<div dir="ltr"><div><div><br></div>Hi Glenn, <br><br></div>Here is a segment of my syslog : (my system was not connected with network i.e. LAN and also there was no external USB device connected during the experiment ) <br>
<div><div><div><div><br><br>May 3 15:30:31 lubdhok-lab kernel: [ 5897.872575] Switching to LITMUS^RT plugin Linux.<br>May 3 15:30:32 lubdhok-lab kernel: [ 5898.581825] virtuoso-t[15646]: segfault at ffffffffffffffff ip 0000000000939d75 sp 00007f1771a7ed50 error 7 in virtuoso-t[400000+b09000]<br>
May 3 15:30:33 lubdhok-lab kernel: [ 5900.345664] Enabling feather-trace event 501.<br>May 3 15:30:33 lubdhok-lab kernel: [ 5900.345669] ft_enable_event: enabled 1 events<br>...................................................................................................................<br>
...................................................................................................................<br>May 3 15:30:33 lubdhok-lab kernel: [ 5900.350830] sched_trace kfifo with buffer starting at: 0xffffffff81aac818<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5901.353520] C-EDF: Activate Plugin, cluster configuration = 2<br>May 3 15:31:13 lubdhok-lab kernel: [ 5901.353527] C-EDF: 2 cluster(s) of size = 2<br>May 3 15:31:13 lubdhok-lab kernel: [ 5901.353534] CPU = 0, shared cpu(s) = 0-1<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5901.353539] CPU = 2, shared cpu(s) = 2-3<br>May 3 15:31:13 lubdhok-lab kernel: [ 5901.353543] Switching to LITMUS^RT plugin C-EDF.<br>May 3 15:31:13 lubdhok-lab kernel: [ 5904.360103] Setting up rt task parameters for process 15681.<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5904.361164] Setting up rt task parameters for process 15682.<br>May 3 15:31:13 lubdhok-lab kernel: [ 5904.362549] Setting up rt task parameters for process 15683.<br>..................................................................................................................................<br>
..................................................................................................................................<br>May 3 15:31:13 lubdhok-lab kernel: [ 5905.421205] time stamp buffer: trying to allocate 8388608 time stamps.<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5905.448210] Enabling feather-trace event 100.<br>May 3 15:31:13 lubdhok-lab kernel: [ 5905.448216] ft_enable_event: enabled 1 events<br>May 3 15:31:13 lubdhok-lab kernel: [ 5905.448220] Enabling feather-trace event 101.<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5905.448222] ft_enable_event: enabled 2 events<br><br>..................................................................................................................................<br>
..................................................................................................................................<br>May 3 15:31:13 lubdhok-lab kernel: [ 5905.448273] Enabling feather-trace event 41.<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5905.448275] ft_enable_event: enabled 1 events<br>May 3 15:31:13 lubdhok-lab kernel: [ 5905.448277] Enabling feather-trace event 208.<br><b><span style="color:rgb(204,0,0)">May 3 15:31:13 lubdhok-lab kernel: [ 5905.448279] ft_enable_event: enabled 1 events<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678342] BUG: soft lockup - CPU#1 stuck for 22s! [rtspin:15698]<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678345] BUG: soft lockup - CPU#0 stuck for 22s! [rtspin:15701]</span></b><br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678355] Modules linked in: hid_generic usbhid<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678356] Modules linked in: hid_generic usbhid<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678362] hid ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack hid ipt_MASQUERADE iptable_nat<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678384] nf_conntrack ipt_REJECT<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678390] nf_nat_ipv4<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678396] xt_CHECKSUM iptable_mangle xt_tcpudp<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678398] nf_nat<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678405] bridge