Mercurial > hg-stable
view tests/dummyssh @ 42480:66c27df1be84
deltas: skip if projected delta size is bigger than previous snapshot
Before computing any delta, we get a basic estimation of the delta size we can
expect and the resulted compressed value. We then checks this projected size
against the `size(snapshotⁿ) > size(snapshotⁿ⁺¹)` constraint. This allows to
exclude potential base candidates before doing any expensive computation.
This only apply to the intermediate-snapshot case since this constraint only
apply to them.
For some pathological cases of a private repository this step provide a
significant performance boost (timing from `hg perfrevlogwrite`):
before: 14.115908 seconds
after: 3.145906 seconds
author | Valentin Gatien-Baron <vgatien-baron@janestreet.com> |
---|---|
date | Thu, 25 Apr 2019 22:50:33 +0200 |
parents | 3a763d7f40e1 |
children | c102b704edb5 |
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#!/usr/bin/env python from __future__ import absolute_import import os import sys os.chdir(os.getenv('TESTTMP')) if sys.argv[1] != "user@dummy": sys.exit(-1) os.environ["SSH_CLIENT"] = "%s 1 2" % os.environ.get('LOCALIP', '127.0.0.1') log = open("dummylog", "ab") log.write(b"Got arguments") for i, arg in enumerate(sys.argv[1:]): log.write(b" %d:%s" % (i + 1, arg.encode('latin1'))) log.write(b"\n") log.close() hgcmd = sys.argv[2] if os.name == 'nt': # hack to make simple unix single quote quoting work on windows hgcmd = hgcmd.replace("'", '"') r = os.system(hgcmd) sys.exit(bool(r))