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"hg clone https://anonhg.netbsd.org/src/" still aborts, but...



Just a wee while ago it was again mentioned that 'hg clone' would be a
suitable way to download NetBSD sources, but I've been trying this off
and on for over a month now and always end up with a failure and abort
just like this attempt today:

$ hg clone https://anonhg.netbsd.org/src/ h-NetBSD-src
applying clone bundle from https://cdn.NetBSD.org/_bundles/src/77d2a2ece3a06d837da45acd0fda80086ab4113c.zstd.hg
adding changesets
adding manifests
manifests [====================================>         ] 751718/931876 48m52s
transaction abort!
rollback completed
abort: stream ended unexpectedly  (got 32754 bytes, expected 32768)

So after reading the line of output again and noticing it's a URL I
decided to try downloading th bundle directly.  This worked fine, taking
about 3 minutes for me.

I then did:  "hg init src && cd src && hg unbundle $bundle"

The unbundle finally finished the first step (unpacking all 931,876
changesets) after about 15 minutes and began on the manifests, just as
with the clone operation did.

The manifests then completed, unlike the attempts via the network,
though I don't know how long that took, and now it's checking out
439,702 "file changes", saying it will be taking over 2hrs to complete.
HG has the world's second-worst task time estimator though -- it's been
waffling between 10 to 30 mins for the past hour or more (on the "files"
step).

Overall that's _STUNNINGLY SLOW_ compared to a "git clone" of the same
NetBSD source tree -- especially since I've eliminated the network for
the HG test case!

I'll have to try an up-to-date "git clone" again to be compareing more
apples-to-apples, but IIRC the "git clone" of the src tree works at
least an order of magnitude faster on the same platform, and direct from
the network.

Perhaps this slowness is because even the initial clone attempt is/was
working from the one big complete bundle-format file?  Does HG have any
more efficient way to supply a clone?

And also, why does the network clone fail, but a fetch+unbundle work?

--
					Greg A. Woods <gwoods%acm.org@localhost>

Kelowna, BC     +1 250 762-7675           RoboHack <woods%robohack.ca@localhost>
Planix, Inc. <woods%planix.com@localhost>     Avoncote Farms <woods%avoncote.ca@localhost>

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