redone

docs/en/operations/server-configuration-parameters/settings.md

@@ -758,9 +758,7 @@ If the table doesn’t exist, ClickHouse will create it. If the structure of the
 </query_thread_log>
 ```
 
-## system.metric_log {#system_tables-metric_log}
-
-Contains history of metrics values from tables [`system.metrics`](../../operations/system-tables/metrics.md) and [`system.events`](../../operations/system-tables/events.md#system_tables-events), periodically flushed to disk.
+## metric_log {#metric_log}
 
 To turn on metrics history collection on `system.metric_log`, create `/etc/clickhouse-server/config.d/metric_log.xml` with following content:
 
@@ -775,44 +773,6 @@ To turn on metrics history collection on `system.metric_log`, create `/etc/click
 </yandex>
 ```
 
-Columns:
--   `event_date` ([Date](../../sql-reference/data-types/date.md)) — Event date.
--   `event_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — Event time.
--   `event_time_microseconds` ([DateTime64](../../sql-reference/data-types/datetime64.md)) — Event time with microseconds resolution.
-
-**Example**
-
-``` sql
-SELECT * FROM system.metric_log LIMIT 1 FORMAT Vertical;
-```
-
-``` text
-Row 1:
-──────
-event_date:                                                      2020-09-05
-event_time:                                                      2020-09-05 16:22:33
-event_time_microseconds:                                         2020-09-05 16:22:33.196807
-milliseconds:                                                    196
-ProfileEvent_Query:                                              0
-ProfileEvent_SelectQuery:                                        0
-ProfileEvent_InsertQuery:                                        0
-ProfileEvent_FailedQuery:                                        0
-ProfileEvent_FailedSelectQuery:                                  0
-...
-...
-CurrentMetric_Revision:                                          54439
-CurrentMetric_VersionInteger:                                    20009001
-CurrentMetric_RWLockWaitingReaders:                              0
-CurrentMetric_RWLockWaitingWriters:                              0
-CurrentMetric_RWLockActiveReaders:                               0
-CurrentMetric_RWLockActiveWriters:                               0
-CurrentMetric_GlobalThread:                                      74
-CurrentMetric_GlobalThreadActive:                                26
-CurrentMetric_LocalThread:                                       0
-CurrentMetric_LocalThreadActive:                                 0
-CurrentMetric_DistributedFilesToInsert:                          0
-```
-
 **See also**
 
 -   [system.asynchronous_metrics](../../operations/system-tables/asynchronous_metrics.md) — Contains periodically calculated metrics.

docs/en/operations/system-tables/metric_log.md

@@ -2,19 +2,6 @@
 
 Contains history of metrics values from tables `system.metrics` and `system.events`, periodically flushed to disk.
 
-To turn on metrics history collection on `system.metric_log`, create `/etc/clickhouse-server/config.d/metric_log.xml` with following content:
-
-``` xml
-<yandex>
-    <metric_log>
-        <database>system</database>
-        <table>metric_log</table>
-        <flush_interval_milliseconds>7500</flush_interval_milliseconds>
-        <collect_interval_milliseconds>1000</collect_interval_milliseconds>
-    </metric_log>
-</yandex>
-```
-
 Columns:
 -   `event_date` ([Date](../../sql-reference/data-types/date.md)) — Event date.
 -   `event_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — Event time.
@@ -55,6 +42,7 @@ CurrentMetric_DistributedFilesToInsert:                          0
 
 **See also**
 
+-   [metric_log setting](../../operations/server-configuration-parameters/settings.md#metric_log) — What you should add.
 -   [system.asynchronous_metrics](../../operations/system-tables/asynchronous_metrics.md) — Contains periodically calculated metrics.
 -   [system.events](../../operations/system-tables/events.md#system_tables-events) — Contains a number of events that occurred.
 -   [system.metrics](../../operations/system-tables/metrics.md) — Contains instantly calculated metrics.