Struct ExperimentalTracingV2ProducerStats 

pub struct ExperimentalTracingV2ProducerStats {

    pub producer_id: Option<u32>,
    pub pid: Option<i32>,
    pub producer_name: Option<String>,
    pub chunk_size_bytes: Option<u32>,
    pub num_chunks: Option<u32>,
    pub chunks_read: Option<u64>,
    pub bytes_read: Option<u64>,
    pub data_loss_chunks: Option<u64>,
    pub malformed_chunks: Option<u64>,
    pub unsupported_format_chunks: Option<u64>,
    pub invalid_writer_chunks: Option<u64>,
    pub invalid_destination_chunks: Option<u64>,
    pub trace_buffer_rejected_chunks: Option<u64>,
    pub rewrite_requests: Option<u64>,
    pub positions_skipped: Option<u64>,
    pub drain_passes: Option<u64>,
    pub drain_time_ns: Option<u64>,
    pub drain_max_time_ns: Option<u64>,
    pub writer_dropped_packets: Option<u64>,
    pub writer_stalls: Option<u64>,
    pub writer_stall_time_ms: Option<u64>,
}

Stats for the tracing v2 ring buffer of one producer since connection. The service emits one packet for each connected producer that has a data source in the session and an attached ring buffer. A producer that only uses the SMB has no stats packet. A cloned session keeps the stats from the time of the clone.

These stats include producer identity, so they are separate from TraceStats and pass through the session’s trace filter.

Next id: 22.

Fields

producer_id: Option<u32>

The producer that owns the ring buffer.

pid: Option<i32>

producer_name: Option<String>

chunk_size_bytes: Option<u32>

Layout of the attached ring buffer.

num_chunks: Option<u32>

chunks_read: Option<u64>

Num. chunks that the service copied out of the ring buffer.

bytes_read: Option<u64>

Total size of the packet fragments in |chunks_read|. It excludes the chunk headers and the fragment sizes.

data_loss_chunks: Option<u64>

Num. chunks discarded because their writer marked them as lossy. A writer marks the next chunk it gets after it dropped data, e.g. when the ring buffer was full.

malformed_chunks: Option<u64>

Num. chunks discarded because the sizes of their fragments are invalid. Either a size cannot be decoded, or the fragments do not fit in the chunk. A nonzero value points to a writer bug or to corrupt memory.

unsupported_format_chunks: Option<u64>

Num. chunks discarded because the service does not know their format.

invalid_writer_chunks: Option<u64>

The chunk’s writer ID was zero or out of range.

invalid_destination_chunks: Option<u64>

The chunk’s target buffer is not a TraceBuffer that the producer can write to.

trace_buffer_rejected_chunks: Option<u64>

The trace buffer refused the chunk. Its BufferStats say why, in |abi_violations| or |chunks_discarded|.

rewrite_requests: Option<u64>

Num. chunks that the service read while their writer was still filling them. The writer then moves its open fragment to another chunk.

positions_skipped: Option<u64>

Num. ring buffer positions that gave no chunk to the service. They are positions that no writer claimed, chunks with no published fragment and the discarded chunks above.

drain_passes: Option<u64>

Num. times the service read the ring buffer. It reads it when the producer sends a DrainV2RingBuffer request, on its own (e.g. on a flush), and to retry a pass that stopped early.

drain_time_ns: Option<u64>

Time that the service spent in |drain_passes|, measured with CLOCK_MONOTONIC. It does not count time when the device was suspended.

drain_max_time_ns: Option<u64>

Time of the longest of |drain_passes|, on the same clock. The service has one main thread, so a long pass delays every other producer and request.

writer_dropped_packets: Option<u64>

Num. packets that the writers dropped before the packets reached a chunk. This includes packets dropped before the service attached the ring buffer. A writer adds its drops when it flushes or stops dropping, so the value can lag.

writer_stalls: Option<u64>

Num. times a writer waited for a free chunk, and the total time of those waits. This is time that the app’s threads were blocked. A writer checks again after about 100 ms, so a longer stall counts several times.

writer_stall_time_ms: Option<u64>

Implementations

impl ExperimentalTracingV2ProducerStats

pub fn producer_id(&self) -> u32

Returns the value of producer_id, or the default value if producer_id is unset.

pub fn pid(&self) -> i32

Returns the value of pid, or the default value if pid is unset.

pub fn producer_name(&self) -> &str

Returns the value of producer_name, or the default value if producer_name is unset.

pub fn chunk_size_bytes(&self) -> u32

Returns the value of chunk_size_bytes, or the default value if chunk_size_bytes is unset.

pub fn num_chunks(&self) -> u32

Returns the value of num_chunks, or the default value if num_chunks is unset.

pub fn chunks_read(&self) -> u64

Returns the value of chunks_read, or the default value if chunks_read is unset.

pub fn bytes_read(&self) -> u64

Returns the value of bytes_read, or the default value if bytes_read is unset.

pub fn data_loss_chunks(&self) -> u64

Returns the value of data_loss_chunks, or the default value if data_loss_chunks is unset.

pub fn malformed_chunks(&self) -> u64

Returns the value of malformed_chunks, or the default value if malformed_chunks is unset.

pub fn unsupported_format_chunks(&self) -> u64

Returns the value of unsupported_format_chunks, or the default value if unsupported_format_chunks is unset.

pub fn invalid_writer_chunks(&self) -> u64

Returns the value of invalid_writer_chunks, or the default value if invalid_writer_chunks is unset.

pub fn invalid_destination_chunks(&self) -> u64

Returns the value of invalid_destination_chunks, or the default value if invalid_destination_chunks is unset.

pub fn trace_buffer_rejected_chunks(&self) -> u64

Returns the value of trace_buffer_rejected_chunks, or the default value if trace_buffer_rejected_chunks is unset.

pub fn rewrite_requests(&self) -> u64

Returns the value of rewrite_requests, or the default value if rewrite_requests is unset.

pub fn positions_skipped(&self) -> u64

Returns the value of positions_skipped, or the default value if positions_skipped is unset.

pub fn drain_passes(&self) -> u64

Returns the value of drain_passes, or the default value if drain_passes is unset.

pub fn drain_time_ns(&self) -> u64

Returns the value of drain_time_ns, or the default value if drain_time_ns is unset.

pub fn drain_max_time_ns(&self) -> u64

Returns the value of drain_max_time_ns, or the default value if drain_max_time_ns is unset.

pub fn writer_dropped_packets(&self) -> u64

Returns the value of writer_dropped_packets, or the default value if writer_dropped_packets is unset.

pub fn writer_stalls(&self) -> u64

Returns the value of writer_stalls, or the default value if writer_stalls is unset.

pub fn writer_stall_time_ms(&self) -> u64

Returns the value of writer_stall_time_ms, or the default value if writer_stall_time_ms is unset.

Trait Implementations

impl Clone for ExperimentalTracingV2ProducerStats

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExperimentalTracingV2ProducerStats

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ExperimentalTracingV2ProducerStats

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ExperimentalTracingV2ProducerStats

impl Hash for ExperimentalTracingV2ProducerStats

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for ExperimentalTracingV2ProducerStats

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for ExperimentalTracingV2ProducerStats

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ExperimentalTracingV2ProducerStats