Re: OSDL DBT-2 w/ PostgreSQL 7.3.4 and 7.4beta5
От | Rod Taylor |
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Тема | Re: OSDL DBT-2 w/ PostgreSQL 7.3.4 and 7.4beta5 |
Дата | |
Msg-id | 1067648641.18476.23.camel@jester обсуждение исходный текст |
Ответ на | OSDL DBT-2 w/ PostgreSQL 7.3.4 and 7.4beta5 (markw@osdl.org) |
Ответы |
Re: OSDL DBT-2 w/ PostgreSQL 7.3.4 and 7.4beta5
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Список | pgsql-hackers |
Excellent. I just noticed that most of the numbers in the system are given the numeric data type. Is there any particular reason you don't use integer (test enforced?)? On Fri, 2003-10-31 at 19:18, markw@osdl.org wrote: > I thought someone might be interested in a data point I have comparing > 7.3.4 and 7.4beta5 with results from our DBT-2 workload. Keep in mind I > haven't done much tuning with either version. The following links have > references iostat, vmstat, sar, readprofile (linux kernel profile), and > oprofile (postgresql profile) statistics. > > Results from 7.3.4: > http://developer.osdl.org/markw/dbt2-pgsql/184/ > - metric 1354.58 > > Results from 7.4beta5 > http://developer.osdl.org/markw/dbt2-pgsql/188/ > - metric 1446.01 > > 7.4beta5 offers more throughput. One significant difference I see is in > the oprofile for the database. For the additional 7% increase in the > metric, there are about 32% less ticks in SearchCatCache. > > These are the only database parameters I've explicitly set for each one, > any other differences will be differences in default values: > - shared_buffers = 40000 > - tcpip_socket = true > - checkpoint_segments = 200 > - checkpoint_timeout = 1800 > - stats_start_collector = true > - stats_command_string = true > - stats_block_level = true > - stats_row_level = true > - stats_reset_on_server_start = true > > If anyone has any tuning recommendations for either 7.3 or 7.4, I'll be > happy to try them. Or if anyone wants to be able to poke around on the > system, we can arrange that too. Feel free to ask any questions.
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