Mysql state invalidating celeb dating news

6854933580_2c8b688306_z

For more information on how Inno DB interacts with the query cache, please read pages 213-215 of the book "High Performance My SQL (Second Edition)".If all or the majority of your data is My ISAM, you could go with your original idea of using SQL_NO_CACHE.row *************************** Slave_IO_State: Waiting for master to send event Master_Host: dware-master Master_User: replica Master_Port: 3306 Connect_Retry: 60 Master_Log_File: binlog.001620 Read_Master_Log_Pos: 328943038 Relay_Log_File: relay-bin.000109 Relay_Log_Pos: 444602036 Relay_Master_Log_File: binlog.001607 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 444601893 Relay_Log_Space: 7062540762 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 32298 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 1 row in set (0.00 sec) === -------------------------------- ------- | Variable_name | Value | -------------------------------- ------- | flush | OFF | | flush_time | 0 | | innodb_adaptive_flushing | ON | | innodb_flush_log_at_trx_commit | 2 | | innodb_flush_method | | -------------------------------- ------- 5 rows in set (0.00 sec) =============== ------------------- ------- | Variable_name | Value | ------------------- ------- | log_slave_updates | OFF | ------------------- ------- 1 row in set (0.00 sec) === [[email protected] binlog]# mysqlbinlog -v --base64-output=DECODE-ROWS --start-position=444601893 binlog.001607 | head -30 /*! */; SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*! They're normal, and there's really nothing to see here... although if your real problem on the slave is a disk I/O bottleneck, and if you have sufficient memory and cpu, then you could on selected Inno DB tables after enabling Barracuda and possibly eliminate some bottleneck because on-disk compression should mean less disk I/O, but means more demand on CPU as well as more demand on the Inno DB Buffer Pool, which will try to store both the compressed and uncompressed versions of some pages.40019 SET @@session.max_insert_delayed_threads=0*/; /*! 50003 SET @[email protected]@COMPLETION_TYPE, COMPLETION_TYPE=0*/; DELIMITER /*! */; # at 444601893 #130323 server id 1 end_log_pos 444601987 Query thread_id=216095 exec_time=1 error_code=0 SET TIMESTAMP=1364099743/*! */; SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*! But the first step is to identify what about is making it slow. You should have it available but it should be all free, or almost all free. Is anything else on the system competing for resources? You should contact the help centre via the link at the bottom of the page, to ask for your multiple accounts to be merged.Description: "Show slave status" showing "seconds_behind_master=0", but the server is not replicating (Relay_Log_Pos not increasing and I also tested manually creating a table that did not replicate).

mysql state invalidating-20mysql state invalidating-71mysql state invalidating-78

- Slave IO_Thread is working fine, byt SQL_Thread is not.row *************************** Slave_IO_State: Waiting for master to send event Master_Host: isp-db-mysql-1infra Master_User: slave Master_Port: 3306 Connect_Retry: 60 Master_Log_File: isp-db-mysql-1.052619 Read_Master_Log_Pos: 3138691 Relay_Log_File: isp-db-mysql-1-relay-bin.000002 Relay_Log_Pos: 32861 Relay_Master_Log_File: isp-db-mysql-1.052556 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 8109731 Relay_Log_Space: 6642282995 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: 1 row in set (0.01 sec) mysql show engine innodb status\G *************************** 1.row *************************** Type: Inno DB Name: Status: ===================================== 120214 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 40 seconds ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 1200, signal count 1198 Mutex spin waits 0, rounds 24291, OS waits 1067 RW-shared spins 176, OS waits 88; RW-excl spins 40, OS waits 40 ------------ TRANSACTIONS ------------ Trx id counter 0 327373569 Purge done for trx's n:o select * from emailmkt.email_settings_cron_schedule limit 10; ----------------- ------------ | jobtype | lastrun | ----------------- ------------ | autoresponder | 0 | | bounce | 0 | | send | 1329132962 | | triggeremails_s | 0 | | triggeremails_p | 0 | | maintenance | 1329071946 | | splittest | 0 | | send | 1329132962 | | send | 1329132962 | | send | 1329132962 | ----------------- ------------ 10 rows in set (0.00 sec) I've created indexes on both columns but the problem persists: mysql show create table emailmkt.email_settings_cron_schedule\G *************************** 1.How to repeat: I believe this might have something to do with row based replication of large tables.Rows: ~49,917,839 Inno DB latin1_swedish_ci Size: 28.7 Gi B I've now yet been able to repeat with 100% accuracy.I'm currently working on a My SQL database where we are seeing a large number of invalidations from the query cache, primarily because of the high number of INSERT, DELETE and UPDATE statements that are being executed on many of the tables.What I'm trying to determine is whether or not there is any benefit at all to allowing the query cache to be used for SELECT statements that are being run against these tables.Edit: At the request of the user @Rolando My SQLDBA below, here's the info on My ISAM and INNODB. It would be nice if Inno DB's MVCC would let queries be served from the query cache if modifications do not affect repeatable reads for other transactions. Apparently, you have a lot of queries that get invalidated rather quickly and are probably not being reused.For Inno DB under My SQL 4.0, the query cache was disabled for transactions.For My SQL 4.1 , Inno DB plays traffic cop when allowing access to the query cache on a per-table basis.From the perspective of your question, I would say that the justification of removing the query cache is not so much the overhead, but how Inno DB manages it.

You must have an account to comment. Please register or login here!