Linux vacca.o2switch.net 4.18.0-553.123.2.lve.el8.x86_64 #1 SMP Thu May 7 23:17:13 UTC 2026 x86_64

//proc/self/io

 rchar: 2071345
wchar: 1126
syscr: 491
syscw: 5
read_bytes: 0
write_bytes: 0
cancelled_write_bytes: 0