Search Postgresql Archives

Re: Help tuning a large table off disk and into RAM

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 9/26/07, James Williams <james.wlms@xxxxxxxxxxxxxx> wrote:

> The last is based mostly on the observation that another tiddly
> unrelated mysql db which normally runs fast, grinds to a halt when
> we're querying the postgres db (and cpu, memory appear to have spare
> capacity).

Just a quick observation here.

When the drives are thrashing, is it straight db-storage thrashing, or
is the system swapping out a lot?

Run vmstat 10 while running this query when this happens and pay
attentino to bi bo and si so

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
       choose an index scan if your joining column's datatypes do not
       match

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux