X is the number of pages in the buffer cache. 2X or 3X refer to the hash table size.
Best, Yingyi On Sun, Aug 9, 2015 at 2:51 PM, Mike Carey <[email protected]> wrote: > Can someone give a high level hint about what the 2 or 3x is x'ing? > On Aug 9, 2015 11:38 AM, "Yingyi Bu (Code Review)" < > [email protected]> wrote: > >> Yingyi Bu has posted comments on this change. >> >> Change subject: This change includes: 1. avoid calling ByteBuffer.get() >> and ByteBuffer.put() for bloom filter set/get operations. ByteBuffer will >> check boundaries of the index for get/put. It's a very frequent operation. >> 2. let the hash table size in BufferCache be 3X of >> ...................................................................... >> >> >> Patch Set 1: >> >> I don't have a strong opinion for the 3X thing. You guys decide... >> >> -- >> To view, visit https://asterix-gerrit.ics.uci.edu/345 >> To unsubscribe, visit https://asterix-gerrit.ics.uci.edu/settings >> >> Gerrit-MessageType: comment >> Gerrit-Change-Id: Ifd47c410338ce557a494ab3605660bad1899e786 >> Gerrit-PatchSet: 1 >> Gerrit-Project: hyracks >> Gerrit-Branch: master >> Gerrit-Owner: Yingyi Bu <[email protected]> >> Gerrit-Reviewer: Ian Maxon <[email protected]> >> Gerrit-Reviewer: Jenkins <[email protected]> >> Gerrit-Reviewer: Yingyi Bu <[email protected]> >> Gerrit-Reviewer: Young-Seok Kim <[email protected]> >> Gerrit-HasComments: No >> >
