Thursday, May 24, 2012

Again about SharePoint list performance…

We have been refactoring some elements of our SharePoint HR solution in terms of improving the performance of reading data from SharePoint lists (thousands of items).

I’d like to share few “bottlenecks” we faced and their solutions.

1. ViewFields property of SPQuery
There are a lot of recommendations to use SPQuery.ViewFields property to limit the set of fields returned by your query.

However, sometimes it is ignored when you need to read all the fields you have created.

We recommend defining this property anyway as far as SPQuery would read a number of internal fields, which you probably do not need.

So in our case defining all our custom fields in combination with ViewFieldsOnly = True gave the significant performance improvement.

2. SPUser field
User field is quite useful and popular when designing custom lists. However creating an SPUser object based on a field value takes very long time.

The good news that in a lot of cases (like our) you do not really need a full SPUser object, but UserID or User Name only.

User field contains a value similar to a Lookup (like, “1;#John Smith”).

So instead of creating SPUser object, we just parsed that string and took ID and Name we needed.

Again significant performance improvements…

3. Lookups with additional fields.

The great new feature of SharePoint 2010 is the ability to “map” additional fields when creating a Lookup field. However that brings additional overheads when you read such data.

We had a list with 4 lookups and 2 of them had additional “mapped” fields.

Reading only 2000 items have been taking a lot of time

That’s a mystery how SharePoint treats that internally, however deleting of only one lookup with an additional field decreased the reading time about 5 times.

Recommendation that is difficult to follow J but try to minimize lookup fields and especially mapping additional fields.



There are not any world-shaking discoveries, however still the practical recommendations, which would probably help you.

17 comments:

  1. Thx for your advice's, I'm really glad that y write about this things, cause, I have dissertation work on this theme.

    Best regards
    Toby, secure virtual data room

    ReplyDelete
  2. I hope this SharePoint is a new technology. Thanks for making awareness about SharePoint.

    ReplyDelete
  3. This comment has been removed by the author.

    ReplyDelete
  4. due diligence report is one of those terms that you may comprehend superficially yet don't have the foggiest idea how to try it. We should find out about due constancy and how to utilize it in a true setting.

    ReplyDelete
  5. Good custom box design that help manufacturers to publish brand and publicity product.

    ReplyDelete
  6. If you are looking for a best quality Packaging products the visitCustom Design Boxes in Autralia

    ReplyDelete
  7. Good sharing with all of you and great informative related to custom packaging all types of meterials or all types of services provide us.
    custom boxes with logo

    ReplyDelete
  8. laser dentistry is the utilization of lasers to treat various distinctive dental conditions. It turned out to be industrially utilized in clinical dental practice for techniques ...

    ReplyDelete
  9. how to stay motivated to lose weight Also, for more weight lose tips, consider the 20 Science-Backed to Motivate Yourself to Lose Weight. 1. Have a protein-substantial breakfast.

    ReplyDelete
  10. I read your whole content it is really helpful for me and others. the points you described above about
    property CAR MAGIC is very useful. After reading this point I am blessed to have this blog. I appreciate your work and knowledge. I will
    recommend this content to others, further people will get the advantage. Thanks!

    ReplyDelete
  11. nice blog
    http://spectraforceuae.com/index.php/services/manpower-services

    ReplyDelete
  12. Great Post!
    Check the page, "http://spectraforceuae.com/"

    ReplyDelete
  13. I recommend that you use a specialized tool to check your essays. Essay revisors is a simple and easy to use tool that helps you find errors in your essays. The tool is easy to use and all you have to do is add your essay to it for review. After checking, you will be able to see all the mistakes you made and correct them!

    ReplyDelete
  14. Hello! We have created a useful list for you which consists of 20 best text paraphrasing tools. These helpers do a great job of removing plagiarism in your text and making it look high quality and professional. You no longer need to waste your time on this. Test our paraphrasing service free now!

    ReplyDelete
  15. Hello! If you have been looking for a tool that would contain many functions for checking text for a long time, then you should pay attention to our assistant! This handy online tool has already been tested by many students and has gained confidence as the most functional and accurate tool for checking text. Plus it's free! >> complete sentence checkers for free

    ReplyDelete
  16. Claws Custom Boxes has a team of experts offering the best services to brands in form of exceptional, durable, and eco-friendly Cereal Boxes.

    ReplyDelete
  17. Your blog packs a punch in just a few sentences. Your words are like gems. Thank you for sharing this! A quick, delightful read that left me inspired.family lawyer cost .

    ReplyDelete