Re: [PERFORM] why after increase the hash table partitions, tpmc decrease

2014-09-02 Thread Takashi Horikawa
use it leads to an increase in overhead of LockReleaseAll() in src/backend/storage/lmgr/lock.c. I recommends that LOG2_NUM_LOCK_PARTITIONS should not be increased so much. Best regards, Takashi Horikawa -- > -Original Message- > From: pgsql-performance-ow...@postgresql.org > [mai

Re: [PERFORM] Stalls on PGSemaphoreLock

2014-03-25 Thread Takashi Horikawa
latch-free buffer manager, proposed in my paper, would take long time, since it is not unincorporated in the upstream. -- Takashi Horikawa, Ph.D., Knowledge Discovery Research Laboratories, NEC Corporation. smime.p7s Description: S/MIME cryptographic signature