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checkpoint frequency

is there a way to know as to how frequently a chkpt is being issued i.e., is there a system table where this information is logged. i believe it is not a fixed interval and is determined by sql sqlserve based on the system activity and the recovery interval configuration, which specifies themaximum acceptable recovery time.

jbiswas

The automatic checkpoint interval is calculated by SQL Server on the basis of system activity and the recovery interval value in the "syscurconfigs" system table. The "recovery interval" determines checkpoint frequency by specifying the amount of time it should take the system to recover. Reset this value by executing the sp_configure system stored procedure and the RECONFIGURE statement.

sajalk

ASKER

the answer does not answer my question. you have essentially said what i said in the question.
since chkpt frequency is determined by the system activity and recovery interval settings, i would not expect chkpt to occur at regular fixed interval.
my question was as to where i can look up to as to which times a chkpt was issued.

TMS

You are right, this is not fixed, the 'recovery interval configuration option' is just a MAXIMUM number, so the interval is up to that figure. I'm pretty sure the real number is kept hidden in an internal variable of SQL server. It is not stored anywhere, and I guess it's not available to the 'outside' world.

You'd have to ask to an SQL server designer to know the answer (which I'm sure is NO)...
May I ask why you want to know that ?

sajalk

ASKER

my curiousity was essentially academic.
thanx.
sajal.

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bret

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sajalk

ASKER

bretts's knowledge is impressive.
thanx.
sajal.