i'm using Solaris8 i tried changing only postgresql parameters and time has increased of 10mn i keep in mind your idea, we will soon upgraded to solaris 10 regards Will -----Message d'origine----- De : J.K.Shah@xxxxxxx [mailto:J.K.Shah@xxxxxxx] Envoyé : mardi 14 février 2006 22:47 À : FERREIRA, William (VALTECH) Cc : Albert Cervera Areny; pgsql-performance@xxxxxxxxxxxxxx Objet : Re: [PERFORM] copy and postgresql.conf What version of Solaris are you using? Do you have the recommendations while using COPY on Solaris? http://blogs.sun.com/roller/page/jkshah?entry=postgresql_on_solaris_better_use wal_sync_method = fsync wal_buffers = 128 checkpoint_segments = 128 bgwriter_percent = 0 bgwriter_maxpages = 0 And also for /etc/system on Solaris 10, 9 SPARC use the following set maxphys=1048576 set md:md_maxphys=1048576 set segmap_percent=50 set ufs:freebehind=0 set msgsys:msginfo_msgmni = 3584 set semsys:seminfo_semmni = 4096 set shmsys:shminfo_shmmax = 15392386252 set shmsys:shminfo_shmmni = 4096 Can you try putting in one run with this values and send back your experiences on whether it helps your workload or not? Atleast I saw improvements using the above settings with COPY with Postgres 8.0 and Postgres 8.1 on Solaris. Regards, Jignesh FERREIRA, William (VALTECH) wrote: >30% faster !!! i will test this new version ... > >thanks a lot > >-----Message d'origine----- >De : pgsql-performance-owner@xxxxxxxxxxxxxx >[mailto:pgsql-performance-owner@xxxxxxxxxxxxxx]De la part de Albert >Cervera Areny >Envoyé : mardi 14 février 2006 17:07 >À : pgsql-performance@xxxxxxxxxxxxxx >Objet : Re: [PERFORM] copy and postgresql.conf > > > >Sorry, COPY improvements came with 8.1 > >(http://www.postgresql.org/docs/whatsnew) > >A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure: > > >>thanks, >> >>i'm using postgresql 8.0.3 >>there is no primary key and no index on my tables >> >>regards >> >>-----Message d'origine----- >>De : pgsql-performance-owner@xxxxxxxxxxxxxx >>[mailto:pgsql-performance-owner@xxxxxxxxxxxxxx]De la part de Albert >>Cervera Areny >>Envoyé : mardi 14 février 2006 12:38 >>À : pgsql-performance@xxxxxxxxxxxxxx >>Objet : Re: [PERFORM] copy and postgresql.conf >> >> >> >>Hi William, >> which PostgreSQL version are you using? Newer (8.0+) versions have some >> >>important performance improvements for the COPY command. >> >> Also, you'll notice significant improvements by creating primary & foreign >> >>keys after the copy command. I think config tweaking can improve key and >> >>index creation but I don't think you can improve the COPY command itself. >> >> There are also many threads in this list commenting on this issue, you'll >> >>find it easely in the archives. >> >>A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure: >> >> >>>hi, >>> >>>i load data from files using copy method. >>>Files contain between 2 and 7 millions of rows, spread on 5 tables. >>> >>>For loading all the data, it takes 40mn, and the same processing takes >>>17mn with Oracle. I think that this time can be improved by changing >>>postgresql configuration file. But which parameters i need to manipulate >>>and with which values ? >>> >>>Here are the specifications of my system : >>>V250 architecture sun4u >>>2xCPU UltraSparc IIIi 1.28 GHz. >>>8 Go RAM. >>> >>>Regards. >>> >>> Will >>> >>> >>>This e-mail is intended only for the above addressee. It may contain >>>privileged information. If you are not the addressee you must not copy, >>>distribute, disclose or use any of the information in it. If you have >>>received it in error please delete it and immediately notify the sender. >>>Security Notice: all e-mail, sent to or from this address, may be >>>accessed by someone other than the recipient, for system management and >>>security reasons. This access is controlled under Regulation of >>>Investigatory Powers Act 2000, Lawful Business Practises. >>> >>>---------------------------(end of broadcast)--------------------------- >>>TIP 4: Have you searched our list archives? >>> >>> http://archives.postgresql.org >>> >>> >>-- >> >>Albert Cervera Areny >>Dept. Informàtica Sedifa, S.L. >> >>Av. Can Bordoll, 149 >>08202 - Sabadell (Barcelona) >>Tel. 93 715 51 11 >>Fax. 93 715 51 12 >> >>==================================================================== >>........................ AVISO LEGAL ............................ >>La presente comunicación y sus anexos tiene como destinatario la >>persona a la que va dirigida, por lo que si usted lo recibe >>por error debe notificarlo al remitente y eliminarlo de su >>sistema, no pudiendo utilizarlo, total o parcialmente, para >>ningún fin. Su contenido puede tener información confidencial o >>protegida legalmente y únicamente expresa la opinión del >>remitente. 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