Skip to contents

System-wide disk I/O counters

Source: R/disk.R
ps_disk_io_counters.Rd

Returns a data.frame of system-wide disk I/O counters.

Usage

ps_disk_io_counters()

Value

A data frame of one row per disk of I/O stats, with columns name, read_count read_merged_count read_bytes, read_time, write_count, write_merged_count, write_bytes write_time, and busy_time.

Details

Includes the following non-NA fields for all supported platforms:

  • read_count: number of reads

  • write_count: number of writes

  • read_bytes: number of bytes read

  • write_bytes: number of bytes written

And for only some platforms:

  • read_time: time spent reading from disk (in milliseconds)

  • write_time: time spent writing to disk (in milliseconds)

  • busy_time: time spent doing actual I/Os (in milliseconds)

  • read_merged_count: number of merged reads (see iostats doc)

  • write_merged_count: number of merged writes (see iostats doc)

See also

Other disk functions: ps_disk_partitions(), ps_disk_usage()

Examples

ps_disk_io_counters()
#> # A data frame: 22 × 10
#>    name      read_count read_merged_count read_bytes read_time write_count
#>    <chr>          <dbl>             <dbl>      <dbl>     <dbl>       <dbl>
#>  1 loop0              0            216840    1698816         0           0
#>  2 loop1              0                50      18944         0           0
#>  3 loop2              0             87668     409088         0           0
#>  4 loop3              0             18710     366592         0           0
#>  5 loop4              0             23210     518144         0           0
#>  6 loop5              0             12254     466432         0           0
#>  7 loop6              0             34736     451072         0           0
#>  8 loop7              0            213270     269312         0           0
#>  9 nvme0n1      2286401         276931260 3574904832  36525945    34368119
#> 10 nvme0n1p1    2285730         276880908 3574273024  36525901    34368071
#> # ℹ 12 more rows
#> # ℹ 4 more variables: write_merged_count <dbl>, write_bytes <dbl>,
#> #   write_time <dbl>, busy_time <dbl>