SQL Clone
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


Data Compression Objects


Data Compression Objects

Author
Message
sneumersky
sneumersky
SSCrazy
SSCrazy (2.5K reputation)SSCrazy (2.5K reputation)SSCrazy (2.5K reputation)SSCrazy (2.5K reputation)SSCrazy (2.5K reputation)SSCrazy (2.5K reputation)SSCrazy (2.5K reputation)SSCrazy (2.5K reputation)

Group: General Forum Members
Points: 2490 Visits: 487
Our data warehouse got a compression ratio of 68% using page compression. The best compression ratios are usually with star schemas with all (or close to all) integer surrogate keys. However, beware of compression's effect on data loading time. If you already are squeezing your data load into a small window of time or if your data load is CPU bound, you MAY be in for a surprise.

See The Data Loading Performance Guide for how compression affects CPU usage/data loading time and much, much more. It was created for SQL Server 2008, but it remains relevant today.

http://technet.microsoft.com/en-us/library/dd425070(v=sql.100).aspx
Revenant
Revenant
SSCertifiable
SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)

Group: General Forum Members
Points: 7359 Visits: 4863
Elementary dear Watson, er, Jones. :-)

Thanks, Steve!
Stewart "Arturius" Campbell
Stewart "Arturius" Campbell
SSCrazy Eights
SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)

Group: General Forum Members
Points: 8917 Visits: 7281
Nice one, thanks Steve
We have been applying page compression on our ods and data warehouses and have saved in ezcess of 1TB in storage. The day-end process doesn't take any longer, just the cpu usage has increased by about 5%.

____________________________________________
Space, the final frontier? not any more...
All limits henceforth are self-imposed.
“libera tute vulgaris ex”
TomThomson
TomThomson
SSChampion
SSChampion (14K reputation)SSChampion (14K reputation)SSChampion (14K reputation)SSChampion (14K reputation)SSChampion (14K reputation)SSChampion (14K reputation)SSChampion (14K reputation)SSChampion (14K reputation)

Group: General Forum Members
Points: 14314 Visits: 12197
Nice tidy question on a well documented issue, so I'm surprised that more than 30% so far have it wrong.

Tom

Anipaul
Anipaul
SSCertifiable
SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)

Group: General Forum Members
Points: 7313 Visits: 1407
Nice question....



SQLRNNR
SQLRNNR
SSC-Dedicated
SSC-Dedicated (32K reputation)SSC-Dedicated (32K reputation)SSC-Dedicated (32K reputation)SSC-Dedicated (32K reputation)SSC-Dedicated (32K reputation)SSC-Dedicated (32K reputation)SSC-Dedicated (32K reputation)SSC-Dedicated (32K reputation)

Group: General Forum Members
Points: 32403 Visits: 18556
Ford Fairlane (12/17/2013)
Koen Verbeeck (12/17/2013)
I have been enabling page compression on our entire data warehouse recently, so this was a pretty easy question :-)


Whats your performance been like since ?


I don't know about Koens perf gains, but I typically see a significant gain in performance. I have seen queries run up to 10x faster with 1/10 the IO. Sure there may be more CPU, but it is for a shorter duration. I'm a little picky in where I compress though.



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

sqlnaive
sqlnaive
SSCarpal Tunnel
SSCarpal Tunnel (4.3K reputation)SSCarpal Tunnel (4.3K reputation)SSCarpal Tunnel (4.3K reputation)SSCarpal Tunnel (4.3K reputation)SSCarpal Tunnel (4.3K reputation)SSCarpal Tunnel (4.3K reputation)SSCarpal Tunnel (4.3K reputation)SSCarpal Tunnel (4.3K reputation)

Group: General Forum Members
Points: 4287 Visits: 2774
Guess what, simple straightforward question for those who read. I was the fortunate one. :-)
pchirags
pchirags
SSCrazy
SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)SSCrazy (2.4K reputation)

Group: General Forum Members
Points: 2351 Visits: 615
nice and easy..
thanks steve.
jfgoude
jfgoude
Ten Centuries
Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)

Group: General Forum Members
Points: 1216 Visits: 299
easy one just logical answer after eliminating obviously incorrect ones
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