Search the PG performance mailing list archive. There has been some good posts about SSD drives there related to PG use. -----Original Message----- From: pgsql-general-owner@xxxxxxxxxxxxxx [mailto:pgsql-general-owner@xxxxxxxxxxxxxx] On Behalf Of Allan Kamau Sent: Wednesday, November 10, 2010 11:42 PM To: Postgres General Postgres General Subject: Considering Solid State Drives Hi, As part of datamining activity. I have some plpgsql functions (executed in parallel, up to 6 such concurrent calls) that perform some reads and writes of large number of (maybe 10000) records at a time to a table having multi-column primary key. It seems the writing of these few thousands records is taking a long time (up to 5mins in some cases). Running vmstat reports %iowait between 15 and 24 on a single 7200rpm SATA drive, six core (Phenom II) "server". I am now thinking of investing in a SSD (Solid State Drive), and maybe choosing between "Crucial Technology 256GB Crucial M225 Series 2.5-Inch Solid State Drive (CT256M225)" and "Intel X25-M G2 (160GB) - Intel MLC". I have looked at the comparison statistics given here "http://www.anandtech.com/bench/Product/137?vs=126"; that suggests that the Intel offering is more geared for small random write operations. After googling I found little resent content (including survival statistics) of using SSDs in a write intensive database environment. Kindly advice, Allan. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
