obsolete: order of magnitude speedup in _computebumpedset
Reminder: a changeset is said "bumped" if it tries to obsolete a immutable
changeset.
The previous algorithm for computing bumped changeset was:
1) Get all public changesets
2) Find all they successors
3) Search for stuff that are eligible for being "bumped"
(mutable and non obsolete)
The entry size of this algorithm is `O(len(public))` which is mostly the same as
`O(len(repo))`. Even this this approach mean fewer obsolescence marker are
traveled, this is not very scalable.
The new algorithm is:
1) For each potential bumped changesets (non obsolete mutable)
2) iterate over precursors
3) if a precursors is public. changeset is bumped
We travel more obsolescence marker, but the entry size is much smaller since
the amount of potential bumped should remains mostly stable with time `O(1)`.
On some confidential gigantic repo this move bumped computation from 15.19s to
0.46s (×33 speedup…). On "smaller" repo (mercurial, cubicweb's review) no
significant gain were seen. The additional traversal of obsolescence marker is
probably probably counter balance the advantage of it.
Other optimisation could be done in the future (eg: sharing precursors cache
for divergence detection)
from mercurial import store
def show(s):
# show test input
print "A = '%s'" % s.encode("string_escape")
# show the result of the C implementation, if available
h = store._pathencode(s)
print "B = '%s'" % h.encode("string_escape")
# compare it with reference implementation in Python
r = store._hybridencode(s, True)
if h != r:
print "R = '%s'" % r.encode("string_escape")
print
show("data/abcdefghijklmnopqrstuvwxyz0123456789 !#%&'()+,-.;=[]^`{}")
print "uppercase char X is encoded as _x"
show("data/ABCDEFGHIJKLMNOPQRSTUVWXYZ")
print "underbar is doubled"
show("data/_")
print "tilde is character-encoded"
show("data/~")
print "characters in ASCII code range 1..31"
show('data/\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f'
'\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f')
print "characters in ASCII code range 126..255"
show('data/\x7e\x7f'
'\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f'
'\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f')
show('data/\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf'
'\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf')
show('data/\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf'
'\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf')
show('data/\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef'
'\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff')
print "Windows reserved characters"
show('data/less <, greater >, colon :, double-quote ", backslash \\'
', pipe |, question-mark ?, asterisk *')
print "encoding directories ending in .hg, .i or .d with '.hg' suffix"
show('data/x.h.i/x.hg/x.i/x.d/foo')
show('data/a.hg/a.i/a.d/foo')
show('data/au.hg/au.i/au.d/foo')
show('data/aux.hg/aux.i/aux.d/foo')
show('data/auxy.hg/auxy.i/auxy.d/foo')
print "but these are not encoded on *filenames*"
show('data/foo/x.hg')
show('data/foo/x.i')
show('data/foo/x.d')
show('data/foo/a.hg')
show('data/foo/a.i')
show('data/foo/a.d')
show('data/foo/au.hg')
show('data/foo/au.i')
show('data/foo/au.d')
show('data/foo/aux.hg')
show('data/foo/aux.i')
show('data/foo/aux.d')
show('data/foo/auxy.hg')
show('data/foo/auxy.i')
show('data/foo/auxy.d')
print "plain .hg, .i and .d directories have the leading dot encoded"
show('data/.hg/.i/.d/foo')
show('data/aux.bla/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c.i')
show('data/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/'
'TENTH/ELEVENTH/LOREMIPSUM.TXT.i')
show('data/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/'
'wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules'
'.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider.i')
show('data/AUX.THE-QUICK-BROWN-FOX-JU:MPS-OVER-THE-LAZY-DOG-THE-QUICK-'
'BROWN-FOX-JUMPS-OVER-THE-LAZY-DOG.TXT.i')
show('data/Project Planning/Resources/AnotherLongDirectoryName/'
'Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt')
