seandavi/nextflow_trace_columns.tsv

## nextflow_trace_columns.tsv

          
            Name
            Description

            
              task_id
              Task ID.

            
              hash
              Task hash code.

            
              native_id
              Task ID given by the underlying execution system e.g. POSIX process PID when executed locally, job ID when executed by a grid engine, etc.

            
              process
              Nextflow process name.

            
              tag
              User provided identifier associated this task.

            
              name
              Task name.

            
              status
              Task status.

            
              exit
              POSIX process exit status.

            
              module
              Environment module used to run the task.

            
              container
              Docker image name used to execute the task.

            
              cpus
              The cpus number request for the task execution.

            
              time
              The time request for the task execution

            
              disk
              The disk space request for the task execution.

            
              memory
              The memory request for the task execution.

            
              attempt
              Attempt at which the task completed.

            
              submit
              Timestamp when the task has been submitted.

            
              start
              Timestamp when the task execution has started.

            
              complete
              Timestamp when task execution has completed.

            
              duration
              Time elapsed to complete since the submission.

            
              realtime
              Task execution time i.e. delta between completion and start timestamp.

            
              queue
              The queue that the executor attempted to run the process on.

            
              %cpu
              Percentage of CPU used by the process.

            
              %mem
              Percentage of memory used by the process.

            
              rss
              Real memory (resident set) size of the process. Equivalent to ps -o rss .

            
              vmem
              Virtual memory size of the process. Equivalent to ps -o vsize .

            
              peak_rss
              Peak of real memory. This data is read from field VmHWM in /proc/$pid/status file.

            
              peak_vmem
              Peak of virtual memory. This data is read from field VmPeak in /proc/$pid/status file.

            
              rchar
              Number of bytes the process read, using any read-like system call from files, pipes, tty, etc. This data is read from file /proc/$pid/io.

            
              wchar
              Number of bytes the process wrote, using any write-like system call. This data is read from file /proc/$pid/io.

            
              syscr
              Number of read-like system call invocations that the process performed. This data is read from file /proc/$pid/io.

            
              syscw
              Number of write-like system call invocations that the process performed. This data is read from file /proc/$pid/io.

            
              read_bytes
              Number of bytes the process directly read from disk. This data is read from file /proc/$pid/io.

            
              write_bytes
              Number of bytes the process originally dirtied in the page-cache (assuming they will go to disk later). This data is read from file /proc/$pid/io.

            
              vol_ctxt
              Number of voluntary context switches.

            
              inv_ctxt
              Number of involuntary context switches.
	Name	Description
	task_id	Task ID.
	hash	Task hash code.
	native_id	Task ID given by the underlying execution system e.g. POSIX process PID when executed locally, job ID when executed by a grid engine, etc.
	process	Nextflow process name.
	tag	User provided identifier associated this task.
	name	Task name.
	status	Task status.
	exit	POSIX process exit status.
	module	Environment module used to run the task.
	container	Docker image name used to execute the task.
	cpus	The cpus number request for the task execution.
	time	The time request for the task execution
	disk	The disk space request for the task execution.
	memory	The memory request for the task execution.
	attempt	Attempt at which the task completed.
	submit	Timestamp when the task has been submitted.
	start	Timestamp when the task execution has started.
	complete	Timestamp when task execution has completed.
	duration	Time elapsed to complete since the submission.
	realtime	Task execution time i.e. delta between completion and start timestamp.
	queue	The queue that the executor attempted to run the process on.
	%cpu	Percentage of CPU used by the process.
	%mem	Percentage of memory used by the process.
	rss	Real memory (resident set) size of the process. Equivalent to ps -o rss .
	vmem	Virtual memory size of the process. Equivalent to ps -o vsize .
	peak_rss	Peak of real memory. This data is read from field VmHWM in /proc/$pid/status file.
	peak_vmem	Peak of virtual memory. This data is read from field VmPeak in /proc/$pid/status file.
	rchar	Number of bytes the process read, using any read-like system call from files, pipes, tty, etc. This data is read from file /proc/$pid/io.
	wchar	Number of bytes the process wrote, using any write-like system call. This data is read from file /proc/$pid/io.
	syscr	Number of read-like system call invocations that the process performed. This data is read from file /proc/$pid/io.
	syscw	Number of write-like system call invocations that the process performed. This data is read from file /proc/$pid/io.
	read_bytes	Number of bytes the process directly read from disk. This data is read from file /proc/$pid/io.
	write_bytes	Number of bytes the process originally dirtied in the page-cache (assuming they will go to disk later). This data is read from file /proc/$pid/io.
	vol_ctxt	Number of voluntary context switches.
	inv_ctxt	Number of involuntary context switches.