[ZODB-Dev] increasing order of oids?

[Jürgen Herrmann]

hi there!

is there a strict requirement for oids to be increasing? having read
a ton of code my head is not so sure anymore, though i can't remember
seeing a requirement for such anywhere in the code.

if RadosStorage could pre-allocate oids in batches of thousands, that
would probably give me a big performance win, or to put it the other
way round: rados is not designed to be used for such time-critical and
at the same time completely synced operations. and getting new oids
will happen often...

best regards,
jürgen
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Re: [ZODB-Dev] increasing order of oids?

[Shane Hathaway]

Jürgen Herrmann wrote:
 is there a strict requirement for oids to be increasing?

No, but obviously there is a strict requirement that new_oid() return 
unique OIDs.

 if RadosStorage could pre-allocate oids in batches of thousands, that
 would probably give me a big performance win, or to put it the other
 way round: rados is not designed to be used for such time-critical and
 at the same time completely synced operations. and getting new oids
 will happen often...

ZEO also allocates OIDs in large batches, I believe.

Shane
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