Hello , I am new to LTTng usage. When trying to run lttng 2.0.4 for tracing my kernel I get the following issue -
root@am335x-evm:/media/mmcblk0p1/lttng_bin/bin# ./arm-arago-linux-gnueabi-lttng start [ 1775.934997] LTTng: Failure to write metadata to buffers (timeout) Error: Starting kernel trace failed I checked the session daemon for startup issues and got the following - ./arm-arago-linux-gnueabi-lttng- sessiond -vvv --consumerd32-path /media/mmcblk0p1/lttng_bin/lib/lttng/libexec root@am335x-evm:/media/mmcblk0p1/lttng_bin/bin# ./arm-arago-linux-gnueabi-lttng- sessiond -vvv --consumerd32-path /media/mmcblk0p1/lttng_bin/lib/lttng/libexec DEBUG3: Creating LTTng run directory: /var/run/lttng [in create_lttng_rundir() a t main.c:4317] DEBUG2: Kernel consumer err path: /var/run/lttng/kconsumerd/error [in main() at main.c:4560] DEBUG2: Kernel consumer cmd path: /var/run/lttng/kconsumerd/command [in main() a t main.c:4562] DEBUG1: Client socket path /var/run/lttng/client-lttng-sessiond [in main() at ma in.c:4609] DEBUG1: Application socket path /var/run/lttng/apps-lttng-sessiond [in main() at main.c:4610] DEBUG1: LTTng run directory path: /var/run/lttng [in main() at main.c:4611] DEBUG2: UST consumer 32 bits err path: /var/run/lttng/ustconsumerd32/error [in m ain() at main.c:4620] DEBUG2: UST consumer 32 bits cmd path: /var/run/lttng/ustconsumerd32/command [in main() at main.c:4622] DEBUG2: UST consumer 64 bits err path: /var/run/lttng/ustconsumerd64/error [in m ain() at main.c:4631] DEBUG2: UST consumer 64 bits cmd path: /var/run/lttng/ustconsumerd64/command [in main() at main.c:4633] DEBUG2: Creating consumer directory: /var/run/lttng/kconsumerd [in set_consumer_ sockets() at main.c:4359] DEBUG1: Modprobe successfully lttng-tracer [in modprobe_lttng_control() at modpr obe.c:163] DEBUG2: Kernel tracer version validated (major version 2) [in kernel_validate_ve rsion() at kernel.c:675] DEBUG1: Modprobe successfully lttng-ftrace [in modprobe_lttng_data() at modprobe .c:199] DEBUG1: Modprobe successfully lttng-kprobes [in modprobe_lttng_data() at modprob e.c:199] DEBUG1: Modprobe successfully lttng-kretprobes [in modprobe_lttng_data() at modp robe.c:199] DEBUG1: Modprobe successfully lttng-lib-ring-buffer [in modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-ring-buffer-client-discard [in modprobe_lttn g_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-ring-buffer-client-overwrite [in modprobe_lt tng_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-ring-buffer-metadata-client [in modprobe_ltt ng_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-ring-buffer-client-mmap-discard [in modprobe _lttng_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-ring-buffer-client-mmap-overwrite [in modpro be_lttng_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-ring-buffer-metadata-mmap-client [in modprob e_lttng_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-lttng [in modprobe_lttng_data() at mod probe.c:199] DEBUG1: Modprobe successfully lttng-types [in modprobe_lttng_data() at modprobe. c:199] DEBUG1: Modprobe successfully lttng-probe-block [in modprobe_lttng_data() at mod probe.c:199] DEBUG1: Modprobe successfully lttng-probe-irq [in modprobe_lttng_data() at modpr obe.c:199] DEBUG1: Modprobe successfully lttng-probe-kvm [in modprobe_lttng_data() at modpr obe.c:199] DEBUG1: Modprobe successfully lttng-probe-sched [in modprobe_lttng_data() at mod probe.c:199] DEBUG1: Modprobe successfully lttng-probe-signal [in modprobe_lttng_data() at mo dprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-statedump [in modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-timer [in modprobe_lttng_data() at mod probe.c:199] DEBUG1: Kernel tracer fd 6 [in init_kernel_tracer() at main.c:1887] DEBUG2: Creating consumer directory: /var/run/lttng/ustconsumerd64 [in set_consu mer_sockets() at main.c:4359] DEBUG2: Creating consumer directory: /var/run/lttng/ustconsumerd32 [in set_consu mer_sockets() at main.c:4359] DEBUG1: Signal handler set for SIGTERM, SIGPIPE and SIGINT [in set_signal_handle r() at main.c:4451] Warning: No tracing group detected DEBUG1: epoll set max size is 95800 [in compat_epoll_set_max_size() at compat-ep oll.c:224] DEBUG1: Thread manage kernel started [in thread_manage_kernel() at main.c:876] DEBUG1: Updating kernel poll set [in update_kernel_poll() at main.c:748] DEBUG1: Thread kernel polling on 2 fds [in thread_manage_kernel() at main.c:905] DEBUG1: [thread] Manage application started [in thread_manage_apps() at main.c:1 179] DEBUG1: Apps thread polling on 2 fds [in thread_manage_apps() at main.c:1200] DEBUG1: [thread] Manage application registration started [in thread_registration _apps() at main.c:1392] DEBUG1: Notifying applications of session daemon state: 1 [in notify_ust_apps() at main.c:687] DEBUG1: Got the wait shm fd 18 [in get_wait_shm() at shm.c:117] DEBUG1: Futex wait update active 1 [in futex_wait_update() at futex.c:62] DEBUG1: Accepting application registration [in thread_registration_apps() at mai n.c:1423] DEBUG1: [thread] Dispatch UST command started [in thread_dispatch_ust_registrati on() at main.c:1324] DEBUG1: Futex n to 1 prepare done [in futex_nto1_prepare() at futex.c:73] DEBUG1: Woken up but nothing in the UST command queue [in thread_dispatch_ust_re gistration() at main.c:1334] DEBUG1: [thread] Manage client started [in thread_manage_clients() at main.c:379 4] DEBUG1: Accepting client command ... [in thread_manage_clients() at main.c:3826] >From the above it seems I don't have any problems. Yes I get that failure when >running lttng. I'm running this on a TI AM335x EVM with the lttng modules compiled against the arago 05.04 linux kernel(Version 3.2) and everything compiled using the arago toolchain. Thanks in advance Dhiliphen _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
