Scrapy 's Scrapyd слишком медленно с планированием пауков

Я использую Scrapyd и столкнулся со странной проблемой при одновременном запуске 4 пауков.

2012-02-06 15:27:17+0100 [HTTPChannel,0,127.0.0.1] 127.0.0.1 - - [06/Feb/2012:14:27:16 +0000] "POST /schedule.json HTTP/1.1" 200 62 "-" "python-requests/0.10.1"
2012-02-06 15:27:17+0100 [HTTPChannel,1,127.0.0.1] 127.0.0.1 - - [06/Feb/2012:14:27:16 +0000] "POST /schedule.json HTTP/1.1" 200 62 "-" "python-requests/0.10.1"
2012-02-06 15:27:17+0100 [HTTPChannel,2,127.0.0.1] 127.0.0.1 - - [06/Feb/2012:14:27:16 +0000] "POST /schedule.json HTTP/1.1" 200 62 "-" "python-requests/0.10.1"
2012-02-06 15:27:17+0100 [HTTPChannel,3,127.0.0.1] 127.0.0.1 - - [06/Feb/2012:14:27:16 +0000] "POST /schedule.json HTTP/1.1" 200 62 "-" "python-requests/0.10.1"
2012-02-06 15:27:18+0100 [Launcher] Process started: project='thz' spider='spider_1' job='abb6b62650ce11e19123c8bcc8cc6233' pid=2545 
2012-02-06 15:27:19+0100 [Launcher] Process finished: project='thz' spider='spider_1' job='abb6b62650ce11e19123c8bcc8cc6233' pid=2545 
2012-02-06 15:27:23+0100 [Launcher] Process started: project='thz' spider='spider_2' job='abb72f8e50ce11e19123c8bcc8cc6233' pid=2546 
2012-02-06 15:27:24+0100 [Launcher] Process finished: project='thz' spider='spider_2' job='abb72f8e50ce11e19123c8bcc8cc6233' pid=2546 
2012-02-06 15:27:28+0100 [Launcher] Process started: project='thz' spider='spider_3' job='abb76f6250ce11e19123c8bcc8cc6233' pid=2547 
2012-02-06 15:27:29+0100 [Launcher] Process finished: project='thz' spider='spider_3' job='abb76f6250ce11e19123c8bcc8cc6233' pid=2547 
2012-02-06 15:27:33+0100 [Launcher] Process started: project='thz' spider='spider_4' job='abb7bb8e50ce11e19123c8bcc8cc6233' pid=2549 
2012-02-06 15:27:35+0100 [Launcher] Process finished: project='thz' spider='spider_4' job='abb7bb8e50ce11e19123c8bcc8cc6233' pid=2549 

У меня уже есть эти настройки для Scrapyd:

[scrapyd]
max_proc = 10

Почему Scrapyd не запускает пауков одновременно, как только они запланированы?