stp llc ip6table_filter<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678406] nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678412] ip6_tables iptable_filter ip_tables ebtable_nat nf_conntrack ipt_REJECT xt_CHECKSUM<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678425] ebtables x_tables<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678431] iptable_mangle<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678439] rfcomm bnep bluetooth parport_pc<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678439] xt_tcpudp bridge stp<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678445] ppdev llc ip6table_filter ip6_tables<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678453] binfmt_misc arc4<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678458] iptable_filter<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678464] brcmsmac cordic brcmutil<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678466] ip_tables<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678473] mac80211 cfg80211 snd_hda_codec_hdmi<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678474] ebtable_nat<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678481] snd_hda_codec_conexant snd_hda_intel intel_powerclamp<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678483] ebtables<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678489] snd_hda_codec coretemp kvm_intel<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678491] x_tables<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678497] kvm joydev snd_hwdep<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678499] rfcomm<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678507] snd_pcm snd_page_alloc uvcvideo snd_seq_midi<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678507] bnep bluetooth parport_pc<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678513] snd_seq_midi_event snd_rawmidi snd_seq videobuf2_vmalloc videobuf2_memops videobuf2_core mei_me videodev psmouse mei ppdev binfmt_misc arc4<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678538] snd_seq_device snd_timer<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678544] brcmsmac<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678550] bcma snd lpc_ich<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678551] cordic<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678557] ideapad_laptop serio_raw lp<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678559] brcmutil<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678565] intel_ips sparse_keymap soundcore<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678567] mac80211<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678573] parport mac_hid microcode<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678575] cfg80211<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678581] i915 i2c_algo_bit drm_kms_helper<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678583] snd_hda_codec_hdmi<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678590] drm r8169 ahci libahci<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678590] snd_hda_codec_conexant snd_hda_intel intel_powerclamp<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678597] mii wmi video<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678605] snd_hda_codec<4>[ 5929.678608] CPU: 0 PID: 15701 Comm: rtspin Not tainted 3.10.5-litmus-rt-april-155192-g5b50be0 #4<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678612] Hardware name: LENOVO 0679 /Base Board Product Name, BIOS 29CN38WW(V2.15) 01/28/2011<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678615] task: ffff8800a4900000 ti: ffff8800b6e04000 task.ti: ffff8800b6e04000<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678629] RIP: 0010:[<ffffffff816eae19>] [<ffffffff816eae19>] _raw_spin_unlock_irqrestore+0x19/0x50<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678632] RSP: 0018:ffff8800b6e05ea0 EFLAGS: 00000296<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678635] RAX: 0000000000000000 RBX: ffffffff816eadda RCX: 000000000000c670<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678638] RDX: 0000000000000000 RSI: 0000000000000296 RDI: 