Sorry, forgot to cc the list. On Mon, Aug 29, 2011 at 10:12 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Also, if the PPC machine really is hyperthreaded (the internal webpage > for it says "Hyper? True" but /proc/cpuinfo doesn't provide any clear > indications), that might mean it's not going to scale too well past 16x > the single-thread case.
According to IBM docs [1], 8406-71Y contains one 8 core POWER7 chip that is 4-way multi-threaded and has 4 memory channels. X4600M2 should have 16 memory channels, although at 2/3 the transfer rate. 6GB of memory is a strange amount for the IBM, according to specs it should take 4 or 8GB DIMMs in pairs. Sounds like the server is split into multiple partitions. -- Ants Aasma [1] http://www.redbooks.ibm.com/redpapers/pdfs/redp4655.pdf -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
