Hello!
I have a Windows VM which behaves extremely slow. In VNC it takes tens of
seconds for a mouse movement to be reflected by the cursor and a click or
keypress takes minutes to have an effect. A connection via RDP is not possible
at all, because it is impossible to connect to the host.
I do not think I have enabled any limitations on cpu consumption for this vm,
nor do I have another explanation for the slowness. Another vm (also hvm) is
working normally.
Does anyone have an idea why the machine could be so slow?
xm top displays the machine like this:
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
XXX ------ 21 0.3 1056640 11.2 1064960 11.3
1 1 677 13 2 0 27908 3096 0
I have the config of this vm attached.
Kind regards,
Dennis
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On Thursday 02 June 2011 22:51:31 Dennis Schridde wrote:> I have a Windows VM which behaves extremely slow. In VNC it takes tens of > seconds for a mouse movement to be reflected by the cursor and a click or > keypress takes minutes to have an effect. A connection via RDP is not > possible at all, because it is impossible to connect to the host. > > I do not think I have enabled any limitations on cpu consumption for this > vm, nor do I have another explanation for the slowness. Another vm (also > hvm) is working normally. > > Does anyone have an idea why the machine could be so slow? > > xm top displays the machine like this: > 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 > XXX ------ 21 0.3 1056640 11.2 1064960 11.3 > 1 1 677 13 2 0 27908 3096 0 > > I have the config of this vm attached.P.S: I forgot a few things: 1) Please CC me, because I am not on the list. 2) The slowness starts when I connect via VNC. Before that the status is "-- b---" instead of "------", and it changes to the latter immediately. 3) The used cpu percentage is at 10-20 percent until I connect via VNC, then it drops to below 1, i.e. 0.X. 4) VBD_RD is always counting up, right from the very start. There is no influence of a VNC connection to this parameter. 5) I am using CentOS 5.6 with xen 3.1.2-238.9.1.el5 and kernel 2.6.18-238.9.1.el5xen. --Dennis _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thursday 02 June 2011 23:06:10 Dennis Schridde wrote:> On Thursday 02 June 2011 22:51:31 Dennis Schridde wrote: > > I have a Windows VM which behaves extremely slow. In VNC it takes tens of > > seconds for a mouse movement to be reflected by the cursor and a click or > > keypress takes minutes to have an effect. A connection via RDP is not > > possible at all, because it is impossible to connect to the host. > > > > I do not think I have enabled any limitations on cpu consumption for this > > vm, nor do I have another explanation for the slowness. Another vm (also > > hvm) is working normally. > > > > Does anyone have an idea why the machine could be so slow? > > > > xm top displays the machine like this: > > 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 > > > > XXX ------ 21 0.3 1056640 11.2 1064960 > > 11.3 > > > > 1 1 677 13 2 0 27908 3096 0 > > > > I have the config of this vm attached. > > P.S: I forgot a few things:P.P.S: Some corrections to my text to prevent misunderstandings:> 1) Please CC me, because I am not on the list. > 2) The slowness starts when I connect via VNC.The slowness builds up quickly after connecting via VNC. First the mouse cursor moves jumpily, then after a few seconds it doesnt move at all anymore. 2.1) Before that the status is "-- b---" instead of "------", and it changes to the latter shortly after connecting.> 3) The used cpu percentage is at 10-20 percent until I connect via VNC, > then it drops to below 1, i.e. 0.X. > 4) VBD_RD is always counting up, right from the very start. There is no > influence of a VNC connection to this parameter. > 5) I am using CentOS 5.6 with xen 3.1.2-238.9.1.el5 and kernel > 2.6.18-238.9.1.el5xen. > > --Dennis_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thursday 02 June 2011 23:10:10 Dennis Schridde wrote:> On Thursday 02 June 2011 23:06:10 Dennis Schridde wrote: > > On Thursday 02 June 2011 22:51:31 Dennis Schridde wrote: > > > I have a Windows VM which behaves extremely slow. In VNC it takes tens > > > of seconds for a mouse movement to be reflected by the cursor and a > > > click or keypress takes minutes to have an effect. A connection via > > > RDP is not possible at all, because it is impossible to connect to the > > > host. > > > > > > I do not think I have enabled any limitations on cpu consumption for > > > this vm, nor do I have another explanation for the slowness. Another > > > vm (also hvm) is working normally.The other vm is a CentOS 5.6, config attached.> > > > > > Does anyone have an idea why the machine could be so slow? > > > > > > xm top displays the machine like this: > > > 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 > > > > > > XXX ------ 21 0.3 1056640 11.2 1064960 > > > 11.3 > > > > > > 1 1 677 13 2 0 27908 3096 0 > > > > > > I have the config of this vm attached. > > > > P.S: I forgot a few things: > P.P.S: Some corrections to my text to prevent misunderstandings: > > 1) Please CC me, because I am not on the list. > > 2) The slowness starts when I connect via VNC. > > The slowness builds up quickly after connecting via VNC. First the mouse > cursor moves jumpily, then after a few seconds it doesnt move at all > anymore. > > 2.1) Before that the status is "-- b---" instead of "------", and it > changes to the latter shortly after connecting. > > > 3) The used cpu percentage is at 10-20 percent until I connect via VNC, > > then it drops to below 1, i.e. 0.X. > > 4) VBD_RD is always counting up, right from the very start. There is no > > influence of a VNC connection to this parameter. > > 5) I am using CentOS 5.6 with xen 3.1.2-238.9.1.el5 and kernel > > 2.6.18-238.9.1.el5xen. > > > > --Dennis_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users