I did an update of all of our OBS build workers from openSUSE 13.2 to 42.1 last
week and I am currently debugging some speed regressions.
I am not sure if this is related, but I stumbled over these "vmwrite error"
lines in many of our cloud build hosts. They seem to be new. Can they be the
root of perfomance problems?
[143736.906151] vmwrite error: reg 6800 value 0 (err 0)
[143736.911902] CPU: 2 PID: 7312 Comm: qemu-system-x86 Tainted: G I
4.1.20-11-default #1
[143736.922305] Hardware name: FUJITSU PRIMERGY CX120 S1/D3052, BIOS
S5500.86B.01.00.0054.092820101104 09/28/2010
[143736.933869] 0000000000000286 0000000000000000 ffffffff8165e6ef
0000000000000000
[143736.942666] ffff8803a87f0600 0000000000000000 ffffffffa08adda4
000000000000ae41
[143736.951460] ffff8803a87f0600 0000000000000000 ffffffffa043c15e
ffff88014eeea510
[143736.960241] Call Trace:
[143736.963272] [<ffffffff810055cc>] dump_trace+0x8c/0x340
[143736.969411] [<ffffffff8100597c>] show_stack_log_lvl+0xfc/0x1a0
[143736.976329] [<ffffffff81006ed1>] show_stack+0x21/0x50
[143736.982374] [<ffffffff8165e6ef>] dump_stack+0x5d/0x79
[143736.988421] [<ffffffffa08adda4>] vmx_fpu_activate.part.66+0x44/0xb0
[kvm_intel]
[143736.997197] [<ffffffffa043c15e>] kvm_arch_vcpu_create+0x4e/0x70 [kvm]
[143737.004817] [<ffffffffa04276c1>] kvm_vm_ioctl+0x1c1/0x750 [kvm]
[143737.011834] [<ffffffff811f218f>] do_vfs_ioctl+0x2ff/0x510
[143737.018263] [<ffffffff811f2421>] SyS_ioctl+0x81/0xa0
[143737.024196] [<ffffffff81664f32>] system_call_fastpath+0x16/0x75
[143737.031216] [<00007fbd32030b87>] 0x7fbd32030b87
[143737.036927] vmwrite error: reg 4004 value 60042 (err 0)
[143737.043065] CPU: 2 PID: 7312 Comm: qemu-system-x86 Tainted: G I
4.1.20-11-default #1
[143737.053448] Hardware name: FUJITSU PRIMERGY CX120 S1/D3052, BIOS
S5500.86B.01.00.0054.092820101104 09/28/2010
[143737.064997] 0000000000000286 0000000000000000 ffffffff8165e6ef
0000000000000000
[143737.064998] ffff8803a87f0600 0000000000000000 ffffffffa08addac
000000000000ae41
[143737.065000] ffff8803a87f0600 0000000000000000 ffffffffa043c15e
ffff88014eeea510
[143737.065000] Call Trace:
[143737.065013] [<ffffffff810055cc>] dump_trace+0x8c/0x340
[143737.065016] [<ffffffff8100597c>] show_stack_log_lvl+0xfc/0x1a0
[143737.065019] [<ffffffff81006ed1>] show_stack+0x21/0x50
[143737.065024] [<ffffffff8165e6ef>] dump_stack+0x5d/0x79
[143737.065034] [<ffffffffa08addac>] vmx_fpu_activate.part.66+0x4c/0xb0
[kvm_intel]
[143737.065067] [<ffffffffa043c15e>] kvm_arch_vcpu_create+0x4e/0x70 [kvm]
[143737.065077] [<ffffffffa04276c1>] kvm_vm_ioctl+0x1c1/0x750 [kvm]
[143737.065083] [<ffffffff811f218f>] do_vfs_ioctl+0x2ff/0x510
[143737.065091] [<ffffffff811f2421>] SyS_ioctl+0x81/0xa0
[143737.065096] [<ffffffff81664f32>] system_call_fastpath+0x16/0x75
[143737.065105] [<00007fbd32030b87>] 0x7fbd32030b87
[143737.065120] vmwrite error: reg 6000 value fffffffffffffff7 (err 0)
[143737.065122] CPU: 2 PID: 7312 Comm: qemu-system-x86 Tainted: G I
4.1.20-11-default #1