<div dir="ltr"><div>Hi,</div><div><br></div><div>I’m trying to use LTTng on Android 4.0.4 with Linux kernel version of 3.0.15.</div><div>I cross-compiled the LTTng modules and tools on my Ubuntu 12.04 machine.</div><div><br>
</div><div>First I installed all the LTTng modules using <i>insmod</i>, because there is no <i>modprobe</i> in Android. It worked fine. </div><div>However, when I tried to run <i>lttng</i>, it failed due to "No session daemon is available" error. I tried to run<i> lttng-sessiond</i>, then it just kept hanging and cannot finish. <br>
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<div>Even I kept <i>lttng-sessiond</i> hanging in a new terminal session and ran <i>lttng</i> in a separate terminal, it gave the same error.<br></div><div><br></div><div>I'm posting the log below.</div><div><br></div>
<div>Any help would be greatly appreciated!</div><div><br></div><div>Thanks,</div><div>Cao</div><div><br></div><div><b>root@android:/data/lttng/bin # ./lttng -vvv list -k</b></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
DEBUG1 [2016/2016]: Session daemon at: /data/lttng/bin/lttng-sessiond (in check_sessiond() at lttng.c:381)<br> Spawning a session daemon<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-tracer<br>
sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-lib-ring-buffer<br> sh: /sbin/modprobe: not found<br>
Error: Unable to load module lttng-ring-buffer-client-discard<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-client-overwrite<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-metadata-client<br>
sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-client-mmap-discard<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-client-mmap-overwrite<br>
sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-metadata-mmap-client<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-probe-lttng<br> sh: /sbin/modprobe: not found<br>
sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br>
sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br>
sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br>
sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br>
sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br>
sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> sh: /sbin/modprobe: not found<br> Warning: No tracing group detected<br>
DEBUG1 [2016/2016]: SIGUSR1 caught (in sighandler() at lttng.c:204)<br> DEBUG2 [2016/2016]: Session name: (null) (in cmd_list() at commands/list.c:743)<br> DEBUG1 [2016/2016]: Getting kernel tracing events (in list_kernel_events() at commands/list.c:433)<br>
Error: Unable to list kernel events: No session daemon is available<br> Error: Command error<br> DEBUG1 [2016/2016]: Clean exit (in clean_exit() at lttng.c:175)</blockquote><div><br></div><div><br></div><div><b>root@android:/data/lttng/bin # ./lttng-sessiond -vvv</b></div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><br> DEBUG3 [2132/2132]: Creating LTTng run directory: /data/lttng (in create_lttng_rundir() at main.c:3853)<br>
DEBUG2 [2132/2132]: Kernel consumer err path: /data/lttng/kconsumerd/error (in main() at main.c:4140)<br> DEBUG2 [2132/2132]: Kernel consumer cmd path: /data/lttng/kconsumerd/command (in main() at main.c:4142)<br>
DEBUG1 [2132/2132]: Client socket path /data/lttng/client-lttng-sessiond (in main() at main.c:4195)<br>
DEBUG1 [2132/2132]: Application socket path /data/lttng/lttng-ust-sock-4 (in main() at main.c:4196)<br> DEBUG1 [2132/2132]: Application wait path /lttng-ust-wait-4 (in main() at main.c:4197)<br> DEBUG1 [2132/2132]: LTTng run directory path: /data/lttng (in main() at main.c:4198)<br>
DEBUG2 [2132/2132]: UST consumer 32 bits err path: /data/lttng/ustconsumerd32/error (in main() at main.c:4207)<br> DEBUG2 [2132/2132]: UST consumer 32 bits cmd path: /data/lttng/ustconsumerd32/command (in main() at main.c:4209)<br>
DEBUG2 [2132/2132]: UST consumer 64 bits err path: /data/lttng/ustconsumerd64/error (in main() at main.c:4218)<br> DEBUG2 [2132/2132]: UST consumer 64 bits cmd path: /data/lttng/ustconsumerd64/command (in main() at main.c:4220)<br>
DEBUG2 [2132/2132]: Creating consumer directory: /data/lttng/kconsumerd (in set_consumer_sockets() at main.c:3895)<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-tracer<br> DEBUG2 [2132/2132]: Kernel tracer version validated (major version 2) (in kernel_validate_version() at kernel.c:688)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-ftrace (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-kprobes (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-kretprobes (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-lib-ring-buffer<br>
sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-client-discard<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-client-overwrite<br> sh: /sbin/modprobe: not found<br>
Error: Unable to load module lttng-ring-buffer-metadata-client<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-client-mmap-discard<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-client-mmap-overwrite<br>
sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-ring-buffer-metadata-mmap-client<br> sh: /sbin/modprobe: not found<br> Error: Unable to load module lttng-probe-lttng<br> sh: /sbin/modprobe: not found<br>
