Saxon » SaxonC

Here is a pure XPath evaluation also showing a memory leak:

from saxonche import PySaxonProcessor
import psutil

xpath = "random-number-generator(current-dateTime())?permute(1 to 20)"

count = 0
process = psutil.Process()
prev = process.memory_info().rss
print(f"{prev:,}")
print()

with PySaxonProcessor() as proc:

    xpath_processor = proc.new_xpath_processor()

    for _ in range(100):

        xpath_processor.evaluate(xpath)

        if (count := count + 1) % 10 == 0:
            m = process.memory_info().rss
            print(f"{m - prev:,}")
            prev = m

print()
print(f"{prev:,}")

Windows shows

26,116,096

3,866,624
507,904
491,520
499,712
495,616
499,712
495,616
499,712
495,616
499,712

34,467,840

Linux shows

32,849,920

7,581,696
270,336
540,672
540,672
540,672
540,672
540,672
540,672
270,336
540,672

44,756,992