Re: help with pg_dump timings
От | Jim C. Nasby |
---|---|
Тема | Re: help with pg_dump timings |
Дата | |
Msg-id | 20051017142852.GV86144@pervasive.com обсуждение исходный текст |
Ответ на | Re: help with pg_dump timings (Arnau Rebassa Villalonga <arebassa@andromeiberica.com>) |
Список | pgsql-admin |
On Fri, Oct 14, 2005 at 04:56:27PM +0200, Arnau Rebassa Villalonga wrote: > Hi, > > >Also, what -Z compression level equals the compression of gzip? I've > >played with -Z9, but it seems to compress better than gzip (but takes a > >bit longer). > > I haven't done timing measurements but what I have noticed is that if > you use the custom format and after you try to compress the resultant > file, the size is not reduced that much, so it's not worth to spend time > compressing. I haven't read the source, but I believe that by default custom format dumps are compressed at zlib level 6. So if you want to compress them yourself, you should sepcify -Z0. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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