Re: [Xen-devel] Patching error while setting up COLO

2016-03-19 Thread Yu-An(Victor) Chen
, Mar 15, 2016 at 11:06 PM, Yu-An(Victor) Chen <chen...@usc.edu> wrote: > Hi Changlong, > > Thanks for the reply, the script works now. Now I have a question about > the network setup: according to the website > <http://wiki.xenproject.org/wiki/COLO_-_Coarse_Grain_Lock_Stepp

Re: [Xen-devel] Patching error while setting up COLO

2016-03-16 Thread Yu-An(Victor) Chen
t;xiecl.f...@cn.fujitsu.com> wrote: > On 03/09/2016 06:57 AM, Yu-An(Victor) Chen wrote: > >> Sorry for the duplicated email Congyang, I forgot to replied all: >> >> Hi Congyang, >> >> Thank you for the hint, after building xen, your script works for >> qemu-xen!

Re: [Xen-devel] Patching error while setting up COLO

2016-03-08 Thread Yu-An(Victor) Chen
ut the img in that location? if so what kind of img specifically? because when I look into /mnt/ramfs, it is an empty directory. Thank you! On Sun, Mar 6, 2016 at 5:12 PM, Wen Congyang <we...@cn.fujitsu.com> wrote: > On 03/05/2016 09:51 AM, Yu-An(Victor) Chen wrote: > > Hi Congyang, >

Re: [Xen-devel] Patching error while setting up COLO

2016-03-04 Thread Yu-An(Victor) Chen
am missing? Thank you! Victor On Thu, Mar 3, 2016 at 6:15 PM, Wen Congyang <we...@cn.fujitsu.com> wrote: > On 03/04/2016 10:01 AM, Yu-An(Victor) Chen wrote: > > Hi, > > > > So I git clone > https://urldefense.proofpoint.com/v2/url?u=https-3A__gith

Re: [Xen-devel] Patching error while setting up COLO

2016-03-03 Thread Yu-An(Victor) Chen
py and paste the above command into the terminal and execute? Thank you! Victor Thank you! On Thu, Mar 3, 2016 at 2:46 AM, Wen Congyang <we...@cn.fujitsu.com> wrote: > On 03/03/2016 05:39 PM, Yu-An(Victor) Chen wrote: > > Hi Changlong, > > > > Thanks for the repl

Re: [Xen-devel] Patching error while setting up COLO

2016-03-03 Thread Yu-An(Victor) Chen
t the same error. the qemu-colo I cloned from is provided by you https://github.com/wencongyang/qemu-colo.git Thank you! Victor On Thu, Feb 25, 2016 at 9:07 PM, Changlong Xie <xiecl.f...@cn.fujitsu.com> wrote: > On 02/26/2016 12:55 PM, Yu-An(Victor) Chen wrote: > >> Hi Changlong

[Xen-devel] Problem setting up HVM ubuntu guest with Remus

2016-02-26 Thread Yu-An(Victor) Chen
Hi, I was able to follow the instruction on http://wiki.xenproject.org/wiki/Install_Xen_4.2.1_with_Remus_and_DRBD_on_Ubuntu_12.10 to get a working Remus with PV guests. But now I am trying to do the same thing but for HVM guests. So I created a HVM guest on Xen by following

Re: [Xen-devel] Patching error while setting up COLO

2016-02-25 Thread Yu-An(Victor) Chen
Hi Changlong, Are you suggesting I should hold off on setting up COLO for now? Thanks! Victor On Thu, Feb 25, 2016 at 8:19 PM, Changlong Xie <xiecl.f...@cn.fujitsu.com> wrote: > On 02/26/2016 11:38 AM, Yu-An(Victor) Chen wrote: > >> Hi Changlong, >> >> Thank

Re: [Xen-devel] Patching error while setting up COLO

2016-02-25 Thread Yu-An(Victor) Chen
Hi Changlong, Thanks for the reply! So I am trying to follow your new instructions, but when I am trying to do this: cd ~/colo-proxy/; git checkout 405527cbfa9f I got the following error: "error: pathspec '405527cbfa9f' did not match any file(s) known to git." I assume it is just a typo?

