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comparison mercurial/debugcommands.py @ 35678:43154a76f392

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debugdeltachain: display how many chunks would be read in sparse-read mode
author Paul Morelle <paul.morelle@octobus.net>
date Mon, 16 Oct 2017 14:32:06 +0200
parents 35fb3367f72d
children 22a877215ea1
comparison
equal deleted inserted replaced
35677:cf2e2a7399bc 35678:43154a76f392
598 598
599 :``readsize``: total size of data read from the disk for a revision 599 :``readsize``: total size of data read from the disk for a revision
600 (sum of the sizes of all the blocks) 600 (sum of the sizes of all the blocks)
601 :``largestblock``: size of the largest block of data read from the disk 601 :``largestblock``: size of the largest block of data read from the disk
602 :``readdensity``: density of useful bytes in the data read from the disk 602 :``readdensity``: density of useful bytes in the data read from the disk
603 :``srchunks``: in how many data hunks the whole revision would be read
603 604
604 The sparse read can be enabled with experimental.sparse-read = True 605 The sparse read can be enabled with experimental.sparse-read = True
605 """ 606 """
606 opts = pycompat.byteskwargs(opts) 607 opts = pycompat.byteskwargs(opts)
607 r = cmdutil.openrevlog(repo, 'debugdeltachain', file_, opts) 608 r = cmdutil.openrevlog(repo, 'debugdeltachain', file_, opts)
643 644
644 fm.plain(' rev chain# chainlen prev delta ' 645 fm.plain(' rev chain# chainlen prev delta '
645 'size rawsize chainsize ratio lindist extradist ' 646 'size rawsize chainsize ratio lindist extradist '
646 'extraratio') 647 'extraratio')
647 if withsparseread: 648 if withsparseread:
648 fm.plain(' readsize largestblk rddensity') 649 fm.plain(' readsize largestblk rddensity srchunks')
649 fm.plain('\n') 650 fm.plain('\n')
650 651
651 chainbases = {} 652 chainbases = {}
652 for rev in r: 653 for rev in r:
653 comp, uncomp, deltatype, chain, chainsize = revinfo(rev) 654 comp, uncomp, deltatype, chain, chainsize = revinfo(rev)
691 if largestblock < blksize: 692 if largestblock < blksize:
692 largestblock = blksize 693 largestblock = blksize
693 694
694 readdensity = float(chainsize) / float(readsize) 695 readdensity = float(chainsize) / float(readsize)
695 696
696 fm.write('readsize largestblock readdensity', 697 if util.safehasattr(revlog, '_slicechunk'):
697 ' %10d %10d %9.5f', 698 revchunks = tuple(revlog._slicechunk(r, chain))
698 readsize, largestblock, readdensity, 699 else:
700 revchunks = (chain,)
701 srchunks = len(revchunks)
702
703 fm.write('readsize largestblock readdensity srchunks',
704 ' %10d %10d %9.5f %8d',
705 readsize, largestblock, readdensity, srchunks,
699 readsize=readsize, largestblock=largestblock, 706 readsize=readsize, largestblock=largestblock,
700 readdensity=readdensity) 707 readdensity=readdensity, srchunks=srchunks)
701 708
702 fm.plain('\n') 709 fm.plain('\n')
703 710
704 fm.end() 711 fm.end()
705 712