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Re: [Xen-ia64-devel] SEDF scheduler

from [Masaki Kanno]

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To:	Tristan Gingold <Tristan.Gingold@xxxxxxxx>
Subject:	Re: [Xen-ia64-devel] SEDF scheduler
From:	Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
Date:	Thu, 02 Mar 2006 23:47:17 +0900
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Hi Trisran,

The SEDF scheduler bugs are only xen/ia64.
To be precise, the SEDF scheduler source codes does not include bugs.
Because there are not the following functions, action of the SEDF 
scheduler becomes inaccuracy.

 - xen/ia64
  -- __HYPERVISOR_sched_op / do_sched_op()
  -- __HYPERVISOR_set_timer_op / do_set_timer_op()
 - kernel/dom0 & domU
  -- xen_idle() / EXPORT_SYMBOL(default_idle)
  -- stop_hz_timer()
  -- start_hz_timer()

Best regards,
 Kan

Tristan Gingold wrote:
>Le Jeudi 02 Mars 2006 14:08, Masaki Kanno a 馗rit :
>> Hi Tristan,
>>
>> Fujitsu team is testing Xen with the SEDF scheduler.
>> However, the SEDF scheduler has bugs. Fujitsu team is trying a bug-fix.
>Is it that bugged ?  I think SEDF is the default scheduler on x86.
>
>Tristan.
>
>


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