Re: [Monotone-devel] speed of 0.99

[Timothy Brownawell]

On 11/19/2010 04:31 AM, Markus Wanner wrote:
> Hi,
>
> I've recently upgraded to monotone 0.99, mainly to get the new commit
> message editor. Thanks for that!
>
> However, it seems to me it's quite a bit slower than previous versions.
> Which weren't exactly fast, either, but 'mtn status' and 'mtn ls
> branches' seems to take half an eternity. (Admittedly, I'm keeping all
> of my projects in one database file, which certainly doesn't help speed,
> because that one file is getting close to 1 GiB in size).
>
> Is this just subjective, or did anybody else notice a similar slowdown?
> It this worth investigating?

My db is 785MB, and the copies for 0.45 and 0.48 are 639MB. This is in a 
checkout of the monotone tree.

                  |      hot cache     |     cold cache     |
                  | head | 0.45 | 0.48 | head | 0.45 | 0.48 |
status            | .16s | .16s | .16s | 1.2s | .45s | 1.2s |
  w/o inodeprints | .22s | .22s | .22s | 1.7s | .89s | 1.5s |
ls branches       | .13s | 4.1s | .13s | 1.1s | 5.3s | .97s |

So it looks like 'ls branches' may have slowed down a tiny bit since 
0.48, and 'status' is slightly slower since 0.45 (but only on a cold cache).

I'd think that the additional time in 'status' is from the extra info we 
output now, probably mostly the check for whether a commit would create 
an extra head. But 'mtn heads' only takes .15s cold-cache, so there's 
still around .7s missing...

--
Timothy

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