| From: | sdv mailer <sdvmailer(at)yahoo(dot)com> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Rod Taylor <pg(at)rbt(dot)ca>, Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>, Scott Marlowe <scott(dot)marlowe(at)ihs(dot)com>, steve(at)blighty(dot)com, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: PostgreSQL pre-fork speedup |
| Date: | 2004-05-06 16:19:56 |
| Message-ID: | 20040506161956.49540.qmail@web60206.mail.yahoo.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Hi Bruce,
Sorry for the confusion because Rod asked a question
and I answered too quickly. This is what I mean.
15x Slower:
-----------
Client <--TCP--> PgPool <--UNIX--> PostgreSQL
Client <--TCP--> PgPool <--TCP--> PostgreSQL
5x Faster:
----------
Client <--UNIX--> PgPool <--UNIX--> PostgreSQL
Client <--UNIX--> PgPool <--TCP--> PostgreSQL
Hope this helps! Pgpool speeds up connection time by
5x with UNIX socket due to pre-fork and connection
pooling. However, pgpool slows down by 15x under TCP
socket for some unknown reason.
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