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Tag Archive: Performance

  • SSAS Tabular performance – NUMA update

    February 12th, 2014 in Analysis Services, Blog

    How does the SSAS 2012 Tabular model performance change when you add more CPU sockets / NUMA nodes? In my last post (SSAS Tabular NUMA and CPU Cores Performance) I presented the results of some testing I’d been doing on the scalability of the SSAS 2012 Tabular model. Specifically with the performance of distinct count measures over large data volumes (50-200m distinct customers). The conclusion was that moving from 1 NUMA node (CPU socket)…

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  • SSAS Tabular – NUMA and CPU Cores Performance

    December 13th, 2013 in Analysis Services, Blog

    [UPDATE] After further investigation, I found that the tests in this post were inacurate and the results unreliable. Updated NUMA test results here In my last post (SSAS Tabular Performance – DefaultSegmentRowCount) I presented some analysis of the query performance impact of changing the DefaultSegmentRowCount setting. This post describes the next tests that I ran on the same system, investigating the impact of restricting SSAS to just 1…

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  • SSAS Tabular performance – DefaultSegmentRowCount

    December 11th, 2013 in Analysis Services, Blog

    I’m currently investigating a poorly performing Tabular model, and came across some interesting test results which seem to contradict the advice in Microsoft’s Performance Tuning of Tabular Models white paper. Some background: 7.6Gb SSAS tabular cube, running on a 2 x CPU 32 core (Xeon E5-2650 2Ghz, 2 x NUMA nodes) server with 144Gb RAM SQL Server 2012 SP1 CU7 Enterprise 167m rows of data in primary fact 80m distinct CustomerKey…

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  • Speed up SSIS by using a slower query

    February 17th, 2011 in Blog, Integration Services, SQL Server

    This isn’t a technical blog post of my own, but a shout out to Rob Farley and an excellent blog post explaining how to use SQL’s OPTION (FAST x) hint. He explains how you can speed up an SSIS data flow by slowing down the source query. It may seem illogical at first, but you’ll understand after you go and read Rob’s post! Read Rob’s post here: Speeding up SSIS using OPTION (FAST)

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  • Forecasting the Performance of SSIS packages

    October 29th, 2010 in Blog, Integration Services

    SQL Server Integration Services (SSIS) packages are used in numerous scenarios for moving data from A to B. Often they are developed and tested against a cutdown, often static, subset of data. One of the problems with this is that yes you’re testing the functionality of the package as it’s being developed, but there’s no way to determine whether the performance will scale up to a full size production environment. This level of testing is…

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  • SSRS Report Performance monitoring

    May 14th, 2008 in Blog, Reporting Services, SQL Server

    Today’s Frog-Blog top-tips are quite simple ones, but ones that I always find very useful. SSRS Report Performance monitoring. Once you start to build up a few Reporting Services reports, you need to find out how they’re performing, whether any particular reports are causing the server problems and even which users are running which reports. The following set of queries should point you in the right direction. They should all be run…

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