From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dhirendra Pal Singh" Subject: how increase performance of network io in kvm Date: Mon, 10 Mar 2008 11:58:33 -0700 Message-ID: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0127913766==" To: kvm-devel@lists.sourceforge.net Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org --===============0127913766== Content-Type: multipart/alternative; boundary="----=_Part_1549_2167828.1205175513879" ------=_Part_1549_2167828.1205175513879 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi Guys, I am trying to evaluate, kvm at my work for virtual support in our product.. I had setup up a windows guest, in my ubuntu host, on hardware with Intel VT support. Now when I try to download a 1 GB file present, inside windows virtual machine, using samba, from a another linux box, I get the following... a) time when coping from windows in kvm linux:~/tmp # time cp /media/hdisk/1GB_text.txt . real 6m36.478s user 0m0.060s sys 0m8.293s linux:~/tmp # b) time when coping from linux native.. linux:~/tmp/tmp # time cp /media/hdisk/1GB_text . real 0m49.501s user 0m0.040s sys 0m8.657s linux:~/tmp/tmp # So its like 50second (linux native) Vs 6+minutes(windows guest in KVM), which is huge. This is using user based networking, where I am just forwarding all the netbios ports from host to guest. Are there any links, pointers, faqs, ideas , suggestions I could try out to increase the performance of this kvm virtual machine? Will using public bridge (option 3), as described on page http://kvm.qumranet.com/kvmwiki/Networking help? -- Thanks /dev/deep ------=_Part_1549_2167828.1205175513879 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi Guys,

I am trying to evaluate, kvm at my work for virtual support in our product..

I had setup up a windows guest, in my ubuntu host, on hardware with Intel VT support.

Now when I try to download a 1 GB file present, inside windows virtual machine, using samba, from a another linux box, I get the following...


a) time when coping from windows in kvm
  
linux:~/tmp # time cp /media/hdisk/1GB_text.txt .

real    6m36.478s
 
user    0m0.060s
 
sys     0m8.293s
 
linux:~/tmp #
 
   
b) time when coping from linux native..
 
 linux:~/tmp/tmp # time cp /media/hdisk/1GB_text .
 
real    0m49.501s
 
user    0m0.040s
 
sys     0m8.657s
 
linux:~/tmp/tmp #
 

So its like 50second (linux native) Vs 6+minutes(windows guest in KVM), which is huge.

This is using user based networking, where I am just forwarding all the netbios ports from host to guest.

Are there any links, pointers, faqs, ideas , suggestions I could try out to increase the performance of this kvm virtual machine? Will using public bridge (option 3), as described on page http://kvm.qumranet.com/kvmwiki/Networking help?


