New Release: smc-tools v1.6

smc-tools v1.6 is now available for download here.

Highlights in this release:

smcd/smcr: New stats Command

Display statistics on SMC usage to gain valuable insights: 

  root@tux> smcd stats
  SMC-D Connections Summary
    Total connections handled       152730
    SMC connections                 152730
    Handshake errors                     0
    Avg requests per SMC conn          813.1
    TCP fallback                         0

  RX Stats
    Data transmitted (Bytes)  270311225427 (270.3G)
    Total requests                61619256
    Buffer full                     114746 (0.19%)
             8KB   16KB   32KB   64KB  128KB  256KB  512KB >512KB
    Bufs       0      2    140 2.103K      0      2      0 95.97K
    Reqs  54.07M      3 7.552M      0      0      0      0      0

  TX Stats
    Data transmitted (Bytes)  271274963896 (271.3G)
    Total requests                62565728
    Buffer full                          0 (0.00%)
    Buffer full(remote)              90038 (0.14%)
    Buffer too small                     0 (0.00%)
    Buffer too small(remote)             0 (0.00%)
             8KB   16KB   32KB   64KB  128KB  256KB  512KB >512KB
    Bufs       0 2.384K    142      0      0      2      0      0
    Reqs  54.92M      3 7.552M      0      0      0      0      0

  Extras
    Special socket calls                 0

Requires Linux kernel 5.14. See the respective man page for further details.

smc_run: New Command-Line Switches

Use command-line options -r and -t to request specific buffer sizes for receive and transmit buffers respectively:

  root@tux> smc_run -r 1M -t 128K ./foo

Alternatively, use respective environment variables when using the preload library directly:

  root@tux> export SMC_RCVBUF=1M
  root@tux> export SMC_SNDBUF=128K

Again, see the respective man page for further details.

For more information, see the README.