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MySQL 5.6 Reference Manual  /  INFORMATION_SCHEMA Tables  /  The INFORMATION_SCHEMA PROFILING Table

21.16 The INFORMATION_SCHEMA PROFILING Table

The PROFILING table provides statement profiling information. Its contents correspond to the information produced by the SHOW PROFILES and SHOW PROFILE statements (see Section 13.7.5.32, “SHOW PROFILES Syntax”). The table is empty unless the profiling session variable is set to 1.

INFORMATION_SCHEMA NameSHOW NameRemarks
QUERY_IDQuery_ID 
SEQ 
STATEStatus 
DURATIONDuration 
CPU_USERCPU_user 
CPU_SYSTEMCPU_system 
CONTEXT_VOLUNTARYContext_voluntary 
CONTEXT_INVOLUNTARYContext_involuntary 
BLOCK_OPS_INBlock_ops_in 
BLOCK_OPS_OUTBlock_ops_out 
MESSAGES_SENTMessages_sent 
MESSAGES_RECEIVEDMessages_received 
PAGE_FAULTS_MAJORPage_faults_major 
PAGE_FAULTS_MINORPage_faults_minor 
SWAPSSwaps 
SOURCE_FUNCTIONSource_function 
SOURCE_FILESource_file 
SOURCE_LINESource_line 

Notes:

  • QUERY_ID is a numeric statement identifier.

  • SEQ is a sequence number indicating the display order for rows with the same QUERY_ID value.

  • STATE is the profiling state to which the row measurements apply.

  • DURATION indicates how long statement execution remained in the given state, in seconds.

  • CPU_USER and CPU_SYSTEM indicate user and system CPU use, in seconds.

  • CONTEXT_VOLUNTARY and CONTEXT_INVOLUNTARY indicate how many voluntary and involuntary context switches occurred.

  • BLOCK_OPS_IN and BLOCK_OPS_OUT indicate the number of block input and output operations.

  • MESSAGES_SENT and MESSAGES_RECEIVED indicate the number of communication messages sent and received.

  • PAGE_FAULTS_MAJOR and PAGE_FAULTS_MINOR indicate the number of major and minor page faults.

  • SWAPS indicates how many swaps occurred.

  • SOURCE_FUNCTION, SOURCE_FILE, and SOURCE_LINE provide information indicating where in the source code the profiled state executes.


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