--
Thanks
/dev/deep ------=_Part_1549_2167828.1205175513879-- --===============0127913766== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ --===============0127913766== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============0127913766==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: "=?ISO-8859-1?Q?Jorge_Luc=E1ngeli_Obes?=" Subject: Re: how increase performance of network io in kvm Date: Mon, 10 Mar 2008 12:13:23 -0700 Message-ID: <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net To: "Dhirendra Pal Singh" Return-path: In-Reply-To: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org On Mon, Mar 10, 2008 at 11:58 AM, Dhirendra Pal Singh wrote: > Hi Guys, > > I am trying to evaluate, kvm at my work for virtual support in our product.. > > I had setup up a windows guest, in my ubuntu host, on hardware with Intel VT > support. > > Now when I try to download a 1 GB file present, inside windows virtual > machine, using samba, from a another linux box, I get the following... > > > a) time when coping from windows in kvm > > linux:~/tmp # time cp /media/hdisk/1GB_text.txt . > > real 6m36.478s > > user 0m0.060s > > sys 0m8.293s > > linux:~/tmp # > > > b) time when coping from linux native.. > > linux:~/tmp/tmp # time cp /media/hdisk/1GB_text . > > real 0m49.501s > > user 0m0.040s > > sys 0m8.657s > > linux:~/tmp/tmp # > > > So its like 50second (linux native) Vs 6+minutes(windows guest in KVM), > which is huge. > > This is using user based networking, where I am just forwarding all the > netbios ports from host to guest. > > Are there any links, pointers, faqs, ideas , suggestions I could try out to > increase the performance of this kvm virtual machine? Will using public > bridge (option 3), as described on page > http://kvm.qumranet.com/kvmwiki/Networking help? Most probably. When I was trying VMGL (http://www.cs.toronto.edu/~andreslc/xen-gl/) in KVM I got a 20-fold increase in performance when I switched from usermode networking to the tap/bridge approach. Definitely try it. I assume you are forced to use a Windows guest, but if not you might also want to try virtio (http://kvm.qumranet.com/kvmwiki/Virtio). ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dhirendra Pal Singh" Subject: Re: how increase performance of network io in kvm Date: Mon, 10 Mar 2008 12:20:18 -0700 Message-ID: <4d56c4330803101220qc0ab054h61fca0b610b09740@mail.gmail.com> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0961350056==" Cc: kvm-devel@lists.sourceforge.net To: "=?UTF-8?Q?Jorge_Luc=C3=A1ngeli_Obes?=" Return-path: In-Reply-To: <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org --===============0961350056== Content-Type: multipart/alternative; boundary="----=_Part_1699_30379408.1205176818279" ------=_Part_1699_30379408.1205176818279 Content-Type: text/plain; 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charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ --===============0961350056== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============0961350056==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dhirendra Pal Singh" Subject: Re: how increase performance of network io in kvm Date: Mon, 10 Mar 2008 12:23:11 -0700 Message-ID: <4d56c4330803101223h6e608252q276cc585d0a65338@mail.gmail.com> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <90eb1dc70803101209m3b9b23fbhd3959b740b6a8d7f@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0944462949==" Cc: kvm-devel@lists.sourceforge.net To: "Javier Guerra" Return-path: In-Reply-To: <90eb1dc70803101209m3b9b23fbhd3959b740b6a8d7f@mail.gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org --===============0944462949== Content-Type: multipart/alternative; boundary="----=_Part_1727_13348113.1205176991797" ------=_Part_1727_13348113.1205176991797 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline sure.. I am going to do bridged networking next thing and re-run my test and see where I get.. Thanks for the info... I am using rtl8139 driver as windows 2003 server wasn't recognizing the default one... ********* the very best would be to have paravirtualized drivers on windows... there's some work on GPL'ed drivers for windows on Xen; does anybody knows if they use a similar interface? (virtio?) ********* Now I don't know where to find that? :( Sorry I am a newbie Thanks again Regards /dev/deep On Mon, Mar 10, 2008 at 12:09 PM, Javier Guerra wrote: > On Mon, Mar 10, 2008 at 1:58 PM, Dhirendra Pal Singh > wrote: > > This is using user based networking, where I am just forwarding all the > > netbios ports from host to guest. > > user based networking is a nice option to have, but a HUGE performance > hog. get bridged networking. > > also, the choice of emulated NIC makes a noticeable difference. i > think e1000 is the fastest these days. > > the very best would be to have paravirtualized drivers on windows... > there's some work on GPL'ed drivers for windows on Xen; does anybody > knows if they use a similar interface? (virtio?) so far their > performance isn't so great, much lower than KVM's e1000, it seems. > but once they optimize it, it could be similar to linux's virtio > drivers. > > > > -- > Javier > -- Thanks Dp [The force is feminine in nature] ------=_Part_1727_13348113.1205176991797 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline sure.. I am going to do bridged networking next thing and re-run my test and see where I get..

Thanks for the info... I am using rtl8139 driver as windows 2003 server wasn't recognizing the default one...

*********
the very best would be to have paravirtualized drivers on windows...
there's some work on GPL'ed drivers for windows on Xen; does anybody
knows if they use a similar interface? (virtio?)
*********
Now I don't know where to find that? :( Sorry I am a newbie

Thanks again
Regards
/dev/deep


On Mon, Mar 10, 2008 at 12:09 PM, Javier Guerra <javier@guerrag.com> wrote:
On Mon, Mar 10, 2008 at 1:58 PM, Dhirendra Pal Singh
<dpal.singh@gmail.com> wrote:
> This is using user based networking, where I am just forwarding all the
> netbios ports from host to guest.

user based networking is a nice option to have, but a HUGE performance
hog.  get bridged networking.

also, the choice of emulated NIC makes a noticeable difference.  i
think e1000 is the fastest these days.

the very best would be to have paravirtualized drivers on windows...
there's some work on GPL'ed drivers for windows on Xen; does anybody
knows if they use a similar interface? (virtio?)  so far their
performance isn't so great, much lower than KVM's e1000, it seems.
but once they optimize it, it could be similar to linux's virtio
drivers.



