Input Operation Test with UUID Data Type
How to run an input operation test with INSERT statements on UUID data type?
If you want to see the impact of larger data type like 16-byte UNIQUEIDENTIFIER (UUID), comparing to the 4-byte INT and 8-byte BIGINT, you can follow this tutorial.
Create the following SQL script, fyi_uuid_insert.sql:
-- fyi_uuid_insert.sql -- Copyright (c) FYIcenter.com DECLARE @Count INT SET @Count = 100 DECLARE @I INT DECLARE @STime DATETIME DECLARE @ETime DATETIME DECLARE @Duration INT CREATE TABLE FYI_UUID (UUID UNIQUEIDENTIFIER) SET @STime = GETDATE() SET @I = 0 WHILE @I < @Count BEGIN INSERT INTO FYI_UUID VALUES (NEWID()) SET @I = @I+1 END SET @ETime = GETDATE() DROP TABLE FYI_UUID SET @Duration = DATEDIFF(millisecond,@STime,@ETime) SELECT @Count AS Count, @Duration AS Duration, 1000*@Count/@Duration AS Throughput, @Duration/@Count AS Latency
Each record now has a single field of UNIQUEIDENTIFIER, which uses 16 bytes.
Now run the script with different @Count values on the Azure SQL Database. You will get something like:
Count Duration Throughput Latency 100 667 149 6 1000 6437 155 6 10000 65073 153 6 25000 159707 156 6
The actual input data throughput is 156 * 16 bytes/sec = 2,496 bytes/sec = 2.5 KB/sec, using the last test result.
Comparing to 4-byte INT records and 8-byte BIGINT records, inserting 8-byte BIGIN records is getting more efficient:
Data type Record size Throughput rec/sec Throughput KB/sec INT 4 231 0.9 BIGINT 8 165 1.3 UNIQUEIDENTIFIER 16 156 2.5
2019-07-30, 279👍, 0💬
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