show('data/Project.Planning/Resources/AnotherLongDirectoryName/'
'Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt')
show('data/foo.../foo / /a./_. /__/.x../ bla/.FOO/something.i')
show('data/c/co/com/com0/com1/com2/com3/com4/com5/com6/com7/com8/com9')
show('data/C/CO/COM/COM0/COM1/COM2/COM3/COM4/COM5/COM6/COM7/COM8/COM9')
show('data/c.x/co.x/com.x/com0.x/com1.x/com2.x/com3.x/com4.x/com5.x'
'/com6.x/com7.x/com8.x/com9.x')
show('data/x.c/x.co/x.com0/x.com1/x.com2/x.com3/x.com4/x.com5'
'/x.com6/x.com7/x.com8/x.com9')
show('data/cx/cox/comx/com0x/com1x/com2x/com3x/com4x/com5x'
'/com6x/com7x/com8x/com9x')
show('data/xc/xco/xcom0/xcom1/xcom2/xcom3/xcom4/xcom5'
'/xcom6/xcom7/xcom8/xcom9')
show('data/l/lp/lpt/lpt0/lpt1/lpt2/lpt3/lpt4/lpt5/lpt6/lpt7/lpt8/lpt9')
show('data/L/LP/LPT/LPT0/LPT1/LPT2/LPT3/LPT4/LPT5/LPT6/LPT7/LPT8/LPT9')
show('data/l.x/lp.x/lpt.x/lpt0.x/lpt1.x/lpt2.x/lpt3.x/lpt4.x/lpt5.x'
'/lpt6.x/lpt7.x/lpt8.x/lpt9.x')
show('data/x.l/x.lp/x.lpt/x.lpt0/x.lpt1/x.lpt2/x.lpt3/x.lpt4/x.lpt5'
'/x.lpt6/x.lpt7/x.lpt8/x.lpt9')
show('data/lx/lpx/lptx/lpt0x/lpt1x/lpt2x/lpt3x/lpt4x/lpt5x'
'/lpt6x/lpt7x/lpt8x/lpt9x')
show('data/xl/xlp/xlpt/xlpt0/xlpt1/xlpt2/xlpt3/xlpt4/xlpt5'
'/xlpt6/xlpt7/xlpt8/xlpt9')
show('data/con/p/pr/prn/a/au/aux/n/nu/nul')
show('data/CON/P/PR/PRN/A/AU/AUX/N/NU/NUL')
show('data/con.x/p.x/pr.x/prn.x/a.x/au.x/aux.x/n.x/nu.x/nul.x')
show('data/x.con/x.p/x.pr/x.prn/x.a/x.au/x.aux/x.n/x.nu/x.nul')
show('data/conx/px/prx/prnx/ax/aux/auxx/nx/nux/nulx')
show('data/xcon/xp/xpr/xprn/xa/xau/xaux/xn/xnu/xnul')
show('data/a./au./aux./auxy./aux.')
show('data/c./co./con./cony./con.')
show('data/p./pr./prn./prny./prn.')
show('data/n./nu./nul./nuly./nul.')
show('data/l./lp./lpt./lpt1./lpt1y./lpt1.')
show('data/lpt9./lpt9y./lpt9.')
show('data/com./com1./com1y./com1.')
show('data/com9./com9y./com9.')
show('data/a /au /aux /auxy /aux ')
print "largest unhashed path"
show('data/123456789-123456789-123456789-123456789-123456789-'
'unhashed--xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "shortest hashed path"
show('data/123456789-123456789-123456789-123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "changing one char in part that's hashed away produces a different hash"
show('data/123456789-123456789-123456789-123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxy-'
'123456789-123456')
print "uppercase hitting length limit due to encoding"
show('data/A23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/Z23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "compare with lowercase not hitting limit"
show('data/a23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/z23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "not hitting limit with any of these"
show("data/abcdefghijklmnopqrstuvwxyz0123456789 !#%&'()+,-.;="
"[]^`{}xxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-"
"123456789-12345")
print "underbar hitting length limit due to encoding"
show('data/_23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "tilde hitting length limit due to encoding"
show('data/~23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "Windows reserved characters hitting length limit"
show('data/<23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/>23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/:23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/"23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/\\23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/|23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/?23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/*23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "initial space hitting length limit"
show('data/ 23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "initial dot hitting length limit"
show('data/.23456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "trailing space in filename hitting length limit"
show('data/123456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-1234 ')
print "trailing dot in filename hitting length limit"
show('data/123456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-1234.')