--
Javier



--
Thanks
Dp
[The force is feminine in nature] ------=_Part_1727_13348113.1205176991797-- --===============0944462949== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ --===============0944462949== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============0944462949==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dor Laor Subject: Re: how increase performance of network io in kvm Date: Tue, 11 Mar 2008 00:37:13 +0200 Message-ID: <1205188633.3249.33.camel@localhost.localdomain> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> Reply-To: dor.laor@qumranet.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: kvm-devel@lists.sourceforge.net, Dhirendra Pal Singh To: Jorge =?ISO-8859-1?Q?Luc=E1ngeli?= 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<59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> <1205188633.3249.33.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net, Dhirendra Pal Singh To: dor.laor@qumranet.com Return-path: In-Reply-To: <1205188633.3249.33.camel@localhost.localdomain> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org On Mon, Mar 10, 2008 at 5:37 PM, Dor Laor wrote: > We published virtio network drivers for Linux but not yet for Windows. > Our virtio drivers for windows are almost done (for rev#1), we'll surely > release the binaries for them. great!! no need to fool around with xen/vmware then :-) any word about availability/license/price on the windows drivers? > In the mean time you can use e1000 nic device & driver. It has the best > results among the emulated devices and even close to virtio performance. and for storage? i'm guessing one of the SCSI emulations would be the best... -- Javier ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dhirendra Pal Singh" Subject: Re: how increase performance of network io in kvm Date: Tue, 11 Mar 2008 13:58:17 -0700 Message-ID: <4d56c4330803111358sfcb1439na92f8f2bd0d74555@mail.gmail.com> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> <1205188633.3249.33.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0231162106==" Cc: kvm-devel@lists.sourceforge.net To: dor.laor@qumranet.com Return-path: In-Reply-To: <1205188633.3249.33.camel@localhost.localdomain> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org --===============0231162106== Content-Type: 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Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ --===============0231162106== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============0231162106==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: "=?ISO-8859-1?Q?Jorge_Luc=E1ngeli_Obes?=" Subject: Re: how increase performance of network io in kvm Date: Tue, 11 Mar 2008 14:03:23 -0700 Message-ID: <59abf66e0803111403s54055cbey2614d2669a677af5@mail.gmail.com> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> <1205188633.3249.33.camel@localhost.localdomain> <4d56c4330803111358sfcb1439na92f8f2bd0d74555@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net To: "Dhirendra Pal Singh" Return-path: In-Reply-To: <4d56c4330803111358sfcb1439na92f8f2bd0d74555@mail.gmail.com> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org > Thanks a lot for your help.. man > > So, the performance numbers with public bridge, actually increases the > performance by many folds. Now I can copy the same 1 gb file in 1.30 mins.. > which is awesome. Cool! > Now a dumb question (sorry :( ), but how do I use e1000 nic device and > driver. -net option can only support "ne2k_pci", "ne2k_isa", "rtl8139", > "smc91c111" and "lance". Which one of them is e1000. Also I am assuming, > that somewhere I can get e1000 device driver for window server 2003 too.. I don't know if the driver is included in Windows 2K3 but it should be easy to find if not. I would try using 'e1000' as the device, that's probably how it was named and it's not yet included in the help text. > If there is already a wiki then can you please point me to it. > > Also I had a suggestion. Would it make sense to update the wiki page to say, > that if you use NAT it will be slower, and for performance, the bridge model > should be used. > Just to make it explicit. I am ready to make the change, if everyone > blesses it.. The VMGL/KVM mini-HOWTO mentions the massive drop in performance using usermode networking, but I think it would be useful to have it in the main networking page also. I would say go ahead, that's what wikis are for =). Jorge ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dhirendra Pal Singh" Subject: Re: how increase performance of network io in kvm Date: Tue, 11 Mar 2008 15:30:57 -0700 Message-ID: <4d56c4330803111530m177137b4q2176f93a2f93a778@mail.gmail.com> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> <1205188633.3249.33.camel@localhost.localdomain> <4d56c4330803111358sfcb1439na92f8f2bd0d74555@mail.gmail.com> <59abf66e0803111403s54055cbey2614d2669a677af5@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1578852039==" Cc: kvm-devel@lists.sourceforge.net To: "=?UTF-8?Q?Jorge_Luc=C3=A1ngeli_Obes?