cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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perf-iostat.txt (2941B)

      1perf-iostat(1)
      2===============
      3
      4NAME
      5----
      6perf-iostat - Show I/O performance metrics
      7
      8SYNOPSIS
      9--------
     10[verse]
     11'perf iostat' list
     12'perf iostat' <ports> \-- <command> [<options>]
     13
     14DESCRIPTION
     15-----------
     16Mode is intended to provide four I/O performance metrics per each PCIe root port:
     17
     18- Inbound Read   - I/O devices below root port read from the host memory, in MB
     19
     20- Inbound Write  - I/O devices below root port write to the host memory, in MB
     21
     22- Outbound Read  - CPU reads from I/O devices below root port, in MB
     23
     24- Outbound Write - CPU writes to I/O devices below root port, in MB
     25
     26OPTIONS
     27-------
     28<command>...::
     29	Any command you can specify in a shell.
     30
     31list::
     32	List all PCIe root ports.
     33
     34<ports>::
     35	Select the root ports for monitoring. Comma-separated list is supported.
     36
     37EXAMPLES
     38--------
     39
     401. List all PCIe root ports (example for 2-S platform):
     41
     42   $ perf iostat list
     43   S0-uncore_iio_0<0000:00>
     44   S1-uncore_iio_0<0000:80>
     45   S0-uncore_iio_1<0000:17>
     46   S1-uncore_iio_1<0000:85>
     47   S0-uncore_iio_2<0000:3a>
     48   S1-uncore_iio_2<0000:ae>
     49   S0-uncore_iio_3<0000:5d>
     50   S1-uncore_iio_3<0000:d7>
     51
     522. Collect metrics for all PCIe root ports:
     53
     54   $ perf iostat -- dd if=/dev/zero of=/dev/nvme0n1 bs=1M oflag=direct
     55   357708+0 records in
     56   357707+0 records out
     57   375083606016 bytes (375 GB, 349 GiB) copied, 215.974 s, 1.7 GB/s
     58
     59    Performance counter stats for 'system wide':
     60
     61      port             Inbound Read(MB)    Inbound Write(MB)    Outbound Read(MB)   Outbound Write(MB)
     62   0000:00                    1                    0                    2                    3
     63   0000:80                    0                    0                    0                    0
     64   0000:17               352552                   43                    0                   21
     65   0000:85                    0                    0                    0                    0
     66   0000:3a                    3                    0                    0                    0
     67   0000:ae                    0                    0                    0                    0
     68   0000:5d                    0                    0                    0                    0
     69   0000:d7                    0                    0                    0                    0
     70
     713. Collect metrics for comma-separated list of PCIe root ports:
     72
     73   $ perf iostat 0000:17,0:3a -- dd if=/dev/zero of=/dev/nvme0n1 bs=1M oflag=direct
     74   357708+0 records in
     75   357707+0 records out
     76   375083606016 bytes (375 GB, 349 GiB) copied, 197.08 s, 1.9 GB/s
     77
     78    Performance counter stats for 'system wide':
     79
     80      port             Inbound Read(MB)    Inbound Write(MB)    Outbound Read(MB)   Outbound Write(MB)
     81   0000:17               358559                   44                    0                   22
     82   0000:3a                    3                    2                    0                    0
     83
     84        197.081983474 seconds time elapsed
     85
     86SEE ALSO
     87--------
     88linkperf:perf-stat[1]