0000000000000296<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678641] RBP: ffff8800b6e05ea8 R08: 0000000000000000 R09: 0000000000000000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678644] R10: 0000000000000000 R11: 0000000000000293 R12: ffffffff81375b95<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678647] R13: ffff8800b6e05e28 R14: ffff8800a4900000 R15: ffff880137c1a900<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678651] FS: 00007f7bcd339740(0000) GS:ffff880137c00000(0000) knlGS:0000000000000000<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678654] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678657] CR2: 00007fd7800bc000 CR3: 00000000a08a3000 CR4: 00000000000007f0<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678660] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678663] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678665] Stack:<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678669] ffff8800a4900000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678671] coretemp<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678677] ffff8800b6e05ed8 ffffffff8108efef 0000000000000296<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678679] kvm_intel kvm joydev<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678685] ffff8800b6e05f20 00007fff42e06b78 ffff8800b6e05f60 ffff8800b6e05f08<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678695] ffffffff81081175 0000000000000000 ffff8800b6e05f08 ffffffff81080e70<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678705] Call Trace:<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678707] snd_hwdep [<ffffffff8108efef>] task_sched_runtime+0x4f/0xa0<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678724] [<ffffffff81081175>] cpu_clock_sample+0x65/0xa0<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678729] [<ffffffff81080e70>] ? sample_to_timespec+0x50/0x60<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678735] [<ffffffff8108123c>] posix_cpu_clock_get+0x8c/0x150<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678737] snd_pcm snd_page_alloc<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678741] [<ffffffff81081313>] thread_cpu_clock_get+0x13/0x20<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678747] [<ffffffff8107f635>] SyS_clock_gettime+0x45/0xa0<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678753] [<ffffffff816f2cdd>] system_call_fastpath+0x1a/0x1f<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678761] Code: uvcvideo snd_seq_midi snd_seq_midi_event<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678769] 5d c3 e8 0b <br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678776] snd_rawmidi snd_seq videobuf2_vmalloc videobuf2_memops videobuf2_core mei_me videodev psmouse mei snd_seq_device snd_timer bcma snd lpc_ich ideapad_laptop serio_raw lp intel_ips sparse_keymap soundcore parport mac_hid microcode i915 i2c_algo_bit drm_kms_helper drm r8169 ahci libahci mii wmi video<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678842] CPU: 1 PID: 15698 Comm: rtspin Not tainted 3.10.5-litmus-rt-april-155192-g5b50be0 #4<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678845] Hardware name: LENOVO 0679 /Base Board Product Name, BIOS 29CN38WW(V2.15) 01/28/2011<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678848] task: ffff88012fe69870 ti: ffff8800612e0000 task.ti: ffff8800612e0000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678851] RIP: 0010:[<ffffffff816f2cbd>] [<ffffffff816f2cbd>] system_call_after_swapgs+0x5a/0x60<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678858] RSP: 0018:ffff8800612e1f88 EFLAGS: 00000246<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678862] RAX: 00000000000000e4 RBX: 00000000fffffffe RCX: 00007fff765cc7d2<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678865] RDX: 00000000006091c0 RSI: 00007fff764cf2b0 RDI: 0000000000000003<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678868] RBP: 00007fff764cf290 R08: 0000000000000000 R09: 000000005364ef97<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678871] R10: 0000000000000001 R11: 0000000000000293 R12: ffff8800612e1f08<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678874] R13: