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[Xen-users] domains > 40 fail to start correctly.


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: joe mcguckin <joe@xxxxxxx>
  • Date: Thu, 25 Jun 2009 12:25:56 -0700
  • Delivery-date: Thu, 25 Jun 2009 12:33:46 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>


I have a dual quad core server with 48G of dram. I notice that everything works fine up to domain #40, but subsequent domains don't start correctly - they consume inordinate amounts of cpu and you can't connect to their console.

It's not the particular domain that's bad - I can kill a domain to get below the 40 threshold and then restart 'netbsd.002' (for example)
and it will run ok.

Any ideas?  This is using netbsd as dom0.

# xm list
Name ID Mem VCPUs State Time(s) Domain-0 0 256 1 r----- 12374.6 dom1 45 256 1 - b---- 99.5 netbsd.000 63 256 1 - b---- 6.2 netbsd.001 113 256 1 r----- 216.5 <<<< BAD netbsd.002 114 256 1 r----- 100.5 <<<< BAD netbsd.012 69 256 1 - b---- 5.4 netbsd.025 65 256 1 - b---- 5.6 netbsd.050 64 256 1 - b---- 6.4 netbsd.060 70 256 1 - b---- 5.7 netbsd.075 66 256 1 - b---- 6.2 netbsd.076 79 256 1 - b---- 2.6 netbsd.077 80 256 1 - b---- 2.9 netbsd.078 81 256 1 - b---- 2.7 netbsd.079 82 256 1 - b---- 2.7 netbsd.080 83 256 1 - b---- 2.6 netbsd.081 84 256 1 - b---- 2.6 netbsd.082 85 256 1 - b---- 2.7 netbsd.083 86 256 1 - b---- 2.9 netbsd.084 87 256 1 - b---- 2.7 netbsd.085 88 256 1 - b---- 2.8 netbsd.086 89 256 1 - b---- 3.2 netbsd.087 90 256 1 - b---- 2.8 netbsd.088 91 256 1 - b---- 2.5 netbsd.089 92 256 1 - b---- 2.5 netbsd.090 93 256 1 - b---- 3.8 netbsd.091 94 256 1 - b---- 2.4 netbsd.092 95 256 1 - b---- 2.2 netbsd.093 96 256 1 - b---- 3.0 netbsd.094 97 256 1 - b---- 2.7 netbsd.095 98 256 1 - b---- 2.2 netbsd.096 99 256 1 - b---- 2.2 netbsd.097 100 256 1 - b---- 3.1 netbsd.100 67 256 1 - b---- 5.2 netbsd.110 68 256 1 - b---- 5.8 netbsd.111 71 256 1 - b---- 4.9 netbsd.112 72 256 1 - b---- 5.8 netbsd.113 73 256 1 - b---- 5.4 netbsd.114 74 256 1 - b---- 6.8 netbsd.115 75 256 1 - b---- 5.0 netbsd.116 76 256 1 - b---- 5.1 netbsd.117 77 256 1 - b---- 5.3 netbsd.118 78 256 1 - b---- 5.3 netbsd.119 62 256 1 - b---- 6.8
#
# xm info
host                   :
release                : 5.0
version : NetBSD 5.0 (XEN3_DOM0) #0: Sun Apr 26 06:40:06 UTC 2009 builds@xxxxxxxxxxxxx:/home/builds/ab/netbsd-5-0- RELEASE/amd64/200904260229Z-obj/home/builds/ab/netbsd-5-0-RELEASE/src/ sys/arch/amd64/compile/XEN3_DOM0
machine                : amd64
nr_cpus                : 8
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2713
hw_caps : 178bf3ff:efd3fbff: 00000000:00000110:00802001:00000000:000037ff:00000000
virt_caps              : hvm
total_memory           : 40959
free_memory            : 29434
node_to_cpu            : node0:0-7
node_to_memory         : node0:29434
xen_major              : 3
xen_minor              : 3
xen_extra              : .1
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler : gcc version 4.1.3 20080704 prerelease (NetBSD nb2 20081120)
cc_compile_by          : joe
cc_compile_domain      :
cc_compile_date        : Sat May 16 16:28:26 PDT 2009
xend_config_format     : 4


Joe




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