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function to time cover loading

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Kovid Goyal 2010-12-16 13:31:09 -07:00
parent e7e8c340ad
commit 818c4249d2
1 changed files with 21 additions and 1 deletions
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22
src/calibre/library/__init__.py
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@ -8,7 +8,7 @@ def db(path=None):
return LibraryDatabase2(path if path else prefs['library_path'])
def generate_test_db(library_path,
def generate_test_db(library_path, # {{{
num_of_records=20000,
num_of_authors=6000,
num_of_tags=10000,
@ -58,4 +58,24 @@ def generate_test_db(library_path,
t = time.time() - start
print '\nGenerated', num_of_records, 'records in:', t, 'seconds'
print 'Time per record:', t/float(num_of_records)
# }}}
def cover_load_timing(path=None):
from PyQt4.Qt import QApplication, QImage
import os, time
app = QApplication([])
app
d = db(path)
paths = [d.cover(i, index_is_id=True, as_path=True) for i in
d.data.iterallids()]
paths = [p for p in paths if (p and os.path.exists(p) and os.path.isfile(p))]
start = time.time()
for p in paths:
with open(p, 'rb') as f:
img = QImage()
img.loadFromData(f.read())
print 'Average load time:', (time.time() - start)/len(paths), 'seconds'