<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 28 May 2015, at 14:28, Dhanny R <<a href="mailto:dhanker2626@gmail.com" class="">dhanker2626@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class=""><div class=""><div class=""><div class="">sorry for my miss information, n sorry for my bad english language :D<br class=""><br class=""></div>my problem are :<br class=""></div>where i in liblitmus : why i cant choose active plugins with setsched? the error message is<br class="">Error: Cannot write to /proc/litmus/active_plugin. Do you have root privileges?<br class="">Error: Setting new plugin failed.<br class="">Are there any active real-time tasks?<br class="">root@:~/liblitmus# <br class=""><br class=""></div><div class="">coz i following step by step from : <a href="https://wiki.litmus-rt.org/litmus/UserspaceTools" class="">https://wiki.litmus-rt.org/litmus/UserspaceTools</a><br class=""></div><div class=""><br class=""></div>regards,<br class=""></div>Dhany<br class=""><div class=""><div class=""><div class=""><br class=""></div></div></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Thu, May 28, 2015 at 7:17 PM, Björn Brandenburg <span dir="ltr" class=""><<a href="mailto:bbb@mpi-sws.org" target="_blank" class="">bbb@mpi-sws.org</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class=""><br class=""><div class=""><span class=""><blockquote type="cite" class=""><div class="">On 28 May 2015, at 14:13, Dhanny R <<a href="mailto:dhanker2626@gmail.com" target="_blank" class="">dhanker2626@gmail.com</a>> wrote:</div><br class=""><div class=""><div style="font-family:Helvetica;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" class=""><div class=""><span class="">> after finish install rt-xen 2.0 with xen 4.5 include, i create 2 guest dom0 with ubuntu linux 3.10.41, for this time, they all okay..<br class="">> then i install LITMUS with the configuration preempt :<br class=""><br class=""></span>Are you perhaps accidentally launching the wrong kernels?<br class=""><br class=""></div>yeah, i think i'm in the right path, coz after create 2 guest OS in 2 vcpu (vm1 n vm2), i'm install LITMUS inside (vm1 n vm2),<span class=""> </span><br class=""></div><span style="font-family:Helvetica;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important" class="">in root vm1 n vm 2 : uname -a</span><br style="font-family:Helvetica;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" class=""><div style="font-family:Helvetica;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" class=""><div class="">Linux vm1 3.10.41 #2 SMP PREEMPT Sun May 17 23:52:27 WIB 2015 x86_64 x86_64 x86_64 GNU/Linux<br class=""><br class=""></div><div class="">it's right?<br class=""></div><div class="">so in my 2 vcpu (in root vm1 n vm2) i have done install LITMUS<br class=""><br class=""></div><div class="">in root vm1 n vm2 (after done install LITMUS), i check /proc/litmus and ls :<br class="">root@vm1:/proc/litmus# ls<br class="">active_plugin cpus domains plugins stats<br class=""></div></div></div></blockquote><div class=""><br class=""></div></span><div class="">Didn’t you say in your previous email that you are getting the message “no such file or directory”? Now it looks ok. So it should be working…</div><span class=""><br class=""><blockquote type="cite" class=""><div class=""><div style="font-family:Helvetica;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" class=""><div class=""></div><div class="">each vcpu (in root vm1 n vm2) after done install LITMUS, i instal liblitmus n ft_tools,<span class=""> </span><br class="">so in my 2 vcpu (in root vm1 n vm2) : ls<br class=""></div><div class="">Desktop litmus-rtxen<br class="">ft_tools liblitmus<br class=""><br class=""></div><div class="">it's right?<br class=""><br class=""><br class=""></div><div class="">could u tell me where is my wrong step n why i cant choose the active plugin?<br class=""></div><div class="">veryn thanks for your help,<br class=""></div></div></div></blockquote></span></div><br class=""><div class="">Sorry, your emails are very hard to parse. Unless you provide more detailed and consistent information, I’m afraid I won’t be able to help much.</div><div class=""><br class=""></div></div></blockquote></div></div></div></blockquote><br class=""></div><div>Ok, now that we’ve established that /proc/litmus actually exists, let’s try this again:</div><div><br class=""></div><div><span style="font-family: Menlo-Regular; font-size: 12px;" class="">What’s the output of the following commands?</span><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><span style="font-family: Menlo-Regular; font-size: 12px;" class="">1) ls -lR /proc/litmus</span><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><span style="font-family: Menlo-Regular; font-size: 12px;" class="">2) cat /proc/litmus/plugins/loaded</span><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><span style="font-family: Menlo-Regular; font-size: 12px;" class="">3) echo PSN-EDF > /proc/litmus/active_plugin; cat /proc/litmus/active_plugin</span><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><span style="font-family: Menlo-Regular; font-size: 12px;" class="">If step 3 fails, are there any debug messages in the kernel log?</span><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><br style="font-family: Menlo-Regular; font-size: 12px;" class=""><span style="font-family: Menlo-Regular; font-size: 12px;" class="">4) setsched Linux; setsched GSN-EDF; setsched Linux; setsched PSN-EDF</span></div><div><span style="font-family: Menlo-Regular; font-size: 12px;" class=""><br class=""></span></div><div><span style="font-family: Menlo-Regular; font-size: 12px;" class="">- Björn</span></div><div><span style="font-family: Menlo-Regular; font-size: 12px;" class=""><br class=""></span></div><br class=""></body></html>