Re: [PERFORM] Postgresql on SAN
Josh Berkus wrote: See above. Also keep in mind that PostgreSQL's use of I/O should improve 100% in version 7.5. Really? What happened? ---(end of broadcast)--- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])
Re: [PERFORM] Postgresql on SAN
Josh Berkus wrote: Anjan, Has anyone designed/implemented postgresql server on storage networks? Yes, Zapatec.com runs their stuff this way. Probably others as well. Are there any design considerations? I don't know. Probably. Are there any benchmarks for storage products (HBAs, Switches, Storage Arrays)? Not specific to PostgreSQL.I'm sure there are generic benchmarks. Keep in mind that PostgreSQL needs lots of 2-way I/O, batch writes, and random reads. Any recommendation on the design, resources, references, keeping PG in mind? See above. Also keep in mind that PostgreSQL's use of I/O should improve 100% in version 7.5. We run PG on a SAN array. We currently have it setup so a single PG instance runs off of a single LUN, this includes the WAL logs. Apart from that we have made no other special considerations; we just treat it as a fast RAID array. We haven't got to the stage where the speed of the SAN is a problem as load hasn't increased as expected. This will change, when it does I am sure the performance list will be hearing from us ;-). Out current limitations, as I see it, are amount of memory and then processing power. The only problem we have had was a dodgy set of kernel modules (drivers) for the fibre cards, this was because they were beta drivers and obviously still had a few bugs. This was solved by reverting to an older version. Everything has run smoothly since then (uptime is 153 days :-)). Nick ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
Re: [PERFORM] Postgresql on SAN
Anjan, > Has anyone designed/implemented postgresql server on storage networks? Yes, Zapatec.com runs their stuff this way. Probably others as well. > Are there any design considerations? I don't know. Probably. > Are there any benchmarks for storage products (HBAs, Switches, Storage > Arrays)? Not specific to PostgreSQL.I'm sure there are generic benchmarks. Keep in mind that PostgreSQL needs lots of 2-way I/O, batch writes, and random reads. > Any recommendation on the design, resources, references, keeping PG in > mind? See above. Also keep in mind that PostgreSQL's use of I/O should improve 100% in version 7.5. -- -Josh Berkus Aglio Database Solutions San Francisco ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
[PERFORM] Postgresql on SAN
Title: Message Hello, Has anyone designed/implemented postgresql server on storage networks? Are there any design considerations? Are there any benchmarks for storage products (HBAs, Switches, Storage Arrays)? Any recommendation on the design, resources, references, keeping PG in mind? Thanks,Anjan ** This e-mail and any files transmitted with it are intended for the use of the addressee(s) only and may be confidential and covered by the attorney/client and other privileges. If you received this e-mail in error, please notify the sender; do not disclose, copy, distribute, or take any action in reliance on the contents of this information; and delete it from your system. Any other use of this e-mail is prohibited.
