Message86840
uuid.uuid1() currently uses two different ways to generate a uuid. If
the system call "uuid_generate_time" is available, uuid1() uses the
system call via the ctypes interface, otherwise, it uses pure Python
code to generate a uuid. The problem is, the C interface
"uuid_generate_time" is even slower than the Python code. The ctypes
interface is too slow. According to my test, it took 55 microseconds to
generate a uuid via ctypes interface but only 45 microseconds via the
Python code. I also tried to test the performance of the
"uuid_generate_time" C API itself. It takes C code 12 microseconds. Most
of the time were wasted on ctypes. I believe we need to drop ctypes and
write a Python extensions in C for this job. |
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Date |
User |
Action |
Args |
2009-04-30 10:13:36 | wangchun | set | recipients:
+ wangchun |
2009-04-30 10:13:36 | wangchun | set | messageid: <1241086416.5.0.850110966894.issue5885@psf.upfronthosting.co.za> |
2009-04-30 10:13:35 | wangchun | link | issue5885 messages |
2009-04-30 10:13:34 | wangchun | create | |
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