2015-12-25 20:44 GMT+03:00 Andres Freund <and...@anarazel.de>: > On December 25, 2015 6:27:06 PM GMT+01:00, "Васильев Дмитрий" > >>If so, could you provide a hierarchical before/after profile? > > > >Performance | Git hash commit | Date > >~ 360k tps | c3e7c24a1d60dc6ad56e2a0723399f1570c54224 | Thu Nov 12 > >09:12:18 > >2015 -0500 > >~ 360k tps | ac1d7945f866b1928c2554c0f80fd52d7f977772 | Thu Nov 12 > >09:00:33 2015 -0500 > >~ 960k tps | a05dc4d7fd57d4ae084c1f0801973e5c1a1aa26e | Thu Nov 12 > >07:40:31 2015 -0500 > > Profile as in perf oprofile or something. > > --- > Please excuse brevity and formatting - I am writing this on my mobile > phone. >
ac1d794: Samples: 1M of event 'cycles', Event count (approx.): 816922259995, UID: pgpro Overhead Shared Object Symbol 69,72% [kernel] [k] _raw_spin_lock_irqsave 1,43% postgres [.] _bt_compare 1,19% postgres [.] LWLockAcquire 0,99% postgres [.] hash_search_with_hash_value 0,61% postgres [.] PinBuffer 0,46% postgres [.] GetSnapshotData a05dc4d: Samples: 1M of event 'cycles', Event count (approx.): 508150718694, UID: pgpro Overhead Shared Object Symbol 4,77% postgres [.] GetSnapshotData 4,30% postgres [.] _bt_compare 3,13% postgres [.] hash_search_with_hash_value 3,08% postgres [.] LWLockAcquire 2,09% postgres [.] LWLockRelease 2,03% postgres [.] PinBuffer Perf record generate big traffic: time perf record -u pgpro -g --call-graph=dwarf ^C[ perf record: Woken up 0 times to write data ] Warning: Processed 1078453 events and lost 18257 chunks! Check IO/CPU overload! [ perf record: Captured and wrote 8507.985 MB perf.data (1055663 samples) ] real 0m8.791s user 0m0.678s sys 0m8.120s If you want i give you ssh-access.
