mirrors/legendary
1
0
Fork 0
mirror of https://github.com/derrod/legendary.git synced 2025-01-03 04:45:28 +00:00
Code Issues Projects Releases Wiki Activity

[downloader] Improve reordering optimizations

Browse source 
With some titles such as Metro Exodus there is
even more duplication across files. While this
change does not manage to reduce the limit to
below the default 1 GiB limit, it does bring
it down by about 512 MiB.
This commit is contained in:
derrod 2020-05-05 16:23:51 +02:00
parent 67859fb4ac
commit b1ba25e2e0
1 changed files with 18 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
legendary/downloader/manager.py
View file

@ -189,7 +189,7 @@ class DLManager(Process):
if processing_optimization:
# reorder the file manifest list to group files that share many chunks
# 5 is mostly arbitrary but has shown in testing to be a good choice
min_overlap = 5
min_overlap = 4
# enumerate the file list to try and find a "partner" for
# each file that shares the most chunks with it.
partners = dict()
@ -197,13 +197,17 @@ class DLManager(Process):
for num, filename in enumerate(filenames[:int((len(filenames) + 1) / 2)]):
chunks = file_to_chunks[filename]
max_overlap = min_overlap
partnerlist = list()
for other_file in filenames[num + 1:]:
overlap = len(chunks & file_to_chunks[other_file])
if overlap > max_overlap:
partners[filename] = other_file
max_overlap = overlap
if overlap > min_overlap:
partnerlist.append(other_file)
if not partnerlist:
continue
partners[filename] = partnerlist
# iterate over all the files again and this time around
_fmlist = []
@ -214,8 +218,12 @@ class DLManager(Process):
_fmlist.append(fm)
processed.add(fm.filename)
# try to find the file's "partner"
partner = partners.get(fm.filename, None)
if not partner or partner in processed:
f_partners = partners.get(fm.filename, None)
if not f_partners:
continue
# add each partner to list at this point
for partner in f_partners:
if partner in processed:
continue
partner_fm = manifest.file_manifest_list.get_file_by_path(partner)