Apologies if this is a FAQ, but... Given linux's (mis)accounting/reporting of per-process memory, including shared memory (see for example this page: http://lwn.net/Articles/230975/) how does postgresql interpret and use the information that's provided? Does it use the information as-is? Does it just accept the configuration parameters provided (e.g. -- shared_buffers, effective_cache_size, etc.)? Or does it combine its internal knowledge of what it's sharing and adjust what linux reports accordingly? I'm aware that there are lots of userspace tools for accessing what the kernel reports, but I think its reporting is still problematic, especially for apps that use shared memory. (User space tools like sar, ps, top, pmap, free, vmstat, iostat, slabinfo, et al., as well as just looking at /proc fds -- /proc/meminfo, etc.) -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
