PROBE::NFS.AOP.R(3stap)

💅 PROBE::NFS.AOP.R — it's in the 3stap girlies (Network File Storage Tapsets)

okay bestie, sit down, we're doing NFS probe lore today 🦋

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✨ NAME ✨

probe::nfs.aop.readahead — the NFS client out here reading multiple pages at once, and honestly? iconic.

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🌸 SYNOPSIS 🌸

probe nfs.aop.readahead {}

that's it. that's the whole vibe. no args, no drama, just a probe sitting there ready to spill tea 💅

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💖 VALUES 💖

the receipts you get handed when this thing fires, one by one, no skipping:

• size — how many pages it attempted to read in this execution. yes, this is basically the same gossip as nr_pages below, and no, we are not merging them, the manpage said so 🫶
• file — the filp argument, aka the file pointer, aka the lil handle on the file in question
• ino — the inode number. every file's own personal ID, no cap
• rpages — read size, counted in pages
• rsize — read size, counted in bytes (same energy, different unit, we love a conversion moment)
• dev — device identifier, the "which device is this even on" answer
• nr_pages — number of pages attempted to read in this execution. twin flame behaviour with size, fr fr

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🔥 DESCRIPTION 🔥

Fires when in readahead way, read several pages once.

translation: it goes off when we're doing the readahead thing — you know, reading several pages at once instead of being all slow and one-at-a-time about it. efficiency queen ✨

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👑 SEE ALSO 👑

• tapset::nfs(3stap) — go read the main character's page, iykyk

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and that's the whole page, bestie!! 🎀 this was the SystemTap Tapset Reference (that's the source/version flex right there) and it's dated September 2026, so mark your calendar, set your reminder, and go probe something. slay 💜🦋✨