Mercurial > hg
changeset 33057:03eefca3ed33
debugrevlog: also display the largest delta chain span
Mercurial read all data between the base of the chain and the last delta when
restoring content (including unrelated delta). To monitor this, we add data
about the size of the "delta chain span" to debugrevlog.
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Fri, 23 Jun 2017 01:38:10 +0200 |
| parents | 2312e70cf78b |
| children | 1aa05203f7f6 |
| files | mercurial/debugcommands.py tests/test-debugcommands.t |
| diffstat | 2 files changed, 11 insertions(+), 0 deletions(-) [+] |
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--- a/mercurial/debugcommands.py Sat Jun 24 21:13:48 2017 -0700 +++ b/mercurial/debugcommands.py Fri Jun 23 01:38:10 2017 +0200 @@ -1749,6 +1749,8 @@ nump1prev = 0 nump2prev = 0 chainlengths = [] + chainbases = [] + chainspans = [] datasize = [None, 0, 0] fullsize = [None, 0, 0] @@ -1774,10 +1776,16 @@ size = r.length(rev) if delta == nullrev: chainlengths.append(0) + chainbases.append(r.start(rev)) + chainspans.append(size) numfull += 1 addsize(size, fullsize) else: chainlengths.append(chainlengths[delta] + 1) + baseaddr = chainbases[delta] + revaddr = r.start(rev) + chainbases.append(baseaddr) + chainspans.append((revaddr - baseaddr) + size) addsize(size, deltasize) if delta == rev - 1: numprev += 1 @@ -1823,6 +1831,7 @@ totalsize = fulltotal + deltatotal avgchainlen = sum(chainlengths) / numrevs maxchainlen = max(chainlengths) + maxchainspan = max(chainspans) compratio = 1 if totalsize: compratio = totalrawsize / totalsize @@ -1879,6 +1888,7 @@ fmt = dfmtstr(max(avgchainlen, compratio)) ui.write(('avg chain length : ') + fmt % avgchainlen) ui.write(('max chain length : ') + fmt % maxchainlen) + ui.write(('max chain reach : ') + fmt % maxchainspan) ui.write(('compression ratio : ') + fmt % compratio) if format > 0: