copy_report: Data Copy Report

In shard: Deterministic, Zero-Copy Parallel Execution for R

Data Copy Report

Description

Generates a report of data transfer and copy statistics during parallel execution.

Usage

copy_report(result = NULL)

Arguments

result

Optional. A shard_result object to extract copy stats from.

Value

An S3 object of class shard_report with type "copy" containing:

• type: "copy"

• timestamp: When the report was generated

• borrow_exports: Number of borrowed input exports

• borrow_bytes: Total bytes in borrowed inputs

• result_imports: Number of result imports

• result_bytes: Estimated bytes in results

• buffer_writes: Number of buffer write operations

• buffer_bytes: Total bytes written to buffers

Examples

res <- shard_map(shards(100, workers = 2), function(s) sum(s$idx), workers = 2)
pool_stop()
copy_report(res)

shard documentation built on April 3, 2026, 9:08 a.m.