On Tue, Sep 6, 2011 at 4:33 AM, Tatsuo Ishii <is...@postgresql.org> wrote: > I am interested in this thread because I may be able to borrow a big > IBM machine and might be able to do some tests on it if it somewhat > contributes enhancing PostgreSQL. Is there anything I can do for this?
That would be great. What I've been using as a test case is pgbench -S -c $NUM_CPU_CORES -j $NUM_CPU_CORES with scale factor 100 and shared_buffers=8GB. I think what you'd want to compare is the performance of unpatched master, vs. the performance with this line added to s_lock.h for your architecture: #define TAS_SPIN(lock) (*(lock) ? 1 : TAS(lock)) We've now added that line for ia64 (the line is present in two different places in the file, one for GCC and the other for HP's compiler). So the question is whether we need it for any other architectures. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers