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Re: 1.7 timing tests: update great, checkout needs work, upgrade horrible

From: Philip Martin <philip.martin_at_wandisco.com>
Date: Thu, 09 Dec 2010 17:35:38 +0000

"Hyrum K. Wright" <hyrum_wright_at_mail.utexas.edu> writes:

> This feels really bizarre. Isn't checkout just "create an incomplete
> directory, then update it"? As such, one would think the performance
> would be comparable. Bizarre indeed....

I assume the references to improved update performance refer to update
over a few revisions near HEAD; with a small number of working copy
changes the locking can dominate. Checkout is like update from r0 to
HEAD; the large number of working copy operations mean that locking no
longer dominates.

Received on 2010-12-09 18:36:19 CET

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