的mod_wsgi daemon模式，WSGIApplicationGroup和Python间preTER分离 [英] mod_wsgi daemon mode, WSGIApplicationGroup and Python interpreter separation

问题描述

我的Apache 2个虚拟主机，每一个都具有Django的网站使用的mod_wsgi，守护进程模式，这样附：

I have Apache with 2 virtual hosts, each having a Django site attached using mod_wsgi, daemon mode, like this:

<VirtualHost 123.123.123.123:80>
    WSGIDaemonProcess a.com user=x group=x processes=5 threads=1
    WSGIProcessGroup a.com
    WSGIApplicationGroup %{GLOBAL}
</VirtualHost>

<VirtualHost 123.123.123.123:80>
    WSGIDaemonProcess b.com user=x group=x processes=5 threads=1
    WSGIProcessGroup b.com
    WSGIApplicationGroup %{GLOBAL}
</VirtualHost>

我用 WSGIApplicationGroup％{GLOBAL} 的一个已知的问题的Xapian 。

现在，如果我明白这是怎么回事幕后，mod_wsgi的推出我的每个站点5守护进程。我可以在Apache日志看到这一点：

Now, if I understand what's going on behind the scenes, mod_wsgi launches 5 daemon processes for each of my sites. I can see this in Apache log:

[info] mod_wsgi (pid=8106): Attach interpreter ''.
[info] mod_wsgi (pid=8106): Adding '.../lib/python2.5/site-packages' to path.
[info] mod_wsgi (pid=8106): Enable monitor thread in process 'a.com'.
[info] mod_wsgi (pid=8106): Enable deadlock thread in process 'a.com'.

[info] mod_wsgi (pid=8107): Attach interpreter ''.
[info] mod_wsgi (pid=8107): Adding '.../lib/python2.5/site-packages' to path.
[info] mod_wsgi (pid=8107): Enable monitor thread in process 'a.com'.
[info] mod_wsgi (pid=8107): Enable deadlock thread in process 'a.com'.

...

我不明白的是，如果这些附加间preTER''行表示，所有这些过程都有着相同的Python间preTER，或者如果有每个进程一个跨preTER。 （顺便说一句我意识到空间preTER名称''是通过传递％{GLOBAL} 到 WSGIApplicationGroup ）。

What I don't understand is if those "Attach interpreter ''" lines indicate that all of those processes share the same Python interpreter, or if there is one interpreter per process. (BTW I realize that the empty interpreter name '' is caused by passing %{GLOBAL} to WSGIApplicationGroup).

我想检查是否也许的sys.path 项累积在随后的进程，但他们并没有 - 这可能表明有一个单独的Python间preTER每5个守护进程的......但我不太懂这些东西，所以我问在这里。

I tried checking if maybe sys.path entries cumulated in subsequent processes, but they didn't - which could indicate that there's a separate Python interpreter for each of the 5 daemon processes... but I don't quite understand all these things so I'm asking here.

推荐答案

在'PID的价值是不同的。它们是在不同的过程。

The 'pid' value is different. They are in different processes.

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