b65\u5230\u78c1\u76d8\u7684\u6b21\u6570\uff08\u5982\u679c fsync \u662f on \u4e14 wal_sync_method \u662f fdatasync\u3001fsync \u6216 fsync_writethrough\uff0c\u5426\u5219\u4e3a\u96f6\uff09\u3002\u6709\u5173\u5185\u90e8 WAL \u51fd\u6570 issue_xlog_fsync \u7684\u66f4\u591a\u4fe1\u606f\uff0c\u53c2\u89c1\u7b2c 28.5 \u8282\u3002"], "manual_html": "", "manual_path": "/docs/17/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_wal \u89c6\u56fe\u4e00\u76f4\u6709\u4e00\u884c\uff0c\u5305\u542b\u5173\u4e8e\u96c6\u7c07\u7684WAL\u6d3b\u52a8\u7684\u6570\u636e\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT wal_sync FROM pg_catalog.pg_stat_wal;", "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/17/monitoring-stats.html", "method": "same-major semantic node", "sha256": "5cd346cc373a5a006b07664d9969d4c630c8ea55dea33b8f3211f061ce43e54f", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[20]/p[2]"]}], "language": "zh", "original_text": {"/summary": "Number of times WAL files were synced to disk via issue_xlog_fsync request (if fsync is on and wal_sync_method is either fdatasync, fsync or fsync_writethrough, otherwise zero). See Section 28.5 for more information about the internal WAL function issue_xlog_fsync.", "/versions/17/description/0": "Number of times WAL files were synced to disk via issue_xlog_fsync request (if fsync is on and wal_sync_method is either fdatasync, fsync or fsync_writethrough, otherwise zero). See Section 28.5 for more information about the internal WAL function issue_xlog_fsync.", "/versions/17/facts/0/label": "View", "/versions/17/facts/1/label": "Field", "/versions/17/facts/2/label": "SQL type", "/versions/17/facts/3/label": "Units named in the field definition", "/versions/17/facts/3/value": "Not specified", "/versions/17/facts/4/label": "Reset observation", "/versions/17/facts/4/value": "Time at which these statistics were last reset", "/versions/17/related/0/label": "pg_stat_wal columns", "/versions/17/related/1/label": "Statistics collection and reset functions", "/versions/17/sections/0/title": "View semantics", "/versions/17/sections/1/title": "Collection and reset context", "/versions/17/sections/2/title": "Inspect this field", "/versions/17/sections/0/paragraphs/0": "The pg_stat_wal view will always have a single row, containing data about WAL activity of the cluster.", "/versions/17/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/17/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "ec4855bc1c62d0439627418975df8ca5cd2d19f67ecca5fe2dc71e043ddf48fb", "canonical_center_text_hash": "a0c59b6a5b0798690868b26778c67f56040ff3fa20859c414a920306897a4ac1"}, "description_zh": "\u901a\u8fc7 issue_xlog_fsync \u8bf7\u6c42\u5c06 WAL \u6587\u4ef6\u540c\u6b65\u5230\u78c1\u76d8\u7684\u6b21\u6570\uff08\u5982\u679c fsync \u662f on \u4e14 wal_sync_method \u662f fdatasync\u3001fsync \u6216 fsync_writethrough\uff0c\u5426\u5219\u4e3a\u96f6\uff09\u3002\u6709\u5173\u5185\u90e8 WAL \u51fd\u6570 issue_xlog_fsync \u7684\u66f4\u591a\u4fe1\u606f\uff0c\u53c2\u89c1\u7b2c 28.5 \u8282\u3002", "comparison_data": {"view": "pg_stat_wal", "field": "wal_sync", "sql_type": "bigint", "units_mentioned": []}, "comparison_hash": "dce25667b3ebde0d5939be945cf2c4e3b7a9875010cc4109d3cbc77ab990a5a5", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "pg_stat_wal.wal_sync \u7edf\u8ba1\u5b57\u6bb5\u3002
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