On Thu, Aug 26, 2010 at 3:40 PM, Markus Wanner <mar...@bluegap.ch> wrote: > On 08/26/2010 09:22 PM, Tom Lane wrote: >> >> Not having to have a hard limit on the space for unconsumed messages? > > Ah, I see. However, spilling to disk is unwanted for the current use cases > of imessages. Instead the sender needs to be able to deal with > out-of-(that-specific-part-of-shared)-memory conditions.
Shared memory can be paged out, too, if it's not being used enough to keep the OS from deciding to evict it. And I/O to a mmap()'d file or shared memory region can remain in RAM. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
