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  1. Java Driver
  2. JAVA-631

Problems with the first query(s)

        Details

        • Type: Question
        • Status: Closed
        • Priority: Major - P3
        • Resolution: Works as Designed
        • Affects Version/s: None
        • Fix Version/s: None
        • Component/s: Performance
        • Labels:
          None
        • # Replies:
          24
        • Last comment by Customer:
          false

          Description

          https://groups.google.com/d/topic/mongodb-user/JvlCDGQI65g/discussion

          In a simple test Java application first query for 3000 elements occurs within 350-400 ms, the second and subsequent occur faster. In the same PHP application query the results are 10-15ms. This is a very serious limitation for web applications.

          I'm not sure that this is normal behavior for java driver. What could be wrong?

          1. Java Source File
            App.java
            5 kB
            Ilya Skorik
          2. Java Source File
            LoginForm.java
            1 kB
            Ilya Skorik
          3. Java Source File
            LoginForm.java
            1 kB
            Ilya Skorik
          4. Java Source File
            LoginForm.java
            2 kB
            Ilya Skorik
          5. Text File
            matrix-app.log
            47 kB
            Ilya Skorik
          6. Text File
            matrix-app.log
            48 kB
            Ilya Skorik
          7. Java Source File
            MongoConfig.java
            1 kB
            Ilya Skorik
          8. File
            mongotest.php
            0.7 kB
            Ilya Skorik

            Activity

            • Comments
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            18 older comments
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            ilyaskorik Ilya Skorik added a comment -

            https://jira.springsource.org/browse/DATAMONGO-520

            Spring-data-mongodb issue created, I will try Morphia

            Show
            ilyaskorik Ilya Skorik added a comment - https://jira.springsource.org/browse/DATAMONGO-520 Spring-data-mongodb issue created, I will try Morphia
            Hide
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            jeff.yemin Jeff Yemin added a comment -

            OK, sounds good. Good luck.

            Show
            jeff.yemin Jeff Yemin added a comment - OK, sounds good. Good luck.
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            scotthernandez Scott Hernandez added a comment -

            Ilya, please make sure connectionsForHost is set to the max number of threads which may be active. that error about semaphores says it is too low.

            Show
            scotthernandez Scott Hernandez added a comment - Ilya, please make sure connectionsForHost is set to the max number of threads which may be active. that error about semaphores says it is too low.
            Hide
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            ilyaskorik Ilya Skorik added a comment -

            Thank you all for your participation, the problem with semaphores is probably due to limitations of the client OS. Current level of performance I have more than satisfied. Thank you again!

            Show
            ilyaskorik Ilya Skorik added a comment - Thank you all for your participation, the problem with semaphores is probably due to limitations of the client OS. Current level of performance I have more than satisfied. Thank you again!
            Hide
            Permalink
            jeff.yemin Jeff Yemin added a comment -

            It's not a client OS issue. You just need to increase connectionsPerHost in MongoOptions to ensure there are enough connections to adequately account for the number of threads in the app server that are concurrently using Mongo.

            Show
            jeff.yemin Jeff Yemin added a comment - It's not a client OS issue. You just need to increase connectionsPerHost in MongoOptions to ensure there are enough connections to adequately account for the number of threads in the app server that are concurrently using Mongo.

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                Dates

                • Created:
                  Updated:
                  Resolved:
                  Days since reply:
                  4 years, 4 weeks, 4 days ago
                  Date of 1st Reply: