Re: [HACKERS] Re: [ADMIN] v7.1b4 bad performance

2001-02-23 Thread Hiroshi Inoue
bench -i inoue2 . pgbench -i inoue10 3) invoke a modified pgbench pgbench -c 10 -t 100 inoue I've attached a patch to change pgbench so that each connection connects to different database whose name is 'xxxx%d'( is th

RE: [HACKERS] Re: [ADMIN] v7.1b4 bad performance

2001-02-23 Thread Hiroshi Inoue
nch" isn't a pgbench any more and I didn't intend to change pgbench's spec like that. Probably it was my mistake that I had posted my test cases using the form of patch. My intension was to clarify the difference of my test cases. However heavy conflicts with scaling factor 1 doesn't seem preferable at least as the default of pgbench. Regards, Hiroshi Inoue

Re: [HACKERS] Re: [ADMIN] v7.1b4 bad performance

2001-02-23 Thread Hiroshi Inoue
Tom Lane wrote: > > "Hiroshi Inoue" <[EMAIL PROTECTED]> writes: > >> Hmm, you mean you set up a separate test database for each pgbench > >> "client", but all under the same postmaster? > > > Yes. Different database is to make the confl

RE: [HACKERS] Re: [ADMIN] v7.1b4 bad performance

2001-02-23 Thread Hiroshi Inoue
> -Original Message- > From: Tom Lane [mailto:[EMAIL PROTECTED]] > > Hiroshi Inoue <[EMAIL PROTECTED]> writes: > > I changed pgbench so that different connection connects > > to the different database and got the following results. > > Hmm, you mean

Re: [HACKERS] Re: [ADMIN] v7.1b4 bad performance

2001-02-23 Thread Hiroshi Inoue
Tom Lane wrote: > > Hiroshi Inoue <[EMAIL PROTECTED]> writes: > > In your test cases I always see "where bid = 1" at "update branches" > > i.e. > > update branches set bbalance = bbalance + ... where bid = 1 > > > ISTM there&#

Re: [HACKERS] Re: [ADMIN] v7.1b4 bad performance

2001-02-23 Thread Hiroshi Inoue
Tom Lane wrote: > > Hiroshi Inoue <[EMAIL PROTECTED]> writes: > > I've been suspicious if pgbench is an (unique) > > appropiriate test case for evaluaing commit_delay. > > Of course it isn't. Never trust only one benchmark. > > I've asked

Re: [HACKERS] Re: [ADMIN] v7.1b4 bad performance

2001-02-23 Thread Hiroshi Inoue
uot;where bid = 1" at "update branches" i.e. update branches set bbalance = bbalance + ... where bid = 1 ISTM there's no multiple COMMIT in your senario-s due to their lock conflicts. Regards, Hiroshi Inoue