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MSSQL performance metricset
editMSSQL performance metricset
editperformance
Metricset fetches information from what’s commonly known as Performance Counters in MSSQL.
We fetch the following data:
- page_splits_per_sec: Number of page splits per second that occur as the result of overflowing index pages.
- lock_waits_per_sec: Number of lock requests per second that required the caller to wait.
- user_connections: Total number of user connections
- transactions: Total number of transactions
- active_temp_tables: Number of temporary tables/table variables in use.
- connections_reset_per_sec: Total number of logins started from the connection pool.
- logins_per_sec: Total number of logins started per second. This does not include pooled connections.
- logouts_per_sec: Total number of logout operations started per second.
- recompilations_per_sec: Number of statement recompiles per second. Counts the number of times statement recompiles are triggered. Generally, you want the recompiles to be low.
- compilations_per_sec: Number of SQL compilations per second. Indicates the number of times the compile code path is entered. Includes compiles caused by statement-level recompilations in SQL Server. After SQL Server user activity is stable, this value reaches a steady state.
- batch_requests_per_sec: Number of Transact-SQL command batches received per second. This statistic is affected by all constraints (such as I/O, number of users, cache size, complexity of requests, and so on). High batch requests mean good throughput.
- cache_hit.pct: The ratio is the total number of cache hits divided by the total number of cache lookups over the last few thousand page accesses. After a long period of time, the ratio moves very little. Because reading from the cache is much less expensive than reading from disk, you want this ratio to be high
- page_life_expectancy.sec: Indicates the number of seconds a page will stay in the buffer pool without references (in seconds).
- buffer.checkpoint_pages_per_sec: Indicates the number of pages flushed to disk per second by a checkpoint or other operation that require all dirty pages to be flushed.
- buffer.database_pages: Indicates the number of pages in the buffer pool with database content.
- buffer.target_pages: Ideal number of pages in the buffer pool.
This is a default metricset. If the host module is unconfigured, this metricset is enabled by default.
Fields
editFor a description of each field in the metricset, see the exported fields section.
Here is an example document generated by this metricset:
{ "@timestamp": "2017-10-12T08:05:34.853Z", "event": { "dataset": "mssql.performance", "duration": 115000, "module": "mssql" }, "metricset": { "name": "performance", "period": 10000 }, "mssql": { "performance": { "active_temp_tables": 0, "batch_requests_per_sec": 3355, "buffer": { "cache_hit": { "pct": 0.22 }, "checkpoint_pages_per_sec": 295, "database_pages": 2152, "page_life_expectancy": { "sec": 1400 }, "target_pages": 3178496 }, "compilations_per_sec": 1151, "connections_reset_per_sec": 88, "lock_waits_per_sec": 6, "logins_per_sec": 1105, "logouts_per_sec": 1103, "page_splits_per_sec": 14, "recompilations_per_sec": 2, "transactions": 0, "user_connections": 2 } }, "service": { "address": "172.23.0.2:1433", "type": "mssql" } }