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authorSergey Poznyakoff <gray@gnu.org.ua>2016-06-09 07:04:55 (GMT)
committer Sergey Poznyakoff <gray@gnu.org.ua>2016-06-09 07:04:55 (GMT)
commit4edb28548c028f788a5c08b0dda415ce4f6a01aa (patch) (side-by-side diff)
tree60b44f00c5b2f6d7cb18cb700e43197b098edf0d /src/mysqlstat.8
parentb1173f33f7d9e1c42371a5df7e21765861c74c4f (diff)
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Implement master status MIB
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diff --git a/src/mysqlstat.8 b/src/mysqlstat.8
index f79e9cf..e0bcb7f 100644
--- a/src/mysqlstat.8
+++ b/src/mysqlstat.8
@@ -48,6 +48,18 @@ privileges.
To configure the module, it is recommended to use the
.BR mysqlstat\-setup (1)
utility.
+.SS Caching
+In order to minimize its impact on MySQL server, the
+.B mysqlstat
+module caches the data obtained from the server. Default caching
+interval is 10 seconds for tabular information. Additionally, results
+of each
+.B SHOW PROCESSLIST
+are cached for 10 seconds. This means that updates of
+.B processListTable
+entries may delay for up to 20 seconds.
+.PP
+As of version 1.0, these delays are not configurable.
.SH CONFIGURATION
MySQL credentials are read from file
.BR /etc/snmp/mysqlstat.cnf .

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