DEBUG1 [2132/2132]: Modprobe successfully lttng-types (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-asoc (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-block (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-btrfs (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-compaction (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-ext3 (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-ext4 (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-gpio (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-irq (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-jbd (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-jbd2 (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-kmem (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-kvm (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-lock (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-module (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-napi (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-net (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-power (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-printk (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-random (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-rcu (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-regmap (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-regulator (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-rpm (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-sched (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-scsi (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-signal (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-skb (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-sock (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-statedump (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-sunrpc (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-timer (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-udp (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-vmscan (in modprobe_lttng_data() at modprobe.c:227)<br>
sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-workqueue (in modprobe_lttng_data() at modprobe.c:227)<br> sh: /sbin/modprobe: not found<br> DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-writeback (in modprobe_lttng_data() at modprobe.c:227)<br>
DEBUG1 [2132/2132]: Kernel tracer fd 6 (in init_kernel_tracer() at main.c:2139)<br> DEBUG2 [2132/2132]: Creating consumer directory: /data/lttng/ustconsumerd64 (in set_consumer_sockets() at main.c:3895)<br> DEBUG2 [2132/2132]: Creating consumer directory: /data/lttng/ustconsumerd32 (in set_consumer_sockets() at main.c:3895)<br>
DEBUG1 [2132/2132]: Signal handler set for SIGTERM, SIGPIPE and SIGINT (in set_signal_handler() at main.c:3987)<br> DEBUG3 [2132/2132]: Session daemon client socket 10 and application socket 11 created (in init_daemon_socket() at main.c:3757)<br>
Warning: No tracing group detected<br> DEBUG3 [2132/2132]: Created hashtable size 4 at 0x1250208 of type 2 (in lttng_ht_new() at hashtable.c:112)<br> DEBUG3 [2132/2132]: Global buffer per UID registry initialized (in buffer_reg_init_uid_registry() at buffer-registry.c:98)<br>
DEBUG3 [2132/2132]: Created hashtable size 4 at 0x1250360 of type 1 (in lttng_ht_new() at hashtable.c:112)<br> DEBUG3 [2132/2132]: Global buffer per PID registry initialized (in buffer_reg_init_pid_registry() at buffer-registry.c:219)<br>
DEBUG1 [2132/2132]: epoll set max size is 153106 (in compat_epoll_set_max_size() at compat-epoll.c:270)<br> DEBUG1 [2132/2132]: Command subsystem initialized (in cmd_init() at cmd.c:2146)<br> DEBUG1 [2132/2132]: Pid 2132 written in file /data/lttng/lttng-sessiond.pid (in utils_create_pid_file() at utils.c:237)<br>
DEBUG1 [2132/2182]: [thread] Manage health check started (in thread_manage_health() at main.c:3106)<br> DEBUG1 [2132/2182]: Health check ready (in thread_manage_health() at main.c:3148)<br> DEBUG1 [2132/2185]: [thread] Manage application registration started (in thread_registration_apps() at main.c:1542)<br>
DEBUG1 [2132/2185]: Notifying applications of session daemon state: 1 (in notify_ust_apps() at main.c:507)<br> DEBUG1 [2132/2185]: Got the wait shm fd 21 (in get_wait_shm() at shm.c:122)<br> DEBUG1 [2132/2185]: Futex wait update active 1 (in futex_wait_update() at futex.c:63)<br>
DEBUG1 [2132/2185]: Accepting application registration (in thread_registration_apps() at main.c:1579)<br> DEBUG1 [2132/2183]: [thread] Manage client started (in thread_manage_clients() at main.c:3303)<br> DEBUG1 [2132/2183]: Accepting client command ... (in thread_manage_clients() at main.c:3349)<br>
DEBUG1 [2132/2186]: [thread] Manage application started (in thread_manage_apps() at main.c:1152)<br> DEBUG1 [2132/2186]: Apps thread polling on 2 fds (in thread_manage_apps() at main.c:1182)<br> DEBUG1 [2132/2188]: [thread] Thread manage kernel started (in thread_manage_kernel() at main.c:702)<br>
DEBUG1 [2132/2188]: Updating kernel poll set (in update_kernel_poll() at main.c:568)<br> DEBUG1 [2132/2188]: Thread kernel polling on 2 fds (in thread_manage_kernel() at main.c:747)<br> DEBUG1 [2132/2184]: [thread] Dispatch UST command started (in thread_dispatch_ust_registration() at main.c:1352)<br>
DEBUG1 [2132/2184]: Futex n to 1 prepare done (in futex_nto1_prepare() at futex.c:75)<br> DEBUG1 [2132/2184]: Woken up but nothing in the UST command queue (in thread_dispatch_ust_registration() at main.c:1365)</blockquote>
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