Re: [Xen-users] Network Problems in Dom0

[Igor Chubin <igor@xxxxxxx>]

On Do, MÃr 27, 2008 at 09:13:17 +0000, Ralf Jansen wrote:
> Hello, 
> maybe someone can help us. We are running a Mail-Server in a xenU-Domain 
> since 3 month without any problems.
> But now we have trouble with dom0. In dom0 the ssh-Daemon is running but we 
> only can only login sometimes via putty (Network error: Connection timeout).
> We need 5-8 times till we can login with putty. After login the server is 
> very very slow. Processes respond with delay.
> Does someone have an idea?


Very simple idea: DNS reverse lookup problem?


If it is not DNS, please check:

When you ping dom0,
what is the percent of packet loss?

Also, what is the percent of packet loss
when you do ping flood (ping -f)?

And the same questions, about situation 
when you make ping out of dom0.



> 
> Thanks,
> jansen 
> 
> 
> Here some infos about the server: 
> 
> Last login: Wed Mar 26 09:59:22 2008 from 195.37.18.230
> xenmail-dom0:~ # xm list
> Name                                      ID   Mem VCPUs      State   Time(s)
> Domain-0                                   0   512     1     r-----   5712.8
> mailserver                                   1  2048     2     -b----   3521.1
> xenmail-dom0:~ #
> 
> 
> xentop - 10:07:06   Xen 3.0.4_13138-0.47
> 2 domains: 1 running, 1 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
> Mem: 16776184k total, 2862056k used, 13914128k free    CPUs: 4 @ 2000MHz
>       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       5713    0.3     524456    3.1   no limit       n/a    
>  4
>     4     4061    12769    0        0        0        0    0
>     mailserver --b---       3525    0.1    2096708   12.5    2097152      
> 12.5     2
>     2    56264   223022    3        0    17947  1094274    0
> 
> 
>       Lesen Sie Ihre E-Mails jetzt einfach von unterwegs.
> www.yahoo.de/go
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

-- 
WBR, i.m.chubin


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users