WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

Re: [Xen-users] Xen Cloud Platform Problem

To: Chris Petrolino <cpetrolino@xxxxxxxxx>
Subject: Re: [Xen-users] Xen Cloud Platform Problem
From: inas mohamed <inas_2003@xxxxxxxxx>
Date: Sun, 26 Jun 2011 22:15:06 -0700 (PDT)
Cc: "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Sun, 26 Jun 2011 22:16:33 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1309151706; bh=qvvRxYLX1a06us15VwD43p8TkkBb4Bi7f6dPQFAEeWI=; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=rXB0rLGHvMBLjupgEOUMrLs6fe1Hkh7vv4Nf94Aid6f3l2U6L0hzcTOrJ6Yq8Iq+Ul8p7mnafEHE4MO2cvKNQb2fl0KJGyAFvPTFgl9JxUXFkz+4UftWAf/gt+1mcGt56L2SRGeTnPS+oUc2SbJUoOCcHUhIx0PgHtosv6NYtKw=
Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=tOD5GkvQQKtdhPT8bUaAiAs1DwjOozuiu+p243CWeCfvnLcWJXZDEUUNTXTF6QRrJVE94AokJQFgl1jK+zyUKlkhiV+YsozwhVPNgx7soOrdPplN3LrnIiiYUpG0rj/KhmvKA0DqFEjxc+tFRDvyQz9+9gT7i/XqlvaMNUEzJD0=;
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <8046602012239292022@unknownmsgid>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Hi,

Thanks so much for replying, and yes I am using XCP 0.5 . Is this a problem in XCP 0.5 and I observed that ovs-vswitchd is using too much memory (more than 50% from top command) and it makes the CPU usage reached to 100%. I don't know what is this daemon? and is it the problem if yes how to solve this problem.

Thanks again for your help

Inas

--- On Sun, 6/26/11, Chris Petrolino <cpetrolino@xxxxxxxxx> wrote:

From: Chris Petrolino <cpetrolino@xxxxxxxxx>
Subject: Re: [Xen-users] Xen Cloud Platform Problem
To: "inas mohamed" <inas_2003@xxxxxxxxx>
Cc: "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Date: Sunday, June 26, 2011, 8:23 PM



Kind Regards,

Christopher James Petrolino


On Jun 26, 2011, at 4:33 AM, inas mohamed <inas_2003@xxxxxxxxx> wrote:

Hi everybody,

I hope I'll find any one can help me in this big prblem.

I have 10 XCP hosts, some of them has more than 2 Virtal machines (max 4 VMs)

each host has:
Intel Quad Core i7 2.8Gig
2*1T HDD
1*1G NIC for internal use
1*100 Mbps connected to public network
12 GB RAM

for example for one of them (XCP 0.5) Host:

                 To clarify, you are using XCP 0.5? If so I would definitely suggest upgrading to 1.0 

I installed 2 Centos VMs each with 3GB RAM, and 4VCPUs and 910 GB VHDD and 2 VNICs, I followed the documentation to install them. and I increased the Dom0 memory by editing /boot/extlinux.conf "dom0_mem=2940M" because I faced too many problems with default values and I thought it will be better if I increased the mem.

BUT NOW every 2 weeks " may be less" all my XCP hosts hanging and when I tried to check RAM using xentop I got:

xentop - 10:15:06   Xen 3.4.2
3 domains: 1 running, 2 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 12573752k total, 8600008k used, 3973744k free    CPUs: 8 @ 2809MHz
      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     537556   13.1    2095872   16.7    2095872      16.7     8    0        0        0    0        0        0        0    0
Download B --b---      16500    2.0    3145728   25.0    3145728      25.0     4    2    59102  4239032    1        0    43473  2535945    0
User Profi --b---      16873    0.8    3145728   25.0    3145728      25.0     4    2    50837   339454    1        0    46217  2708478    0

and O/P from "free -m "
free -m
             total       used       free     shared    buffers     cached
Mem:          2047       1768        278          0        121        534
-/+ buffers/cache:       1112        934
Swap:          511          0        511

and from "top" only:
top - 10:17:25 up 24 days,  2:09,  1 user,  load average: 0.18, 0.24, 0.56
Tasks:  83 total,   2 running,  81 sleeping,   0 stopped,   0 zombie
Cpu(s):  6.0%us,  0.3%sy,  0.0%ni, 92.7%id,  1.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   2096132k total,  1810692k used,   285440k free,   123932k buffers
Swap:   524280k total,      200k used,   524080k free,   547272k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                        
 5517 root      10 -10  930m 925m  948 S  8.7 45.2   8204:39 ovs-vswitchd                                                                                   
 1163 root      15  -5     0    0    0 S  1.3  0.0 428:06.76 netback   

and after restarting, every thing working fine again and after some time hanging again and when I am trying to ping my VMs some times I am getting timeout, and some times I am loosing data packets.
 I want to know why my XCP hosts hanging and not responding after sometime.
 
Any help will be appriciated,Please

Inas

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

-----Inline Attachment Follows-----

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
<Prev in Thread] Current Thread [Next in Thread>