Satoshi Uchida
2006-Jun-21 09:52 UTC
[Xen-devel] [PATCH 3/3] Output Virtual Block Device requests information for xentop
This patch adds VBD statistical information into xentop.
Our new xentop collects I/O requests from /proc/xen/vbd and displays them.
This is an example output of the new xentop in the case of 4 VMs.
xentop - 15:34:01 Xen 3.0-unstable
5 domains: 1 running, 4 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 2620476k total, 2128040k used, 492436k free CPUs: 2 @ 2992MHz
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 117 5.8 1048780 40.0 no limit n/a 2
8 1 429 0 0 0 0 0
VM1 --b--- 13 0.0 262144 10.0 262144 10.0
2 1 0 6 1 0 20373 4 0
VN2 --b--- 16 0.2 261952 10.0 262144 10.0
2 1 2 155 1 0 3075 875 0
VM3 --b--- 15 0.1 261920 10.0 262144 10.0
2 1 0 110 1 0 3079 761 0
VM4 --b--- 15 0.1 261888 10.0 262144 10.0
2 1 0 85 1 0 3068 813 0
Delay Networks vBds VCPUs Repeat header Sort order Quit
As compared with the traditional xentop, new statistical information
(VBDS, VBD_OO, VBD_RD and VBD_WR) is added.
In detail mode, outputs of xentop is as follows.
xentop - 15:34:24 Xen 3.0-unstable
5 domains: 1 running, 4 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 2620476k total, 2128036k used, 492440k free CPUs: 2 @ 2992MHz
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 119 7.5 1048660 40.0 no limit n/a 2
8 1 459 0 0 0 0 0
VM1 --b--- 13 0.0 262144 10.0 262144 10.0 2 1
0 6 1 0 20373 4 0
VBD 8:21 oo 0 rd 20373 wr 4
VM2 --b--- 16 0.1 261904 10.0 262144 10.0 2 1
2 185 1 0 3075 915 0
VBD 8:22 oo 0 rd 3075 wr 915
VM3 --b--- 15 0.1 262004 10.0 262144 10.0 2 1
0 140 1 0 3079 895 0
VBD 8:23 oo 0 rd 3079 wr 895
VM4 --b--- 15 0.1 261968 10.0 262144 10.0 2 1
0 115 1 0 3068 814 0
VBD 8:24 oo 0 rd 3068 wr 814
Delay Networks vBds VCPUs Repeat header Sort order Quit
Information about each VBD is displayed under a line of corresponding domain.
Thanks,
Satoshi UCHIDA
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