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telnet localhost 6023
>>> est()
Execution engine status

time()-engine.start_time                        : 8.62972998619
len(engine.downloader.active)                   : 16
engine.scraper.is_idle()                        : False
engine.spider.name                              : followall
engine.spider_is_idle()                         : False
engine.slot.closing                             : False
len(engine.slot.inprogress)                     : 16
len(engine.slot.scheduler.dqs or [])            : 0
len(engine.slot.scheduler.mqs)                  : 92
len(engine.scraper.slot.queue)                  : 0
len(engine.scraper.slot.active)                 : 0
engine.scraper.slot.active_size                 : 0
engine.scraper.slot.itemproc_size               : 0
engine.scraper.slot.needs_backout()             : False

telnet localhost 6023
>>> engine.pause()
>>>

telnet localhost 6023
>>> engine.unpause()
>>>

telnet localhost 6023
>>> engine.stop()
Connection closed by foreign host.