Date: Fri, 13 Nov 2015 08:08:10 +0000 From: Mark Blackman <mark@exonetric.com> To: Alfred Perlstein <alfred@freebsd.org> Cc: Vladimir Bogrecov <bogrecov@gmail.com>, python@freebsd.org, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: Python on FreeBSD is slower than on Linux Message-ID: <5FA6299E-962D-4F4B-B4AB-B2BEF1E3915B@exonetric.com> In-Reply-To: <5644E9F0.40805@freebsd.org> References: <CANx%2B6QKT00ZC4Gh3UHp7qW6mtKJHLn_NkMD1gegTYgiu=gByXg@mail.gmail.com> <5644E9F0.40805@freebsd.org>
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On 12 Nov 2015, at 19:35, Alfred Perlstein <alfred@freebsd.org> wrote: > > I'm adding Freebsd-virtualization to this thread as both problems point to some possible issue with FreeBSD as a guest. (although a bare metal comparison should likely be done as well). > > -Alfred > >> On 11/12/15 11:26 AM, Vladimir Bogrecov wrote: >> Hello, >> >> I'm developing a little project on Python 3.5. The server's operating >> system is FreeBSD 10.2. Today I decided to do a little test "just for fun" >> and the result has confused me. I ran the following code >> >> import random >> import time >> >> >> def test_sort(size): >> sequence = [i for i in range(0, size)] >> random.shuffle(sequence) >> start = time.time() >> ordered_sequence = sorted(sequence) >> print(time.time() - start) >> >> >> if __name__ == '__main__': >> test_sort(1000000) >> >> on FreeBSD 10.2 x64 and on Debian 8 x64. Both computers was the smallest >> (5$ per month) virtual machines on the Digital Ocean ( >> https://www.digitalocean.com). The average result on the FreeBSD was 1.5 >> sec, on the Debian 1.0 sec. Both machines was created specially for test >> and had not any customization. Could you help me to understand why python >> is so slower on FreeBSD and may be there are some steps I can perform to >> speed up the python to work not slower than on Debian. >> >> I have found in Google the similar question: >> https://lists.freebsd.org/pipermail/freebsd-python/2012-June/004306.html so >> it has an interest not only for me. >> >> P.S. I really like FreeBSD and I would be happy to solve this issue. If you >> will have an interest to this issue I can provide SSH access for both >> machines :) >> >> Thank You! I have some memory that the gettimeofday is quite expensive on FreeBSD as a result of substantially more accuracy and I reckon that test script is calling it about 2 million times. Mark
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