[ltt-dev] WARNING **: No channel for marker named kernel.syscall_entry found.

[Jack Daniel]

Hello,

Could someone tell me the meaning of the warnings "WARNING **: No channel for marker named kernel.syscall_entry found etc..." and how may I fix this warning?

Thanks and regards,
Jack

[root at localhost linux]# lttctl -C -w /tmp/trace1 trace1
Linux Trace Toolkit Trace Control 0.62-23122008         

Controlling trace : trace1

lttctl: Creating trace
lttctl: Forking lttd 
Linux Trace Toolkit Trace Daemon 0.62-23122008

Reading from debugfs directory : /mnt/debugfs/ltt/trace1
Writing to trace directory : /tmp/trace1               

lttctl: Starting trace
[root at localhost linux]# lttctl -D trace1   
Linux Trace Toolkit Trace Control 0.62-23122008

Controlling trace : trace1

lttctl: Pausing trace
lttctl: Destroying trace
[root at localhost linux]# lttv -m textDump -t /tmp/trace1

** (process:11558): WARNING **: No channel for marker named kernel.syscall_entry found

** (process:11558): WARNING **: No channel for marker named kernel.trap_entry found

** (process:11558): WARNING **: No channel for marker named kernel.irq_entry found

** (process:11558): WARNING **: No channel for marker named kernel.syscall_entry found

** (process:11558): WARNING **: No channel for marker named kernel.syscall_exit found

** (process:11558): WARNING **: No channel for marker named kernel.trap_entry found

** (process:11558): WARNING **: No channel for marker named kernel.trap_exit found

** (process:11558): WARNING **: No channel for marker named kernel.page_fault_entry found

** (process:11558): WARNING **: No channel for marker named kernel.page_fault_exit found

** (process:11558): WARNING **: No channel for marker named kernel.page_fault_nosem_entry found

** (process:11558): WARNING **: No channel for marker named kernel.page_fault_nosem_exit found

** (process:11558): WARNING **: No channel for marker named kernel.irq_entry found

** (process:11558): WARNING **: No channel for marker named kernel.irq_exit found

** (process:11558): WARNING **: No channel for marker named kernel.softirq_raise found

** (process:11558): WARNING **: No channel for marker named kernel.softirq_entry found

** (process:11558): WARNING **: No channel for marker named kernel.softirq_exit found

** (process:11558): WARNING **: No channel for marker named kernel.sched_schedule found

** (process:11558): WARNING **: No channel for marker named kernel.process_fork found

** (process:11558): WARNING **: No channel for marker named kernel.kthread_create found

** (process:11558): WARNING **: No channel for marker named kernel.process_exit found

** (process:11558): WARNING **: No channel for marker named kernel.process_free found

** (process:11558): WARNING **: No channel for marker named fs.exec found

** (process:11558): WARNING **: No channel for marker named userspace.thread_brand found

** (process:11558): WARNING **: No channel for marker named task_state.process_state found

** (process:11558): WARNING **: No channel for marker named global_state.statedump_end found

** (process:11558): WARNING **: No channel for marker named irq_state.interrupt found

** (process:11558): WARNING **: No channel for marker named block._blk_request_issue found

** (process:11558): WARNING **: No channel for marker named block._blk_request_complete found

** (process:11558): WARNING **: No channel for marker named userspace.function_entry found

** (process:11558): WARNING **: No channel for marker named userspace.function_exit found

** (process:11558): WARNING **: No channel for marker named syscall_state.sys_call_table found

** (process:11558): WARNING **: No channel for marker named kprobe_state.kprobe_table found

** (process:11558): WARNING **: No channel for marker named softirq_state.softirq_vec found
Trace set contains 1 traces

metadata.core_marker_id: 58328.721400644 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_format", event_id = 1, int = 4, long = 4, pointer = 4, size_t = 4, alignment = 0 }
metadata.core_marker_format: 58328.721405388 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_format", format = "channel %s name %s format %s" }
metadata.core_marker_id: 58328.721407305 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_id", event_id = 0, int = 4, long = 4, pointer = 4, size_t = 4, alignment = 0 }
metadata.core_marker_format: 58328.721409452 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_id", format = "channel %s name %s event_id %hu int #1u%zu long #1u%zu pointer #1u%zu size_t #1u%zu alignment #1u%u" }
metadata.core_marker_id: 58328.721411407 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_id", event_id = 0, int = 4, long = 4, pointer = 4, size_t = 4, alignment = 0 }
metadata.core_marker_format: 58328.721413542 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_id", format = "channel %s name %s event_id %hu int #1u%zu long #1u%zu pointer #1u%zu size_t #1u%zu alignment #1u%u" }
metadata.core_marker_id: 58328.721415471 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_format", event_id = 1, int = 4, long = 4, pointer = 4, size_t = 4, alignment = 0 }
metadata.core_marker_format: 58328.721417527 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_format", format = "channel %s name %s format %s" }
metadata.core_marker_id: 58328.721419283 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_format", event_id = 1, int = 4, long = 4, pointer = 4, size_t = 4, alignment = 0 }
metadata.core_marker_format: 58328.721421317 (/tmp/trace1/metadata_0), 0, 0, , , 0, 0x0, MODE_UNKNOWN { channel = "metadata", name = "core_marker_format", format = "channel %s name %s format %s" }
End trace set


      
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