ffff8800612e1fd8 R14: ffffffff81081175 R15: ffff8800612e1f08<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678877] FS: 00007ff4adcc5740(0000) GS:ffff880137c40000(0000) knlGS:0000000000000000<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678883] CR2: 00007f12c0472be0 CR3: 00000000a2398000 CR4: 00000000000007e0<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678886] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678889] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678891] Stack:<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678894] 0000000000000293 0000000000000001 000000005364ef97 0000000000000000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678903] 00000000000000e4 00000000000578d8 00000000006091c0 00007fff764cf2b0<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678913] 0000000000000003 00000000000000e4 00007fff765cc7d2 0000000000000033<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678922] Call Trace:<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678925] Code: ef ff ff 5d c3 <br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.678935] 44 66 0f <br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.678940] 24 20 4c 89 44 24 18 4c 89 4c 24 10 4c 89 54 24 08 4c 89 1c 24 48 89 44 24 48 48 89 4c 24 50 f7 84 24 88 e0 ff ff d1 01 08 10 <0f> 85 4b 01 00 00 25 ff ff ff bf 3d 1e 02 00 00 0f 87 c2 00 00 <br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.679051] 1f 84 00 00 00 00 00 66 66 66 66 90 55 48 89 e5 53 48 89 f3 e8 2e ab 95 ff 66 90 48 89 df 57 9d <66> 66 90 66 90 bf 01 00 00 00 e8 48 40 00 00 65 48 8b 04 25 30 <br>
<b><span style="color:rgb(204,0,0)">May 3 15:31:13 lubdhok-lab kernel: [ 5929.692344] BUG: soft lockup - CPU#2 stuck for 22s! [rtspin:15700]</span></b><br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692349] Modules linked in: hid_generic usbhid hid ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables rfcomm bnep bluetooth parport_pc ppdev binfmt_misc arc4 brcmsmac cordic brcmutil mac80211 cfg80211 snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel intel_powerclamp snd_hda_codec coretemp kvm_intel kvm joydev snd_hwdep snd_pcm snd_page_alloc uvcvideo snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq videobuf2_vmalloc videobuf2_memops videobuf2_core mei_me videodev psmouse mei snd_seq_device snd_timer bcma snd lpc_ich ideapad_laptop serio_raw lp intel_ips sparse_keymap soundcore parport mac_hid microcode i915 i2c_algo_bit drm_kms_helper drm r8169 ahci libahci mii wmi video<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692509] CPU: 2 PID: 15700 Comm: rtspin Not tainted 3.10.5-litmus-rt-april-155192-g5b50be0 #4<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692513] Hardware name: LENOVO 0679 /Base Board Product Name, BIOS 29CN38WW(V2.15) 01/28/2011<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692517] task: ffff8800a49061c0 ti: ffff8800a08dc000 task.ti: ffff8800a08dc000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692520] RIP: 0033:[<0000000000401d0b>] [<0000000000401d0b>] 0x401d0a<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692531] RSP: 002b:00007fff061516f0 EFLAGS: 00000212<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692534] RAX: 0000000000000000 RBX: ffffffff816f2cdd RCX: 000000000003d33d<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692538] RDX: 0000000000608280 RSI: 000000002e9e7770 RDI: 000000000003d33e<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692541] RBP: 00000000ffffffff R08: 0000000000000000 R09: 000000005364ef97<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692545] R10: 0000000000000002 R11: 0000000000000002 R12: 0000000007a70000<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692548] R13: 00000000313d1031 R14: 0000000000000002 R15: ffffffff8107f659<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692552] FS: 00007fafa3cca740(0000) GS:ffff880137c80000(0000) knlGS:0000000000000000<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692556] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692559] CR2: 00007f26500d0000 CR3: 00000000a0c62000 CR4: 