Hi all. I just wanted to report about a trace in dmesg output at latency-histogram start wit 2.8.2 and 4.19.195-rtai-amd64 kernel. I can make it to work almost flawlessly by using taskset 2 latency-histogram. Just some more latency.
Please let me know if I can provide some more info Here it is: [ 99.888347] I-pipe: head domain RTAI registered. [ 99.888460] WARNING: CPU: 0 PID: 1611 at arch/x86/kernel/apic/msi.c:106 msi_set_affinity+0x120/0x150 [ 99.888461] Modules linked in: rtai_hal(+) snd_hda_codec_hdmi snd_hda_intel snd_hda_codec radeon ttm drm_kms_helper drm snd_hda_core hp_wmi snd_hwdep sparse_keymap rfkill snd_pcm wmi_bmof snd_timer snd drm_panel_orientation_quirks i2c_algo_bit evdev fb_sys_fops syscopyarea sysfillrect sysimgblt pcspkr serio_raw edac_mce_amd soundcore k8temp wmi button ext4 crc32c_generic crc16 mbcache jbd2 fscrypto sg sd_mod psmouse i2c_piix4 ohci_pci floppy ahci libahci libata scsi_mod tg3 libphy ehci_pci ohci_hcd ehci_hcd usbcore [ 99.888474] CPU: 0 PID: 1611 Comm: insmod Tainted: G W 4.19.195-rtai-amd64 #5 [ 99.888475] Hardware name: Hewlett-Packard HP Compaq dc5850 Microtower/3029h, BIOS 786F6 v01.09 04/09/2008 [ 99.888476] I-pipe domain: Linux [ 99.888476] RIP: 0010:msi_set_affinity+0x120/0x150 [ 99.888477] Code: 83 c7 20 c1 e7 04 ff 50 18 0f a3 e8 73 0a 48 8b 43 18 48 89 df ff 50 60 48 83 c4 08 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 <0f> 0b 48 89 ee 48 89 df e8 e3 fd ff ff eb df 65 48 c7 04 d5 20 41 [ 99.888478] RSP: 0018:ffffc90000177bb8 EFLAGS: 00010297 [ 99.888479] RAX: 0000000000000000 RBX: ffff88807c84c828 RCX: 0000000000000000 [ 99.888480] RDX: ffff88807c84c800 RSI: 0000000000000037 RDI: 0000000000000000 [ 99.888481] RBP: ffff888079e08440 R08: 0000000000000000 R09: 0000000000000000 [ 99.888482] R10: 0000000000000040 R11: 0000000000000000 R12: 0000000000000000 [ 99.888482] R13: ffffc90000177bf8 R14: 0000000000000001 R15: ffff888079e089c0 [ 99.888483] FS: 00007ff87fc1c4c0(0000) GS:ffff88807da00000(0000) knlGS:0000000000000000 [ 99.888484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.888485] CR2: 00007fd540ded0b0 CR3: 000000007aea1000 CR4: 00000000000006f0 [ 99.888485] Call Trace: [ 99.888486] ? irq_msi_compose_msg+0x50/0x50 [ 99.888486] ? ipipe_set_irq_affinity+0x78/0xa0 [ 99.888487] ? rt_assign_irq_to_cpu+0x6e/0xa0 [rtai_hal] [ 99.888488] ? __rtai_hal_init+0x1ec/0x220 [rtai_hal] [ 99.888489] ? rt_free_timers+0x40/0x40 [rtai_hal] [ 99.888489] ? do_one_initcall+0x3f/0x170 [ 99.888490] ? free_unref_page_commit+0x8a/0x100 [ 99.888490] ? kmem_cache_alloc+0x80/0xf0 [ 99.888491] ? do_init_module+0x50/0x1f0 [ 99.888492] ? load_module+0x1b07/0x1cf0 [ 99.888492] ? __do_sys_finit_module+0x96/0xb0 [ 99.888493] ? __do_sys_finit_module+0x96/0xb0 [ 99.888494] ? do_syscall_64+0x59/0x1e0 [ 99.888494] ? __ipipe_trap_prologue+0xef/0x210 [ 99.888495] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 99.888496] ---[ end trace 3f6c88e031e59fea ]--- [ 99.888568] RTAI[hal]: mounted. ISOL_CPUS_MASK: 2. [ 99.888571] SYSINFO - # CPUs: 2, TIMER NAME: 'lapic', TIMER IRQ: 4355, TIMER FREQ: 12466489, CLOCK NAME: 'tsc', CLOCK FREQ: 2293835000, CPU FREQ: 2293835000, LINUX TIMER IRQ: 4355. [ 99.947127] RTAI[malloc]: global heap size = 2097152 bytes, <BSD>. [ 99.947164] kstacks pool size = 524288 bytes [ 99.947165] RTAI[sched]: hard timer type/freq = lapic/12466489(Hz) [ 99.947166] linear timed lists. [ 99.947167] RTAI[sched]: Linux timer freq = 250 (Hz), TimeBase freq = 2293835000 hz. [ 99.947168] RTAI[sched]: timer setup = 80 ns, resched latency = 0 ns. [ 100.007461] USERMODE CHECK: OK. [ 100.007465] USERMODE CHECK PROVIDED (ns): KernelLatency 741, UserLatency 968. [ 100.007467] FINAL CALIBRATION SUMMARY (ns): KernelLatency 741, UserLatency 968. [ 100.036909] RTAI[math]: loaded, using musl libm. I guess there is some MSI quirk on this system. Complete dmesg output attached Best wishes _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
