Mercurial > hg
comparison mercurial/configitems.py @ 40786:74a9f428227e
mmapindex: set default to 1MB
mmapping index is more efficient if we only need a small part of it.
The 1MB value has been picked arbitrarily, a lower value might be better.
On a large repository with a 60MB index, we see the following performance
gain:
hg perfindex
before: ! wall 0.032023 comb 0.040000 user 0.000000 sys 0.040000 (best of 100)
after: ! wall 0.000196 comb 0.000000 user 0.000000 sys 0.000000 (best of 1060)
The speed boost benefit all cases, including the one where the full index
needs to be parsed.
hg perfindex --rev 0
before: ! wall 0.040673 comb 0.030000 user 0.000000 sys 0.030000 (best of 100)
after ! wall 0.010713 comb 0.020000 user 0.010000 sys 0.010000 (best of 212)
This gain reflect in higher level operation:
hg perfbookmarks --clear-revlogs
before: ! wall 0.161339 comb 0.160000 user 0.130000 sys 0.030000 (best of 56)
after: ! wall 0.123228 comb 0.120000 user 0.120000 sys 0.000000 (best of 68)
author | Boris Feld <boris.feld@octobus.net> |
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date | Fri, 23 Nov 2018 06:09:44 +0100 |
parents | 875d2af8cb4e |
children | d23fd01cc115 |
comparison
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40785:875d2af8cb4e | 40786:74a9f428227e |
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974 ) | 974 ) |
975 coreconfigitem('push', 'pushvars.server', | 975 coreconfigitem('push', 'pushvars.server', |
976 default=False, | 976 default=False, |
977 ) | 977 ) |
978 coreconfigitem('storage', 'mmap-threshold', | 978 coreconfigitem('storage', 'mmap-threshold', |
979 default=None, | 979 default='1MB', |
980 alias=[('experimental', 'mmapindexthreshold')], | 980 alias=[('experimental', 'mmapindexthreshold')], |
981 ) | 981 ) |
982 coreconfigitem('storage', 'new-repo-backend', | 982 coreconfigitem('storage', 'new-repo-backend', |
983 default='revlogv1', | 983 default='revlogv1', |
984 ) | 984 ) |