00000000000007e0<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692562] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.692566] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.692568] <br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706347] BUG: soft lockup - CPU#3 stuck for 22s! [rtspin:15713]<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706351] Modules linked in: hid_generic usbhid hid ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables rfcomm bnep bluetooth parport_pc ppdev binfmt_misc arc4 brcmsmac cordic brcmutil mac80211 cfg80211 snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel intel_powerclamp snd_hda_codec coretemp kvm_intel kvm joydev snd_hwdep snd_pcm snd_page_alloc uvcvideo snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq videobuf2_vmalloc videobuf2_memops videobuf2_core mei_me videodev psmouse mei snd_seq_device snd_timer bcma snd lpc_ich ideapad_laptop serio_raw lp intel_ips sparse_keymap soundcore parport mac_hid microcode i915 i2c_algo_bit drm_kms_helper drm r8169 ahci libahci mii wmi video<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706506] CPU: 3 PID: 15713 Comm: rtspin Not tainted 3.10.5-litmus-rt-april-155192-g5b50be0 #4<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706510] Hardware name: LENOVO 0679 /Base Board Product Name, BIOS 29CN38WW(V2.15) 01/28/2011<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706514] task: ffff8800b6c00000 ti: ffff88002ad10000 task.ti: ffff88002ad10000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706517] RIP: 0033:[<0000000000401d09>] [<0000000000401d09>] 0x401d08<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706525] RSP: 002b:00007fff81a0f440 EFLAGS: 00000206<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706528] RAX: 0000000000000000 RBX: ffffffff816f2cdd RCX: 00000000000513f2<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706532] RDX: 0000000000606c14 RSI: 00000000216733e8 RDI: 00000000000513f3<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706535] RBP: 00000000ffffffff R08: 0000000000000000 R09: 000000005364ef97<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706538] R10: 0000000000000003 R11: 0000000000000003 R12: 000000007a8dc000<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706542] R13: 000000002d2f92d9 R14: 0000000000000003 R15: ffffffff8107f659<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706546] FS: 00007f257d6e5740(0000) GS:ffff880137cc0000(0000) knlGS:0000000000000000<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706553] CR2: 00007f5264f35328 CR3: 00000000a0896000 CR4: 00000000000007e0<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706556] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br>May 3 15:31:13 lubdhok-lab kernel: [ 5929.706560] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5929.706562] <br>May 3 15:31:13 lubdhok-lab kernel: [ 5937.897291] Disabling feather-trace event 100.<br>May 3 15:31:13 lubdhok-lab kernel: [ 5937.897297] ft_disable_event: disabled 1 events<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5937.897299] Disabling feather-trace event 101.<br>May 3 15:31:13 lubdhok-lab kernel: [ 5937.897301] ft_disable_event: disabled 2 events<br>May 3 15:31:13 lubdhok-lab kernel: [ 5937.897303] Disabling feather-trace event 106.<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5937.897305] ft_disable_event: disabled 1 events<br>May 3 15:31:13 lubdhok-lab kernel: [ 5937.897308] Disabling feather-trace event 107.<br>May 3 15:31:13 lubdhok-lab kernel: [ 5937.897310] ft_disable_event: disabled 1 events<br>
May 3 15:31:13 lubdhok-lab kernel: [ 5937.897312] Disabling feather-trace event 102.<br><br><br></div><div>Thanks in advance <br><br></div><div>Sanjib<br></div><div><br></div></div></div></div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Sat, May 3, 2014 at 4:36 PM, Sanjib Das <span dir="ltr"><<a href="mailto:cnt.sanjib@googlemail.com" target="_blank">cnt.sanjib@googlemail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div><div><div><div><div><div>Hi Glenn,<br><br></div>I have managed to generate the the experimental test cases and also parse and plot it for G-EDF,P-EDF and C-EDF with the flowing command <br>:./gen_exps.py -f tasks=5,10,15,20,25 cpus=2 release_master=False P-EDF G-EDF C-EDF<br>