=" Return-path: In-Reply-To: <59abf66e0803111403s54055cbey2614d2669a677af5@mail.gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org --===============1578852039== Content-Type: multipart/alternative; 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charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ --===============1578852039== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============1578852039==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dor Laor Subject: Re: how increase performance of network io in kvm Date: Wed, 12 Mar 2008 11:46:57 +0200 Message-ID: <1205315218.3204.15.camel@localhost.localdomain> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> <1205188633.3249.33.camel@localhost.localdomain> <4d56c4330803111358sfcb1439na92f8f2bd0d74555@mail.gmail.com> <59abf66e0803111403s54055cbey2614d2669a677af5@mail.gmail.com> <4d56c4330803111530m177137b4q2176f93a2f93a778@mail.gmail.com> Reply-To: dor.laor@qumranet.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net To: Dhirendra Pal Singh Return-path: In-Reply-To: <4d56c4330803111530m177137b4q2176f93a2f93a778@mail.gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org On Tue, 2008-03-11 at 15:30 -0700, Dhirendra Pal Singh wrote: > I tried e1000 and it says "qemu: Unsupported NIC: e1000".... :( Did I > miss something.. ? > > I downloaded the latest code base for qemu, and I see the following > lines in qemu-doc.texi > > ********************* > @code{i82551}, @code{i82557b}, @code{i82559er}, > @code{ne2k_pci}, @code{ne2k_isa}, @code{pcnet}, @code{rtl8139}, > @code{smc91c111}, @code{lance} and @code{mcf_fec}. The new source contains e1000 line too > ********************* > > I don't see any e1000 entry there? Meanwhile I am trying to build > latest version of qemu and see if it gets me anywhere. > > You probably use the qemu that comes with your distribution and not the new source. You should find a qemu/hw/e1000.c file if you have an updated repository. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dhirendra Pal Singh" Subject: Re: how increase performance of network io in kvm Date: Fri, 14 Mar 2008 08:26:14 -0700 Message-ID: <4d56c4330803140826k401a14e3k939036597bd72124@mail.gmail.com> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> <1205188633.3249.33.camel@localhost.localdomain> <4d56c4330803111358sfcb1439na92f8f2bd0d74555@mail.gmail.com> <59abf66e0803111403s54055cbey2614d2669a677af5@mail.gmail.com> <4d56c4330803111530m177137b4q2176f93a2f93a778@mail.gmail.com> <1205315218.3204.15.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0623163959==" Cc: kvm-devel@lists.sourceforge.net To: dor.laor@qumranet.com Return-path: In-Reply-To: <1205315218.3204.15.camel@localhost.localdomain> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org --===============0623163959== Content-Type: multipart/alternative; boundary="----=_Part_830_19006589.1205508374085" ------=_Part_830_19006589.1205508374085 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline On Wed, Mar 12, 2008 at 2:46 AM, Dor Laor wrote: > > On Tue, 2008-03-11 at 15:30 -0700, Dhirendra Pal Singh wrote: > > I tried e1000 and it says "qemu: Unsupported NIC: e1000".... :( Did I > > miss something.. ? > > > > I downloaded the latest code base for qemu, and I see the following > > lines in qemu-doc.texi > > > > ********************* > > @code{i82551}, @code{i82557b}, @code{i82559er}, > > @code{ne2k_pci}, @code{ne2k_isa}, @code{pcnet}, @code{rtl8139}, > > @code{smc91c111}, @code{lance} and @code{mcf_fec}. > > The new source contains e1000 line too > > ********************* > > > > I don't see any e1000 entry there? Meanwhile I am trying to build > > latest version of qemu and see if it gets me anywhere. > > > > > > You probably use the qemu that comes with your distribution and not the > new source. > > You should find a qemu/hw/e1000.c file if you have an updated > repository. > > I got the latest snapshot of qemu and sure enough there was e1000 driver support in it.. Though I didn't see much difference between RealTek Driver Vs e1000... Following was the test result... Copying 1GB file real 3m48.284s user 0m0.072s sys 0m8.609s Though a bit lesser then RealTek, it isn't much.. It seems i will have to wait for VirtIO drivers... If you or anyone else has any ideas on how to improve network performance then please do share.. BTW where can I check when windows binary will be ready as I would like to give it a shot? Thanks and Regards Deep -- Thanks Dp [The force is feminine in nature] ------=_Part_830_19006589.1205508374085 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline

