io_ns_show(9)

💅 io_ns_show(9) — Kernel API Manual, bestie edition ✨

okay so this is the io_ns_show(9) page, and it's literally about io wait ns — the number of ns spent waiting on all I/O to complete. No cap. 🫶

🌸 NAME 🌸

io_ns_show — io wait ns — this is the number of ns spent waiting on all I/O to complete.

This includes tape movement commands such as rewinding, seeking to end of file or tape, and it also includes read and write. To determine the time spent on tape movement, subtract the read and write ns from this value. Periodt. 💅

✨ SYNOPSIS ✨

ssize_t io_ns_show (struct device *dev , struct device_attribute *attr , char *buf );

🎀 ARGUMENTS 🎀

• dev — struct device (the device, obvi 💖)
• attr — attribute structure
• buf — buffer to return formatted data in

🦋 SEE ALSO 🦋

Kernel file ./drivers/scsi/st.c:

• scsi_tape_release(9)
• position_lost_in_reset_show(9)
• read_cnt_show(9)
• read_byte_cnt_show(9)
• read_ns_show(9)
• write_cnt_show(9)
• write_byte_cnt_show(9)
• write_ns_show(9)
• in_flight_show(9)
• other_cnt_show(9)
• resid_cnt_show(9)

source/version: ./drivers/scsi — date: October 2026 — page: io_ns_show(9). bye bestie, slay 🫶💖