Click here to monitor SSC
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


OS cache in Sql Server


OS cache in Sql Server

Author
Message
Bhuvnesh
Bhuvnesh
SSCrazy
SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)

Group: General Forum Members
Points: 2930 Visits: 4076
Does Sql server use OS cache (outside buffer cache) for its operations ?

-------Bhuvnesh----------
I work only to learn Sql Server...though my company pays me for getting their stuff done;-)
GilaMonster
GilaMonster
SSC-Forever
SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)

Group: General Forum Members
Points: 47412 Visits: 44399
What exactly do you mean by 'OS cache'?

SQL uses memory outside of the buffer pool, but it's no the OS's memory, it's SQL's memory.


Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass


MikaS
MikaS
SSC Rookie
SSC Rookie (39 reputation)SSC Rookie (39 reputation)SSC Rookie (39 reputation)SSC Rookie (39 reputation)SSC Rookie (39 reputation)SSC Rookie (39 reputation)SSC Rookie (39 reputation)SSC Rookie (39 reputation)

Group: General Forum Members
Points: 39 Visits: 697
Hi,

OS System Cache is a subset of a Standby List. Standby List is used for pages that have not been touched for awhile and Windows performed memory trimming on them. Also when the process (like sqlservr.exe) is terminated the pages for the exe and the dll's have their pointers updated to point to the Standby List, so that they can be re-assembled from the cache.

Standby List is one of the four lists used by the OS to organize physical memory. They're used by the OS, services, applications etc, so in that regard it can be said that they're also used by the SQL Server Smile

Mika Sutinen, Senior DBA
@SQLFinn on Twitter
Blogging at SQLStarters
Bhuvnesh
Bhuvnesh
SSCrazy
SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)

Group: General Forum Members
Points: 2930 Visits: 4076
MikaS (7/30/2014)
Hi,

OS System Cache is a subset of a Standby List. Standby List is used for pages that have not been touched for awhile and Windows performed memory trimming on them. Also when the process (like sqlservr.exe) is terminated the pages for the exe and the dll's have their pointers updated to point to the Standby List, so that they can be re-assembled from the cache.

Standby List is one of the four lists used by the OS to organize physical memory. They're used by the OS, services, applications etc, so in that regard it can be said that they're also used by the SQL Server Smile
thanks any areticle link ..actually i didnt find any.

-------Bhuvnesh----------
I work only to learn Sql Server...though my company pays me for getting their stuff done;-)
GilaMonster
GilaMonster
SSC-Forever
SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)SSC-Forever (47K reputation)

Group: General Forum Members
Points: 47412 Visits: 44399
Google for mark russinovich windows memory and you'll find a tonne of stuff. That's OS-level memory management though, not SQL's memory management.


Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass


Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum

































































































































































SQLServerCentral


Search