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  1. MariaDB Server
  2. MDEV-9172

Analyze patches for IBM System z

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    • 10.0.23

    Description

      Please analyze the patch offered by IBM for building MariaDB 10.1 on IBM z.

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            svoj Sergey Vojtovich added a comment -

            serg, please review patch for this task.

            svoj Sergey Vojtovich added a comment - serg , please review patch for this task.
            svoj Sergey Vojtovich added a comment -

            A rough benchmark was performed on host running bb slave. In a nutshell: patched code seem to be 2-3% faster.

            Benchmark:

            SELECT NOW()+0 INTO @start_time;
            		 
            disable_query_log;
            		 
            disable_result_log;
            		 
            let $i= 5000000;
            		 
            while ($i)
            		 
            {
            		 
              SELECT 1;
            		 
              dec $i;
            		 
            }
            		 
            enable_query_log;
            		 
            enable_result_log;
            		 
            SELECT NOW()-@start_time;

            Benchmark results:

            vanilla
            		 
            -------
            		 
            215, 220, 215, 218, 215
            		 
             
            		 
            optimized
            		 
            ---------
            		 
            212, 212, 211, 212, 212

            svoj Sergey Vojtovich added a comment - A rough benchmark was performed on host running bb slave. In a nutshell: patched code seem to be 2-3% faster. Benchmark: SELECT NOW()+0 INTO @start_time; disable_query_log; disable_result_log; let $i= 5000000; while ($i) { SELECT 1; dec $i; } enable_query_log; enable_result_log; SELECT NOW()-@start_time; Benchmark results: vanilla ------- 215, 220, 215, 218, 215   optimized --------- 212, 212, 211, 212, 212
            serg Sergei Golubchik added a comment -

            ok to push

            serg Sergei Golubchik added a comment - ok to push

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              svoj Sergey Vojtovich
              kolbe Kolbe Kegel (Inactive)
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                Updated:
                Resolved:

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