Re: [PERFORM] Help with count(*)

2003-11-16 Thread Tom Lane
Neil Conway <[EMAIL PROTECTED]> writes: > Tom Lane <[EMAIL PROTECTED]> writes: >> (I believe the previous discussion also agreed that we wanted to >> postpone the freezing of now(), which currently also happens at >> BEGIN rather than the first command after BEGIN.) > That doesn't make sense to me

Re: [PERFORM] Help with count(*)

2003-11-15 Thread Neil Conway
Tom Lane <[EMAIL PROTECTED]> writes: > (I believe the previous discussion also agreed that we wanted to > postpone the freezing of now(), which currently also happens at > BEGIN rather than the first command after BEGIN.) That doesn't make sense to me: from a user's perspective, the "start of the

Re: [PERFORM] Help with count(*)

2003-11-15 Thread Dennis Bjorklund
On Fri, 14 Nov 2003, Tom Lane wrote: > I believe the previous discussion also agreed that we wanted to postpone > the freezing of now(), which currently also happens at BEGIN rather than > the first command after BEGIN. Or should that happen at the first call to now()? /me should ge back and try

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Andrew Sullivan
On Fri, Nov 14, 2003 at 02:16:56PM -0500, Christopher Browne wrote: > otherwise-unoccupied connection in the pool, in effect, doing a sort > of "vacuum" of the connections. I don't get very favorable reactions > when I suggest that, though... Because it's a kludge on top of another kludge, perhap

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Tom Lane
Will LaShell <[EMAIL PROTECTED]> writes: > Hannu Krosing wrote: >> Can't the backend be made to delay the "real" start of transaction until >> the first query gets executed ? > That seems counter intuitive doesn't it? Why write more code in the > server when the client is the thing that has the

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Christopher Browne
After a long battle with technology, [EMAIL PROTECTED] (Hannu Krosing), an earthling, wrote: > Christopher Browne kirjutas R, 14.11.2003 kell 16:13: >> Martha Stewart called it a Good Thing when [EMAIL PROTECTED] (Rajesh Kumar Mallah) >> wrote: >> > INFO: "profiles": found 0 removable, 369195 no

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Will LaShell
Hannu Krosing wrote: Christopher Browne kirjutas R, 14.11.2003 kell 16:13: Martha Stewart called it a Good Thing when [EMAIL PROTECTED] (Rajesh Kumar Mallah) wrote: INFO: "profiles": found 0 removable, 369195 nonremovable row versions in 43423 pages DETAIL: 246130 dead row versions canno

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Tom Lane
Hannu Krosing <[EMAIL PROTECTED]> writes: > Christopher Browne kirjutas R, 14.11.2003 kell 16:13: >> I have seen this happen somewhat-invisibly when a JDBC connection >> manager opens transactions for each connection, and then no processing >> happens to use those connections for a long time. The

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Hannu Krosing
Christopher Browne kirjutas R, 14.11.2003 kell 16:13: > Martha Stewart called it a Good Thing when [EMAIL PROTECTED] (Rajesh Kumar Mallah) > wrote: > > INFO: "profiles": found 0 removable, 369195 nonremovable row versions in 43423 > > pages > > DETAIL: 246130 dead row versions cannot be removed

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Christopher Browne
Martha Stewart called it a Good Thing when [EMAIL PROTECTED] (Rajesh Kumar Mallah) wrote: > INFO: "profiles": found 0 removable, 369195 nonremovable row versions in 43423 pages > DETAIL: 246130 dead row versions cannot be removed yet. > Nonremovable row versions range from 136 to 2036 bytes long

Re: [PERFORM] Help with count(*)

2003-11-14 Thread Shridhar Daithankar
On Friday 14 November 2003 12:51, Rajesh Kumar Mallah wrote: > Hi , > > my database seems to be taking too long for a select count(*) > i think there are lot of dead rows. I do a vacuum full it improves > bu again the performance drops in a short while , > can anyone please tell me if anything worn

[PERFORM] Help with count(*)

2003-11-14 Thread Rajesh Kumar Mallah
Hi , my database seems to be taking too long for a select count(*) i think there are lot of dead rows. I do a vacuum full it improves bu again the performance drops in a short while , can anyone please tell me if anything worng with my fsm settings current fsm=55099264 (not sure how i calculate