[Xen-users] Dom0 NETTX, NETRX alway are 0

[明石 れい <r-akashi@xxxxxxxxxxxxx>]

 I tried netperf / netserver with Dom0 / DomU, but I could'nt get a correct
NW traffic with xentop. Is there anybody could help me?

At Host1's Dom0, run netperf -H VMIP
At Host2's DomU (with VMIP named TTVM), run netserver

At Host1, run xentop this way ->"xentop -n -b -d 1"
At Host2, run xentop this way->"xentop -n -b -d 1"

In Host2's xentop, I got the DomU's NETRX and DomU's CPU as well as
Dom0's high load during netperf running. It means DomU accturally received
the packats from Host1's Dom0.

 TTVM's NETRX changed this way : 9699596->9709952->9845192

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 2145 0.7 523008 6.2 no limit n/a 1 0 0 0 0 0 0 0 0
TTVM --b--- 189 0.1 260864 3.1 262144 3.1 1 1 21583488 9699596 1 0 2270
1325 0
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 2145 8.2 523008 6.2 no limit n/a 1 0 0 0 0 0 0 0 0
TTVM -----r 189 4.8 260864 3.1 262144 3.1 1 1 21583672 9709952 1 0 2270
1325 0
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 2146 100.5 523008 6.2 no limit n/a 1 0 0 0 0 0 0 0 0
TTVM -----r 189 59.4 260864 3.1 262144 3.1 1 1 21586024 9845192 1 0 2270
1325 0

But packat sender Host1's CPU changed this way : 0.4%->71.6%->100.5
(because it with 2 vcpus)
I could not get packats sending out from Host1. The NETTX no changes
anymore 0->0->0.

Domain-0 -----r 18938 0.4 523008 6.2 no limit n/a 2 0 0 0 0 0 0 0 0
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 18938 71.6 523008 6.2 no limit n/a 2 0 0 0 0 0 0 0 0
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 18939 100.5 523008 6.2 no limit n/a 2 0 0 0 0 0 0 0 0
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

  And netperf ran well and give a correct NW bencmark.

  I could understand the strange issue, what's wrong? 
  Is there any network interface or vif's configuration perhaps I missed?
  Any help is much appreciated.
                                                           L.Wang 






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