and also with <br>./gen_exps.py -f tasks=`seq -s, 10 2 50` cpus=2 release_master=False P-EDF G-EDF C-EDF<br>./gen_exps.py -f tasks=`seq -s, 5 5 50` cpus=2 release_master=False P-EDF G-EDF C-EDF<br><br></div>Bu the strange thing where I am getting lost that when I generate the tasksets with <br>
<br>./gen_exps.py -f tasks=`seq -s, 5 5 100` cpus=2 release_master=False P-EDF G-EDF C-EDF <br></div>my system stalls like as default (previous email).<br><br></div>Can you please give me some clue..?<br></div>Thanks in Advance <br>
<span class="HOEnZb"><font color="#888888">
<br></font></span></div><span class="HOEnZb"><font color="#888888">Sanjib<br><div><div><div><div><div><br></div></div></div></div></div></font></span></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br>
<br><div class="gmail_quote">On Fri, May 2, 2014 at 11:28 PM, Sanjib Das <span dir="ltr"><<a href="mailto:cnt.sanjib@googlemail.com" target="_blank">cnt.sanjib@googlemail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div>Hi Glenn,<br>Thank you very much for the suggestion. But before need another suggestion :<br>
</div>I got this output by generating experiment with default values and the run script could not make it simulate.<br>
<br><span style="color:rgb(255,0,0)">root@lubdhok-<b>lab:~/littest/experiment-scripts# ./gen_exps.py </b></span><br>Creating experiments with G-EDF generator...<br>Creating experiments with P-EDF generator...<br>Creating experiments with C-EDF generator...<br>
Experiments saved in /home/sdas/littest/experiment-scripts/exps.<br><span style="color:rgb(255,0,0)"><b>root@lubdhok-lab:~/littest/experiment-scripts# ./run_exps.py </b></span><br>Reading schedules from exps/*.<br>[Exp GSN-EDF_tasks=16_release-master=False]: Loading experiment 1 of 28.<br>
[Exp GSN-EDF_tasks=16_release-master=False]: Enabling Logger<br>[Exp GSN-EDF_tasks=16_release-master=False]: Writing 0 proc entries<br>[Exp GSN-EDF_tasks=16_release-master=False]: Starting 1 regular tracers<br>[Exp GSN-EDF_tasks=16_release-master=False]: Switching to GSN-EDF<br>
[Exp GSN-EDF_tasks=16_release-master=False]: Starting 16 tasks<br>[Exp GSN-EDF_tasks=16_release-master=False]: Sleeping until tasks are ready for release...<br>[Exp GSN-EDF_tasks=16_release-master=False]: Starting 0 released tracers<br>
[Exp GSN-EDF_tasks=16_release-master=False]: Releasing 16 tasks<br>[Exp GSN-EDF_tasks=16_release-master=False]: Waiting for program to finish...<br>[Exp GSN-EDF_tasks=16_release-master=False]: Stopping exact tracers<br>[Exp GSN-EDF_tasks=16_release-master=False]: Saving results in /home/sdas/littest/experiment-scripts/run-data/sched=GSN-EDF_tasks=16_release-master=False<br>
[Exp GSN-EDF_tasks=16_release-master=False]: Stopping regular tracers<br>[Exp GSN-EDF_tasks=16_release-master=False]: Switching back to Linux scheduler<br>[Exp GSN-EDF_tasks=16_release-master=False]: Experiment done!<br>
[Exp C-EDF_tasks=8_release-master=True]: Loading experiment 2 of 28.<br>
[Exp C-EDF_tasks=8_release-master=True]: Enabling Logger<br>[Exp C-EDF_tasks=8_release-master=True]: Writing 2 proc entries<br>[Exp C-EDF_tasks=8_release-master=True]: Starting 1 regular tracers<br>[Exp C-EDF_tasks=8_release-master=True]: Switching to C-EDF<br>
[Exp C-EDF_tasks=8_release-master=True]: Starting 8 tasks<br>[Exp C-EDF_tasks=8_release-master=True]: Sleeping until tasks are ready for release...<br><b><span style="color:rgb(255,0,0)">Non-zero return 234: /home/sdas/littest/liblitmus/rtspin -w -p 3 34 100 30<br>
Non-zero return 234: /home/sdas/littest/liblitmus/rtspin -w -p 3 13 50 30<br>[Exp C-EDF_tasks=8_release-master=True]: Re-released 6 tasks<br>[Exp C-EDF_tasks=8_release-master=True]: Killing all tasks<br>[Exp C-EDF_tasks=8_release-master=True]: Stopping regular tracers<br>
[Exp C-EDF_tasks=8_release-master=True]: Switching back to Linux scheduler<br>echo: write error: Device or resource busy<br>Failed experiment C-EDF_tasks=8_release-master=True<br>Task 0 failed with status: 234<br>Task 0 failed with status: 234</span></b><br>
Check dmesg, tmp/exec-out.txt, and tmp/exec-err.txt<br>[Exp PSN-EDF_tasks=4_release-master=False]: Loading experiment 3 of 28.<br>[Exp PSN-EDF_tasks=4_release-master=False]: Switching back to Linux scheduler<br>echo: write error: Device or resource busy<br>
