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Re: [Xen-users] hvm performance

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] hvm performance
From: Tony Hoyle <tmh@xxxxxxxxxxxx>
Date: Tue, 29 May 2007 00:54:56 +0100
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Tony Hoyle wrote:
Load average of dom0 is 1.03.. but I can't for the life of me see why as the cpu is nearly idle.

Just just spent ages looking for this load and I'm damned if I can find it.

Here's everything I have.. any ideas?

vmstat 1:
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
0  2     84   2856     40  90556    0    0   352   228  281  593  0  0 90  9
1  1     84   3128     40  90196    0    0    56   249  348  683  0  0 89 11
2  1     84   2588     40  90768    0    0   264   576  488 2746  0  0 73 27
0  0     84   3196     40  89888    0    0   300   923  641 1400  0  0 18 82
0  0     84   3084     40  90108    0    0   228   222 2534 3044  1  0 84 15
1  0     84   2908     40  90548    0    0   252   492 1166 1589  0  0 89 11
0  0     84   2760     40  90744    0    0   116   329  397 1285  0  0 97  3
0  1     84   2728     40  90704    0    0   180   126 2103 2403  0  0 85 15
1  0     84   2904     40  90576    0    0   276   452 1452 2482  1  3 60 36
0  1     84   2724     40  90776    0    0   332   379  407 2740  1  0 78 21
1  2     84   2704     40  90748    0    0   256  1223  430 2602  1  0 55 44
0  1     84   3092     40  90268    0    0  1424   138 1620 2727  1  0 52 47

free -m:
            total       used       free     shared    buffers     cached
Mem:           256        253          2          0          0         88
-/+ buffers/cache:        164         91
Swap:        23673          0      23673

xm top:
xentop - 00:48:23   Xen 3.1.0
3 domains: 1 running, 2 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 4192764k total, 876024k used, 3316740k free    CPUs: 2 @ 2400MHz
     NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) MAXMEM(%) VCPUS 
NETS NETTX(k) NETRX(k) VBDS   VBD_OO   VBD_RD   VBD_WR SSID
 Domain-0 -----r       1622    8.9     262184    6.3   no limit       n/a     2 
   0        0        0    0        0        0        0    0
     kira --b---       1003    3.9     270208    6.4     278528       6.6     1 
   1        0        0    2        0        0        0    0
    sisko --b---        281    0.0     261988    6.2     262144       6.3     2 
   1    19319   158369    2        0   134505   127433    0

Domain config:
#
#  Kernel + memory size
#
kernel  = '/usr/lib/xen/boot/hvmloader'
builder = 'hvm'
memory  = 256
shadow_memory = 8

#
#  Disk device(s).
#
disk    = [ 'file:/machines/kira-disk,hda,w',
           'phy:/dev/hda,hdc:cdrom,r' ]


#
#  Hostname
#
name    = 'kira'


#
#  Networking
#
vif  = [ 'mac=aa:00:84:fd:e7:0d' ]

#
#  Behaviour
#
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'

# New stuff
device_model = '/usr/lib/xen/bin/qemu-dm'
boot='d'
sdl=1
vnc=0
localtime=1
usb=1
usbdevice='tablet'

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