[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Re: Windows VM extremely slow
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 Attachment:
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