System is corrupted! Fix state before continuing.<br>Scheduler is C-EDF, cannot switch to Linux!<br>6 real-time tasks still running!<br>no crontab for root<br><span style="color:rgb(255,0,0)">Experiments ran: 3 of 28</span><br>
Successful: 1<br> Failed: 2<br> Already Done: 0<br> Invalid Environment: 0<br>Successful experiment data saved in run-data.<br>root@lubdhok-lab:~/littest/experiment-scripts# <br><br>
<br>
</div>And always I have to reboot my OS kubuntu (root@lubdhok-lab:~/littest/experiment-scripts# uname -a<br>Linux lubdhok-lab 3.10.5-litmus-rt-155192-g5b50be0 #3 SMP PREEMPT Fri Apr 25 11:09:11 CEST 2014 x86_64 x86_64 x86_64 GNU/Linux)<br>
<br></div>Thanks in advance<br></div>Sanjib<br><div><div><div><br></div></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Tue, Apr 22, 2014 at 6:06 PM, Glenn Elliott <span dir="ltr"><<a href="mailto:gelliott@cs.unc.edu" target="_blank">gelliott@cs.unc.edu</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div style="word-wrap:break-word"><div><div><br><div><div>On Apr 22, 2014, at 8:15 AM, Sanjib Das <<a href="mailto:cnt.sanjib@googlemail.com" target="_blank">cnt.sanjib@googlemail.com</a>> wrote:</div>
<br><blockquote type="cite"><div dir="ltr"><div><div><div><div><div>Dear Everyone,<br><br></div>I am using the experiment script from the following link <a href="https://github.com/LITMUS-RT/experiment-scripts" target="_blank">https://github.com/LITMUS-RT/experiment-scripts</a> to generate the synthetic tasks and was able to simulate for PSN-EDF. <br>
<br></div>Can anyone help me how can I generate a reasonable about of taskset for simulation using PFAIR scheduling algorithm(Implementation of the PD^2 pfair scheduling algorithm. This implementation realizes "early releasing), provided in LIRMUS-RT version 2013.1.<br>
<br></div>I would be glade with any information that leads me to simulate the mentioned algorithm above.<br><br></div>Regards<br></div>Sanjib<br></div></blockquote><br></div><div><br></div></div></div><div>Hi Sanjib,</div>
<div><br></div>In response to your other email on the availability of PFAIR, it’s in the latest Litmus kernel (code: <a href="https://github.com/LITMUS-RT/litmus-rt/blob/master/litmus/sched_pfair.c" target="_blank">https://github.com/LITMUS-RT/litmus-rt/blob/master/litmus/sched_pfair.c</a>). Just make sure that you properly configure the kernel at compile-time to get it. As you might see in litmus/Kconfig (<a href="https://github.com/LITMUS-RT/litmus-rt/blob/master/litmus/Kconfig#L15" target="_blank">https://github.com/LITMUS-RT/litmus-rt/blob/master/litmus/Kconfig#L15</a>), CONFIG_HIGH_RES_TIMERS and CONFIG_HZ_PERIODIC must be set and CONFIG_HZ must == 1000.<div>
<br></div><div>Regarding the experiment-scripts, currently there are no task-set generators for pfair. I believe you could quickly copy and modify the C-EDF generator to create task sets for pfair (this is because the pfair plugin can be clustered along cache-level boundaries, just like C-EDF).</div>
<div><br></div><div>My suggestion:</div><div>Step 1: Replicate the CedfGenerator (<a href="https://github.com/LITMUS-RT/experiment-scripts/blob/master/gen/edf_generators.py#75" target="_blank">https://github.com/LITMUS-RT/experiment-scripts/blob/master/gen/edf_generators.py#75</a>), naming it CpfairGenerator or some such, and make the appropriate changes to make it use pfair.</div>
<div>Step 2: Add your new generator to gen/__init__.py (<a href="https://github.com/LITMUS-RT/experiment-scripts/blob/master/gen/__init__.py" target="_blank">https://github.com/LITMUS-RT/experiment-scripts/blob/master/gen/__init__.py</a>)</div>
<div>Step 3: I think that’s it. You should be able to follow the tutorial for gen_exps.py here: <a href="https://github.com/LITMUS-RT/experiment-scripts" target="_blank">https://github.com/LITMUS-RT/experiment-scripts</a></div>
<div><br></div><div>These changes should take more than 30 minutes to add and test (assuming that I haven’t missed anything). I’d be happy to accept a patch that adds pfair functionality.</div><span><font color="#888888"><div>
<br></div><div>-Glenn</div></font></span></div><br></div></div>_______________________________________________<br>
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