For legacy systems such as SAFTE hotswap, polling through sg at 10 msec
intervals would be extremely painful because of all the context
switches. A timer scheduled every 10 msec to send out a SCSI message
and handle a response if there is a hotswap event is a much better course.
Thanks
-steve
Greg KH wrote:
>On Tue, Oct 15, 2002 at 12:28:59PM -0700, Steven Dake wrote:
>
>
>>Safte polling in the kernel isn't inherently bad and could be tied into
>>the hotplug mechanism.
>>
>>Making SAFTE hotswap available via SG would also work but system
>>performance would be bad at small poll intervals (like 100 msec).
>>
>>
>
>Is there a real nead to get hotplug notification any faster than that?
>
>And yes, it should all be done in userspace, whenever possible :)
>
>thanks,
>
>greg k-h
>
>
>
>
>
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