print "initial space in directory hitting length limit"
show('data/ x/456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "initial dot in directory hitting length limit"
show('data/.x/456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "trailing space in directory hitting length limit"
show('data/x /456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "trailing dot in directory hitting length limit"
show('data/x./456789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "with directories that need direncoding, hitting length limit"
show('data/x.i/56789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/x.d/56789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/x.hg/5789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "Windows reserved filenames, hitting length limit"
show('data/con/56789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/prn/56789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/aux/56789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/nul/56789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/com1/6789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/com9/6789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/lpt1/6789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
show('data/lpt9/6789-123456789-123456789-123456789-123456789-'
'xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "non-reserved names, just not hitting limit"
show('data/123456789-123456789-123456789-123456789-123456789-'
'/com/com0/lpt/lpt0/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12345')
print "hashed path with largest untruncated 1st dir"
show('data/12345678/-123456789-123456789-123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated 1st dir"
show('data/123456789/123456789-123456789-123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest untruncated two dirs"
show('data/12345678/12345678/9-123456789-123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated two dirs"
show('data/123456789/123456789/123456789-123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest untruncated three dirs"
show('data/12345678/12345678/12345678/89-123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated three dirs"
show('data/123456789/123456789/123456789/123456789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest untruncated four dirs"
show('data/12345678/12345678/12345678/12345678/789-123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated four dirs"
show('data/123456789/123456789/123456789/123456789/123456789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest untruncated five dirs"
show('data/12345678/12345678/12345678/12345678/12345678/6789-'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated five dirs"
show('data/123456789/123456789/123456789/123456789/123456789/'
'hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest untruncated six dirs"
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/ed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated six dirs"
show('data/123456789/123456789/123456789/123456789/123456789/'
'123456789/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest untruncated seven dirs"
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/xxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated seven dirs"
show('data/123456789/123456789/123456789/123456789/123456789/'
'123456789/123456789/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest untruncated eight dirs"
print "(directory 8 is dropped because it hits _maxshortdirslen)"
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345678/xxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with smallest truncated eight dirs"
print "(directory 8 is dropped because it hits _maxshortdirslen)"
show('data/123456789/123456789/123456789/123456789/123456789/'
'123456789/123456789/123456789/xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with largest non-dropped directory 8"
print "(just not hitting the _maxshortdirslen boundary)"
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "...adding one truncated char to dir 1..7 won't drop dir 8"
show('data/12345678x/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678x/12345678/12345678/12345678/12345'
'678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678/12345678x/12345678/12345678/12345'
'678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678/12345678/12345678x/12345678/12345'
'678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678/12345678/12345678/12345678x/12345'
'678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678x/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678x/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path with shortest dropped directory 8"
print "(just hitting the _maxshortdirslen boundary)"
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/123456/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "hashed path that drops dir 8 due to dot or space at end is"
print "encoded, and thus causing to hit _maxshortdirslen"
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/1234./-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/1234 /-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print "... with dir 8 short enough for encoding"
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12./xx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12 /xx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-123456')
print '''Extensions are replicated on hashed paths. Note that
we only get to encode files that end in .i or .d inside the
store. Encoded filenames are thus bound in length.'''
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.345.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.345.d')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.34567.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.345678.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789-.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789-1.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789-12.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789-123.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789-1234.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789-12345.i')
show('data/12345678/12345678/12345678/12345678/12345678/12345'
'678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-'
'123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWX'
'YZ-abcdefghjiklmnopqrstuvwxyz-ABCDEFGHIJKLMNOPRSTU'
'VWXYZ-1234567890-xxxxxxxxx-xxxxxxxxx-xxxxxxxx-xxxx'
'xxxxx-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwww'
'wwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww.i')