Firebird.performance.testing

Firebird Performance Testing 19-OCT-2010 Dmitry Yemanov dimitr@firebirdsql.org Alexey Kovyazin, IBSurgeon test@ib-aid.com

Basic considerations ● Learn the used test in details. Make sure you understand its goal. Figure out what is actually being tested. ● Pay attention to the hardware and software setup. Avoid exotic configurations. ● Take caching effects and differencies among runs into account. Remove extreme values from the results or comment them appropriately. ● Don't compare apples to oranges.

Firebird settings ● Architecture: Classic or SuperServer. ● Database page size. ● Page cache size. Remember about the filesystem cache. ● Sort buffer size. It differs between CS and SS. ● Lock table settings: LockMemSize, LockHashSlots. ● Forced writes setting. ● Garbage collection policy.

Testing analytic queries ● Single user ● Involves optimizer decisions and raw execution efficiency ● Hardware: Intel Core2 2.4GHz Quad, 4GB RAM, SATA2 HDD 7200rpm ● Firebird settings: Classic Server, 256 buffer pages ● Results are in seconds, the less the better

Total time spent 2500 FB 2.1 : 2052 s FB 2.5 : 271 s 2000 1500 FB 2.1 FB 2.5 1000 500 0 1

Time distribution among tests 2000 1800 1600 1400 1200 1000 FB 2.1 FB 2.5 800 600 400 200 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

FB cache vs OS cache ● Database is 1.5GB ● 1.5GB of Firebird page cache and disabled OS filesystem cache ● 1MB of Firebird page cache and enabled OS filesystem cache ● Results are in seconds, the less the better

Total time spent 800 FB cache : 709 s OS cache : 271 s 700 600 500 400 FB cache OS cache 300 200 100 0 1

Time distribution among tests 400 350 300 250 200 FB cache OS cache 150 100 50 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Load speed test ● 4 concurrent users ● Database sizes: 9Gb and 22Gb ● Hardware: Intel Core2 2.4GHz Quad, 4GB RAM, SATA2 HDD 7200rpm ● Firebird settings: Classic vs SuperClassic, 256 buffer pages ● Firebird versions: 2.1 Classic, 2.5 SuperClassic ● Results are seconds, the less the better

Classic vs SuperClassic Load 2000 Database 9Gb loading: 1800 1600 1400 2.1 CS : 1759 sec 1200 2.5 CS : 1130 sec 1000 800 2.5 SC: 1302 sec 600 400 200 0 2.1 Classic 2.5 Classic 2.5 SuperClassic 5000 Database 22Gb loading: 4500 4000 3500 2.1 CS : 4290 sec 3000 2500 2.5 CS : 3971 sec 2000 2.5 SC: 3328 sec 1500 1000 500 0 2.1 Classic 2.5 Classic 2.5 SuperCalssic

Testing concurrency ● Many concurrent users ● Involves raw execution efficiency as well as overall scalability ● Hardware: Intel Core2 2.4GHz, 4GB RAM, SATA2 HDD 7200rpm ● Firebird settings: Classic vs SuperClassic, 256 buffer pages ● Results are in completed transactions per minute, the more the better

Classic vs SuperClassic 350 100 users: 300 CS : 282 tpm 250 SC : 313 tpm 200 CS 250 users: SC 150 100 CS : 159 tpm SC : 181 tpm 50 0 100 users 250 users

Thank you! Questions? test@ib-aid.com

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Firebird.performance.testing

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