cbs_row_t Struct Reference

One measured (backend, leg, block size) result row. More...

#include <sweep_block_internal.h>

Data Fields
const char *	backend
	Backend name (cbs_backend_t.name).
const char *	leg
	Workload leg: "seq" or "hot".
uint32_t	block_bytes
	Swept block / frame / chunk size in bytes.
uint32_t	frames
	Cache frames at this size (budget / block).
uint64_t	reads
	Reader requests issued.
uint64_t	hits
	ra8_vmem hits.
uint64_t	misses
	ra8_vmem misses.
uint64_t	evictions
	ra8_vmem evictions.
uint64_t	be_calls
	Backend read calls (storage commands).
uint64_t	be_bytes
	Bytes delivered to the cache by the backend.
uint64_t	src_bytes
	Raw medium bytes moved (compressed for RBKC).
uint64_t	backing_bytes
	On-medium backing size at this block size.
uint64_t	wall_ns
	Wall-clock time of the timed loop, in ns.

Detailed Description

One measured (backend, leg, block size) result row.

Filled by the sweep driver; be_calls/be_bytes are counted at the ra8_vsource_read_fn seam (one call per cache miss), while src_bytes counts raw medium traffic (compressed bytes for the RBKC backend; equal to be_bytes for uncompressed backends).

Invariant

hits + misses == reads for every completed row.

See also

cb_sweep_block()

Since

0.1.0

Definition at line 117 of file sweep_block_internal.h.

Field Documentation

backend

const char* cbs_row_t::backend

Backend name (cbs_backend_t.name).

Definition at line 118 of file sweep_block_internal.h.

Referenced by priv_print_row().

backing_bytes

uint64_t cbs_row_t::backing_bytes

On-medium backing size at this block size.

Definition at line 129 of file sweep_block_internal.h.

Referenced by priv_print_row(), and priv_print_seq_table().

be_bytes

uint64_t cbs_row_t::be_bytes

Bytes delivered to the cache by the backend.

Definition at line 127 of file sweep_block_internal.h.

Referenced by internal_run_block(), and priv_print_row().

be_calls

uint64_t cbs_row_t::be_calls

Backend read calls (storage commands).

Definition at line 126 of file sweep_block_internal.h.

Referenced by internal_run_block(), priv_print_row(), and priv_print_seq_table().

block_bytes

uint32_t cbs_row_t::block_bytes

Swept block / frame / chunk size in bytes.

Definition at line 120 of file sweep_block_internal.h.

Referenced by priv_print_row().

evictions

uint64_t cbs_row_t::evictions

ra8_vmem evictions.

Definition at line 125 of file sweep_block_internal.h.

Referenced by internal_drive(), and priv_print_row().

frames

uint32_t cbs_row_t::frames

Cache frames at this size (budget / block).

Definition at line 121 of file sweep_block_internal.h.

Referenced by priv_print_row(), and priv_print_seq_table().

hits

uint64_t cbs_row_t::hits

ra8_vmem hits.

Definition at line 123 of file sweep_block_internal.h.

Referenced by internal_drive(), priv_print_hot_table(), and priv_print_row().

leg

const char* cbs_row_t::leg

Workload leg: "seq" or "hot".

Definition at line 119 of file sweep_block_internal.h.

Referenced by priv_print_row().

misses

uint64_t cbs_row_t::misses

ra8_vmem misses.

Definition at line 124 of file sweep_block_internal.h.

Referenced by internal_drive(), priv_print_hot_table(), priv_print_row(), and priv_print_seq_table().

reads

uint64_t cbs_row_t::reads

Reader requests issued.

Definition at line 122 of file sweep_block_internal.h.

Referenced by internal_drive(), internal_row_mibs(), priv_print_hot_table(), priv_print_row(), and priv_print_seq_table().

src_bytes

uint64_t cbs_row_t::src_bytes

Raw medium bytes moved (compressed for RBKC).

Definition at line 128 of file sweep_block_internal.h.

Referenced by internal_run_block(), priv_print_row(), and priv_print_seq_table().

wall_ns

uint64_t cbs_row_t::wall_ns

Wall-clock time of the timed loop, in ns.

Definition at line 130 of file sweep_block_internal.h.

Referenced by internal_drive(), internal_row_mibs(), priv_print_hot_table(), priv_print_row(), and priv_print_seq_table().

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The documentation for this struct was generated from the following file:

• tools/cache_bench/inc/sweep_block_internal.h