From alex.tuxx at gmail.com Mon Apr 15 18:20:19 2013 Content-Type: multipart/mixed; boundary="===============2768840470397137425==" MIME-Version: 1.0 From: Alex Leonhardt To: users at ovirt.org Subject: [Users] 102 VDSM processes ? Date: Mon, 15 Apr 2013 23:20:17 +0100 Message-ID: <516C7D21.702@gmail.com> --===============2768840470397137425== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable This is a multi-part message in MIME format. --------------080207050600010608050805 Content-Type: text/plain; charset=3DISO-8859-1; format=3Dflowed Content-Transfer-Encoding: 7bit Hi, I'm wondering why my Hyper-Visor is running 102 vdsm processes, each = using ~20mb =3D 2GB used ?? Is this expected and normal ?? Thanks, Alex -- = www.vcore.co | www.vsearchcloud.com | Follow @www_vcore_co = --------------080207050600010608050805 Content-Type: text/html; charset=3DISO-8859-1 Content-Transfer-Encoding: 7bit Hi,

I'm wondering why my Hyper-Visor is running 102 vdsm processes, each using ~20mb =3D 2GB used ?? Is this expected and normal ??

Thanks,
Alex

--
ww= w.vcore.co | www.vsearchcloud.com | Follow @www_vcore_co

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On 04/16/2013 06:20 AM, Alex Leonhardt wrote:

Hi,

I'm wondering why my Hyper-Visor is running 102 vdsm processes, each using ~20mb =3D 2GB used ?? Is this expected and normal ??

vdsm uses the= models of multi-threading and = multi-processes both. So not sure if they're all processes. Could you please paste what you see here here? Or capture the output of command "ps -L aux|grep vdsm" on your hypervisor.

Thanks!
Mark.

Thanks,
Alex

--
www.vcore.co | www.vsearchcloud.com | Follow @www_vcore_co
_______________________________________________
Users mailing list
Use=
rs(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

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Date: Wed, 24 Apr 2013 10:59:36 -0400 Message-ID: <1763509360.1346453.1366815576663.JavaMail.root@redhat.com> In-Reply-To: 516C7D21.702@gmail.com --===============6416027223455320476== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hey , For your question, VDSM creates external processes for each storage operati= on it performs. Using external process allows to make parallel operations w= ithout being blocked on IO tasks, which can cause denial of service (like r= eading files on unreachable mount). To save kernel time that can be wasted by creating those external processes= , for each domain we start a process pool of 10 processes. This means that if we configure 10 storage domains on specific host, it sta= rts 100 process + 1 process for vdsm and 1 for supervdsm. Each operation on the domain will use one of the processes in the domain's = pool. Vdsm process is the main process that responses to API requests and manage = all operations. supervdsm is another external process to vdsm that allows v= dsm to run root commands. = That's explain the 102 processes that you saw. We try to make each process allocation small as possible, without loading u= nnecessary packages. I'll be glad to answer more specific questions about that implementation if= requested. Regards, Yaniv Bronhaim. = ----- Original Message ----- > From: "Alex Leonhardt" > To: users(a)ovirt.org > Sent: Tuesday, April 16, 2013 1:20:17 AM > Subject: [Users] 102 VDSM processes ? > = > Hi, > = > I'm wondering why my Hyper-Visor is running 102 vdsm processes, each using > ~20mb =3D 2GB used ?? Is this expected and normal ?? > = > Thanks, > Alex > = > -- > www.vcore.co | www.vsearchcloud.com | Follow @www_vcore_co > = > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users >=20 --===============6416027223455320476==--