Re: [Monotone-devel] Unnecessary performance hit on push?

[Nathaniel Smith]

On Fri, Sep 30, 2005 at 09:09:55PM +0200, Marcel van der Boom wrote:
> However, at least on osx, i see some rather weird behaviour:
[...]
> What on earth is the system doing during the 7 mins?  After the  
> "Found 123 branches" theoretically it loops 122 times with 1 find  
> statement to execute in each loop?
> The second and later runs stay around 12-15 secs which seems normal.  
> The long delay between the "Found 123 branches" and the "Branch has  
> 77 revs to consider" is then gone too.

Just a guess, but what happens if you put a transaction guard around
the whole chunk?  (OS X has extra-paranoid disk-flushing stuff, that
makes wrapping multiple writes into a single transaction _very_
important.  I don't know why it would matter here, since naively it
looks like we're just reading, but...)

  transaction_guard guard(app.db);
  <do stuff>
  guard.commit();

-- Nathaniel

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