Re: [GENERAL] Performance degradation when using auto_explain

2017-01-04 Thread Kisung Kim
On Wed, Jan 4, 2017 at 1:21 AM, Andreas Kretschmer < akretsch...@spamfence.net> wrote: > Kisung Kim wrote: > > > And finally I found that auto_explain is the cause of the problem. > > real hardware or virtual hardware? On virtual there are sometimes > problems with

[GENERAL] Performance degradation when using auto_explain

2017-01-03 Thread Kisung Kim
auto_explain is the cause of the problem. I am curious now, why auto_explain incurs contentions between the session? I use Ubuntu linux. Is it a problem of gettimeofday()? Thank you. Kisung Kim -- Bitnine Global Inc., Kisung Kim, Ph.D https://sites.google.com/site/kisungresearch/ E-mail : ks

Re: [GENERAL] MongoDB 3.2 beating Postgres 9.5.1?

2016-07-19 Thread Kisung Kim
think turning off no logging option is not fair. Am I wrong about MongoDB's behavior? (C)Bitnine, Kisung Kim, Ph.D https://sites.google.com/site/kisungresearch/ E-mail : ks...@bitnine.net Office phone : 070-4800-5890, 408-606-8602 US Mobile phone : 408-805-2192 2016-03-19 5:05

Re: [GENERAL] MongoDB 3.2 beating Postgres 9.5.1?

2016-07-18 Thread Kisung Kim
Of course, I do not create GIN index. Maybe the problem is related to checkpoint and WAL. I don't know how to make the comparison with MongoDB fair enough. (C)Bitnine, Kisung Kim, Ph.D https://sites.google.com/site/kisungresearch/ E-mail : ks...@bitnine.net Office phone : 070-4800-5890

Re: [GENERAL] MongoDB 3.2 beating Postgres 9.5.1?

2016-07-18 Thread Kisung Kim
think turning off no logging option is not fair. Am I wrong about MongoDB's behavior? (C)Bitnine, Kisung Kim, Ph.D https://sites.google.com/site/kisungresearch/ E-mail : ks...@bitnine.net Office phone : 070-4800-5890, 408-606-8602 US Mobile phone : 408-805-2192 2016-03-19 5:05