[Xen-devel] Patching error while setting up COLO

2016-02-24 Thread Yu-An(Victor) Chen
Hi, I am trying to set up COLO by following this http://wiki.xenproject.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping I was able to follow the step up to $git am ~/ColoPatchForQemu/*.patch When I try to run the above command, I got the following error: error: patch failed:

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-12-01 Thread Yu-An(Victor) Chen
Hi all, A little update, so yea when I run with tasks that has utilization less than 0.5. Xen-RTDS is able to complete all those tasks. Thank you guys very much for helping me understand the problem! On Tue, Dec 1, 2015 at 2:11 AM, Lars Kurth wrote: > I wonder

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-29 Thread Yu-An(Victor) Chen
is very likely > unscheduble in practice. In addition, it will tell you taskset > utilization is not the only factor that affects the schedulablity. > Other factors, such as the highest taks utilization in a taskset, > scheduling algorithm, task period relation, can affect schedulability >

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-29 Thread Yu-An(Victor) Chen
<xumengpa...@gmail.com> wrote: > 2015-11-29 11:27 GMT-05:00 Dario Faggioli <dario.faggi...@citrix.com>: > > On Sun, 2015-11-29 at 10:38 -0500, Meng Xu wrote: > >> > >> > >> 2015-11-29 7:46 GMT-05:00 Yu-An(Victor) Chen <chen...@usc.edu>: &

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-28 Thread Yu-An(Victor) Chen
, there are a sequence of jobs, if any job misses deadline, then the whole taskset is qualified as failed to be schedulable. Thank you Victor On Fri, Nov 27, 2015 at 4:17 PM, Meng Xu <xumengpa...@gmail.com> wrote: > 2015-11-27 14:50 GMT-05:00 Yu-An(Victor) Chen <chen...@usc.edu>: >

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-27 Thread Yu-An(Victor) Chen
am hoping to see that the VM1 using xen-rtds will perform better than the VM1 using xen-credit, but what I am seeing is the opposite. Thank you! Victor On Tue, Nov 24, 2015 at 4:15 PM, Dario Faggioli <dario.faggi...@citrix.com> wrote: > On Mon, 2015-11-23 at 07:42 -0800, Yu-An(Victor) C

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-27 Thread Yu-An(Victor) Chen
;dario.faggi...@citrix.com>: > > On Fri, 2015-11-27 at 08:36 -0800, Yu-An(Victor) Chen wrote: > >> Hi Dario, > >> > > Hi, > > > >> Thanks for the reply! > >> > > You're welcome. :-) > > > > I'm adding Meng to Cc... > &g

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-23 Thread Yu-An(Victor) Chen
> 2015-11-23 11:35 GMT-05:00 Yu-An(Victor) Chen <chen...@usc.edu>: > > Hi Meng, > > > > Thank you very much for replying! > > > > The RT tasks I am running for each trial at a certain utilization rate > is a > > collection of real-time tasks, and each rea

[Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-23 Thread Yu-An(Victor) Chen
Hi all, So I was doing some experiments to evaluate RTDS scheduler schedubility of real time tasks using 1vm with period of 1 and budget of 1. The experiment results turn out as expected(perform better than xen-credit). But when I tried to perform similar experiments with 2 vms (both

Re: [Xen-devel] xen 4.5.0 rtds scheduler perform poorly with 2vms

2015-11-23 Thread Yu-An(Victor) Chen
, Meng Xu <xumengpa...@gmail.com> wrote: > Hi Yu-An, > > 2015-11-23 10:42 GMT-05:00 Yu-An(Victor) Chen <chen...@usc.edu>: > > > > Hi all, > > > > So I was doing some experiments to evaluate RTDS scheduler schedubility > of real time tasks us

[Xen-devel] how to trace scheduling overheads using xentrace/xenalyze

2015-10-06 Thread Yu-An(Victor) Chen
Hi, I am new to xen environment and I am wondering how to trace scheduling overhead of guest vm using xentrace/xenalyze ? I have tried using $xentrace -D -e all -S 256 {filename} and then use various xenalyze options but most of them gave me empty result, and I dont really see where I can get

[Xen-devel] how to use xentrace_format correctly

2015-10-06 Thread Yu-An(Victor) Chen
Hi, I am not sure how to use xentrace_format given that I have a trace file. Can someone gave me an example def file and the correct commands?? Thank you! ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel