I have a customer using SQL Server 2000 Enterprise Edition on two clustered
servers (Windows 2003 SP1) with the following spec (times two):
4 x Intel Xeon Processors @. 2.7GHz
3.5GB RAM
36GB Local Hard Drives
175GB of SAN space for Data and log files
The database is around 2.5 GB.
I have a Cache Hit Ratio that is static at 70. I've never seen a Cache Hit
Ratio this low on any other customers let alone one that doesn't change.
It doesn't fluctuate at all. It has a minimum of 70, an average of 70, and
a maximum of 70 over a 24 hour period with more than 240 user connections.
This seems strange to me. Is there a setting that caps the cache hit ratio?
I would expect it to be > 90.
Any comments or suggestions would be great.Can you run this command and post it back here
DBCC MEMORYSTATUS
--
Hilary Cotter
Director of Text Mining and Database Strategy
RelevantNOISE.Com - Dedicated to mining blogs for business intelligence.
This posting is my own and doesn't necessarily represent RelevantNoise's
positions, strategies or opinions.
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"Isaac Alexander" <isaacNOSPAM@.goNOSPAMprocura.com> wrote in message
news:u9F8XcqqGHA.2068@.TK2MSFTNGP03.phx.gbl...
>I have a customer using SQL Server 2000 Enterprise Edition on two clustered
> servers (Windows 2003 SP1) with the following spec (times two):
> 4 x Intel Xeon Processors @. 2.7GHz
> 3.5GB RAM
> 36GB Local Hard Drives
> 175GB of SAN space for Data and log files
> The database is around 2.5 GB.
> I have a Cache Hit Ratio that is static at 70. I've never seen a Cache
> Hit
> Ratio this low on any other customers let alone one that doesn't change.
> It doesn't fluctuate at all. It has a minimum of 70, an average of 70,
> and
> a maximum of 70 over a 24 hour period with more than 240 user connections.
> This seems strange to me. Is there a setting that caps the cache hit
> ratio?
> I would expect it to be > 90.
> Any comments or suggestions would be great.
>|||"Hilary Cotter" <hilary.cotter@.gmail.com> wrote in message
news:uv0XKFsqGHA.928@.TK2MSFTNGP04.phx.gbl...
> Can you run this command and post it back here
> DBCC MEMORYSTATUS
> --
As requested...
Buffer Distribution Buffers
-- --
Stolen 5444
Free 936
Procedures 37946
Inram 0
Dirty 6306
Kept 0
I/O 0
Latched 700
Other 155172
Buffer Counts Buffers
-- --
Commited 206504
Target 206504
Hashed 162178
InternalReservation 1214
ExternalReservation 47
Min Free 536
Visible 206504
Procedure Cache Value
-- --
TotalProcs 10694
TotalPages 37946
InUsePages 14862
Dynamic Memory Manager Buffers
-- --
Stolen 43379
OS Reserved 976
OS Committed 954
OS In Use 948
General 4588
QueryPlan 37474
Optimizer 993
Utilities 17
Connection 995
Global Memory Objects Buffers
-- --
Resource 2398
Locks 135
XDES 73
SQLCache 1536
Replication 2
LockBytes 2
ServerGlobal 32
Query Memory Objects Value
-- --
Grants 1
Waiting 0
Available (Buffers) 139633
Maximum (Buffers) 139691
Optimization Queue Value
-- --
Optimizing 1
Waiting 0
Available 31
Maximum 32
DBCC execution completed. If DBCC printed error messages, contact your
system administrator.
Thank you for your help so far.
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