Re: literature on write-ahead logging
От | Merlin Moncure |
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Тема | Re: literature on write-ahead logging |
Дата | |
Msg-id | BANLkTi=SuaiXtBrm93cYmAjLEjLG7CsT=Q@mail.gmail.com обсуждение исходный текст |
Ответ на | literature on write-ahead logging (Robert Haas <robertmhaas@gmail.com>) |
Список | pgsql-hackers |
On Wed, Jun 8, 2011 at 11:24 PM, Robert Haas <robertmhaas@gmail.com> wrote: > I did a brief literature search for papers on breaking the > WAL-serialization bottleneck today and hit upon this: > > Aether: A Scalable Approach to Logging, Ryan Johnson, Ippokratis Pandis, et al. > http://infoscience.epfl.ch/record/149436/files/vldb10aether.pdf > > Section 5 appears to be the most relevant to our problems with WALInsertLock. > > They reject the approach that I proposed, wherein WAL is generated by > individual backends in their own queues and serialized later: "While a > total ordering is not technically required for correctness, valid > partial orders tend to be too complex and interdependent to be worth > pursuing as a performance optimization"; see also appendix A.5, which > may be succinctly summarized as "no one does that". heh -- makes total sense. great stuff. merlin
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