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docs/using/advisors/index.md

@@ -1 +1,17 @@
-# Advisors
+# Advisors
+
+## InnoDB Flush Method May Not Be Optimal
+
+### Problem Description
+
+By default, InnoDB's log buffer is written out to the log file at each transaction commit and a flush-to-disk operation is performed on the log file, which enforces ACID compliance. In the event of a crash, if you can afford to lose a second's worth of transactions, you can achieve better performance by setting `__innodb_flush_log_at_trx_commit__` to either 0 or 2. If you set the value to 2, then only an operating system crash or a power outage can erase the last second of transactions. This can be very useful on slave servers, where the loss of a second's worth of data can be recovered from the master server if needed.
+
+### Links and Further Reading
+
+[Variables](http://dev.mysql.com/doc/mysql/en/innodb-parameters.html#optvar_innodb_flush_log_at_trx_commit) MySQL Manual: [InnoDB Performance Tuning Tips](http://dev.mysql.com/doc/mysql/en/optimizing-innodb.html)
+
+### Expression
+
+```
+(%innodb_flush_log_at_trx_commit% == THRESHOLD)
+```

mkdocs-pdf.yml

@@ -104,7 +104,8 @@ nav:
       - using/query-analytics.md
       - using/dbaas.md
       - using/security-threat-tool.md
-#      - using/advisors/innodb_log_buffer_flushed_to_disk_after_each_trx.md
+#      - Advisors:
+#          - using/advisors/index.md
   - How to:
       - how-to/index.md
       - how-to/configure.md

mkdocs-percona.yml

@@ -107,7 +107,8 @@ nav:
       - using/query-analytics.md
       - using/dbaas.md
       - using/security-threat-tool.md
-#      - using/advisors/innodb_log_buffer_flushed_to_disk_after_each_trx.md
+#      - Advisors:
+#          - using/advisors/index.md
   - How to:
       - how-to/index.md
       - how-to/configure.md

mkdocs.yml

@@ -116,7 +116,8 @@ nav:
       - using/query-analytics.md
       - using/dbaas.md
       - using/security-threat-tool.md
-#      - using/advisors/innodb_log_buffer_flushed_to_disk_after_each_trx.md
+#      - Advisors:
+#          - using/advisors/index.md
   - How to:
       - how-to/index.md
       - how-to/configure.md

temp-mkdocs-base.yml

@@ -133,7 +133,8 @@ nav:
       - using/query-analytics.md
       - using/dbaas.md
       - using/security-threat-tool.md
-#      - using/advisors/innodb_log_buffer_flushed_to_disk_after_each_trx.md
+#      - Advisors:
+#      - using/advisors/index.md
   - How to:
       - how-to/index.md
       - how-to/configure.md