Re: BUG #16104: Invalid DSA Memory Alloc Request in Parallel Hash
От | Tomas Vondra |
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Тема | Re: BUG #16104: Invalid DSA Memory Alloc Request in Parallel Hash |
Дата | |
Msg-id | 20191210183606.t26c5ypa7bmij3ph@development обсуждение исходный текст |
Ответ на | Re: BUG #16104: Invalid DSA Memory Alloc Request in Parallel Hash (Alvaro Herrera <alvherre@2ndquadrant.com>) |
Ответы |
Re: BUG #16104: Invalid DSA Memory Alloc Request in Parallel Hash
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Список | pgsql-bugs |
On Tue, Dec 10, 2019 at 02:35:16PM -0300, Alvaro Herrera wrote: >On 2019-Dec-10, Tomas Vondra wrote: > >> It's probably still a good idea to do this, although I wonder if we >> might start doing this only when actually running out of bits (and use >> the current algorithm by default). But I have no idea if that would be >> any cheaper, and it would add complexity. > >I'm under the impression that this patch is proposed for backpatching, >and that in master we can simply increase the hash width. > Possibly, although AFAIK we don't have that patch yet, and I don't recall any measurements (so it might have overhead too, not sure). But it's true additional complexity might complicate backpatching. regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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