| From: | Tatsuo Ishii <ishii(at)sraoss(dot)co(dot)jp> |
|---|---|
| To: | y-asaba(at)sraoss(dot)co(dot)jp |
| Cc: | pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: Wrong result with pgbench -C option? |
| Date: | 2008-03-19 00:29:56 |
| Message-ID: | 20080319.092956.119869332.t-ishii@sraoss.co.jp |
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| Thread: | |
| Lists: | pgsql-patches |
Patch applied. Thanks.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
> Hi,
>
> I ran pgbench with -C option. Here is an output.
>
> % pgbench -C -c 10 -t 100 bench
> starting vacuum...end.
> transaction type: TPC-B (sort of)
> scaling factor: 1
> number of clients: 10
> number of transactions per client: 100
> number of transactions actually processed: 1000/1000
> tps = 83.209663 (including connections establishing)
> tps = 83.209663 (excluding connections establishing)
>
> The first tps was equal to the second tps. I think it is wrong because
> pgbench with -C option connects per transaction.
>
> The attached patch calculates total connection time. Here is an output
> with revised pgbench.
>
> % ./pgbench -C -c 10 -t 100 bench
> starting vacuum...end.
> transaction type: TPC-B (sort of)
> scaling factor: 1
> number of clients: 10
> number of transactions per client: 100
> number of transactions actually processed: 1000/1000
> tps = 108.410991 (including connections establishing)
> tps = 228.657561 (excluding connections establishing)
>
> Regards,
> --
> Yoshiyuki Asaba
> y-asaba(at)sraoss(dot)co(dot)jp
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