--- a/mercurial/revlog.py Tue Oct 10 17:50:27 2017 +0200
+++ b/mercurial/revlog.py Sat Oct 14 17:05:41 2017 +0200
@@ -180,7 +180,7 @@
endbyte = start(revs[-1]) + length(revs[-1])
deltachainspan = endbyte - startbyte
- if len(revs) <= 1:
+ if deltachainspan <= revlog._srminblocksize or len(revs) <= 1:
yield revs
continue
@@ -360,6 +360,7 @@
self._maxdeltachainspan = -1
self._withsparseread = False
self._srdensitythreshold = 0.25
+ self._srminblocksize = 262144
mmapindexthreshold = None
v = REVLOG_DEFAULT_VERSION
@@ -389,6 +390,8 @@
self._withsparseread = bool(opts.get('with-sparse-read', False))
if 'sparse-read-density-threshold' in opts:
self._srdensitythreshold = opts['sparse-read-density-threshold']
+ if 'sparse-read-min-block-size' in opts:
+ self._srminblocksize = opts['sparse-read-min-block-size']
if self._chunkcachesize <= 0:
raise RevlogError(_('revlog chunk cache size %r is not greater '