tags-cache: skip the filternode step if we are not going to use it
When warming the hgtagsfnodescache, we don't need the actual result, so we can
simply skip the part that "filter" fnode we read from the cache. So provide a
quite visible speed up to the top level `hg debugupdatecache` function.
### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
# benchmark.name = hg.debug.debug-update-cache
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.pre-state = warm
before: 19.947581
after: 18.916804 (-5.17%, -1.03)
import os
from mercurial.hgweb import hgwebdir_mod
hgwebdir = hgwebdir_mod.hgwebdir
os.mkdir(b'webdir')
os.chdir(b'webdir')
webdir = os.path.realpath(b'.')
def trivial_response(req, res):
return []
def make_hgwebdir(gc_rate=None):
config = os.path.join(webdir, b'hgwebdir.conf')
with open(config, 'wb') as configfile:
configfile.write(b'[experimental]\n')
if gc_rate is not None:
configfile.write(b'web.full-garbage-collection-rate=%d\n' % gc_rate)
hg_wd = hgwebdir(config)
hg_wd._runwsgi = trivial_response
return hg_wd
def process_requests(webdir_instance, number):
# we don't care for now about passing realistic arguments
for _ in range(number):
for chunk in webdir_instance.run_wsgi(None, None):
pass
without_gc = make_hgwebdir(gc_rate=0)
process_requests(without_gc, 5)
assert without_gc.requests_count == 5
assert without_gc.gc_full_collections_done == 0
with_gc = make_hgwebdir(gc_rate=2)
process_requests(with_gc, 5)
assert with_gc.requests_count == 5
assert with_gc.gc_full_collections_done == 2
with_systematic_gc = make_hgwebdir() # default value of the setting
process_requests(with_systematic_gc, 3)
assert with_systematic_gc.requests_count == 3
assert with_systematic_gc.gc_full_collections_done == 3