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[Xen-devel] 25% cpu usage during idle



A new pvops kernel (78b55f90e72348e231092dbe3e50ac7414b9e1af) needs around 25%
cpu while being idle with 32 guest domains in event and ksoftirq kernel
threads:

| root         4  3.6  0.0      0     0 ?        S    21:08   0:26 [ksoftirqd/0]
| root         7  8.6  0.0      0     0 ?        S    21:08   1:03 [ksoftirqd/1]
| root        10  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/2]
| root        13  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/3]
| root        16  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/4]
| root        19  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/5]
| root        22  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/6]
| root        25  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/7]
| root        28  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/8]
| root        31  0.0  0.0      0     0 ?        S    21:08   0:00 [ksoftirqd/9]
| root        34  0.0  0.0      0     0 ?        S    21:08   0:00 
[ksoftirqd/10]
| root        37  0.0  0.0      0     0 ?        S    21:08   0:00 
[ksoftirqd/11]
| root        39  1.3  0.0      0     0 ?        S    21:08   0:09 [events/0]
| root        40 14.0  0.0      0     0 ?        S    21:08   1:44 [events/1]
| root        41  0.0  0.0      0     0 ?        S    21:08   0:00 [events/2]
| root        42  0.0  0.0      0     0 ?        S    21:08   0:00 [events/3]
| root        43  0.1  0.0      0     0 ?        S    21:08   0:00 [events/4]
| root        44  0.0  0.0      0     0 ?        S    21:08   0:00 [events/5]
| root        45  0.0  0.0      0     0 ?        S    21:08   0:00 [events/6]
| root        46  0.0  0.0      0     0 ?        S    21:08   0:00 [events/7]
| root        47  0.0  0.0      0     0 ?        S    21:08   0:00 [events/8]
| root        48  0.0  0.0      0     0 ?        S    21:08   0:00 [events/9]
| root        49  0.0  0.0      0     0 ?        S    21:08   0:00 [events/10]
| root        50  0.0  0.0      0     0 ?        S    21:08   0:00 [events/11]

Bastian

-- 
Change is the essential process of all existence.
                -- Spock, "Let That Be Your Last Battlefield", stardate 5730.2

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