On Wed, Mar 12, 2008 at 2:46 AM, Dor Laor <dor.laor@gmail.com> wrote:

On Tue, 2008-03-11 at 15:30 -0700, Dhirendra Pal Singh wrote:
> I tried e1000 and it says  "qemu: Unsupported NIC: e1000".... :( Did I
> miss something.. ?
>
> I downloaded the latest code base for qemu, and I see the following
> lines in qemu-doc.texi
>
> *********************
> @code{i82551}, @code{i82557b}, @code{i82559er},
> @code{ne2k_pci}, @code{ne2k_isa}, @code{pcnet}, @code{rtl8139},
> @code{smc91c111}, @code{lance} and @code{mcf_fec}.

The new source contains e1000 line too
> *********************
>
> I don't see any e1000 entry there? Meanwhile I am trying to build
> latest version of qemu and see if it gets me anywhere.
>
>

You probably use the qemu that comes with your distribution and not the
new source.

You should find a qemu/hw/e1000.c file if you have an updated
repository.

I got the latest snapshot of qemu and sure enough there was e1000 driver support in it.. Though I didn't see much difference between RealTek Driver Vs e1000...
Following was the test result...

Copying 1GB file
real    3m48.284s
user    0m0.072s
sys     0m8.609s

Though a bit lesser then RealTek,  it isn't much.. It seems i will have to wait for VirtIO drivers...

If you or anyone else has any ideas on how to improve network performance then please do share..

BTW where can I check when windows binary will be ready as I would like to give it a shot?

Thanks and Regards
Deep


--
Thanks
Dp
[The force is feminine in nature] ------=_Part_830_19006589.1205508374085-- --===============0623163959== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ --===============0623163959== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============0623163959==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: how increase performance of network io in kvm Date: Fri, 14 Mar 2008 10:55:18 -0500 Message-ID: <47DA9FE6.8020504@codemonkey.ws> References: <4d56c4330803101158x16fc9b87q4b332263f74cc0@mail.gmail.com> <59abf66e0803101213h2ce5b153k2bd2e71d5c329a2d@mail.gmail.com> <1205188633.3249.33.camel@localhost.localdomain> <4d56c4330803111358sfcb1439na92f8f2bd0d74555@mail.gmail.com> <59abf66e0803111403s54055cbey2614d2669a677af5@mail.gmail.com> <4d56c4330803111530m177137b4q2176f93a2f93a778@mail.gmail.com> <1205315218.3204.15.camel@localhost.localdomain> <4d56c4330803140826k401a14e3k939036597bd72124@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net To: Dhirendra Pal Singh Return-path: In-Reply-To: <4d56c4330803140826k401a14e3k939036597bd72124@mail.gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org Dhirendra Pal Singh wrote: > I got the latest snapshot of qemu and sure enough there was e1000 > driver support in it.. Though I didn't see much difference between > RealTek Driver Vs e1000... > Following was the test result... > > Copying 1GB file > real 3m48.284s > user 0m0.072s > sys 0m8.609s You won't see much of a performance improvement unless you're using tap instead of usernet. Regards, Anthony Liguori ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/