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b_enable
2008 Dec 17
4
[Patch 0 of 2]: PV-domain SMP performance
...4.06 user: 0.74 sys: 58.88
2 runs: real: 999.77 user: 1.27 sys: 98.61
4 runs: real: 1251.00 user: 16.58 sys: 291.66
This result was achieved by avoiding descheduling of a vcpu only when irqs
are blocked. Even better results might be possible with some fine tuning
(e.g. instrumenting bh_enable/bh_disable).
I think system time has dropped remarkably!
Patch 1 is hypervisor support
Patch 2 is my Linux support in irq_enable and irq_disable
Juergen
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Juergen Gross Principal Developer
IP SW OS6 Telephone: +49 (0) 89 636 47950
Fujitsu Sieme...