Top all-time · #8904
Adam Leventhal
Personal blog · ahl.dtrace.orgsystemsprogramming
Adam Leventhal's personal blog at ahl.dtrace.org covers systems and programming. Since 2023, 8 different Hacker News readers have linked it 10 times, most often “APFS in Detail (2016)”. It is still writing: the last post was on 2026-10-11, and you can follow it by feed.
Too few sampled comments (5) to say how often HN recommends it.?
Why HN links it
HN readers cite Adam Leventhal's blog for posts on ZFS, DTrace, APFS and storage, such as his 2016 APFS analysis that Ars Technica picked up and his 2008 hybrid storage pools post.
Summarised by Claude from a sample of 5 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Adam Leventhal's Blog
Most-linked posts?
- APFS in Detail (2016)3 people · 3 mentions · first linked 2024-04-16
What Hacker News says?
Your (absurdly) broad claim is false -- and it's very easily disproven.[0] [0] https://ahl.dtrace.org/dtrace-conf-2024/
Comment linking /dtrace-conf-2024/
on “Java at 30: Interview with James Gosling”Submitted ZFS: Apple's new filesystem that wasn't (2016) as a story · 205 points
HN discussionBack in 2016, Ars Technica picked up this piece from my blog [1] as well as a longer piece reviewing the newly announced APFS [2] [3]. Glad it's still finding an audience! [1]: https://arstechnica.com/gadgets/2016/06/zfs-the-other-new-ap... [2]: https://ahl.dtrace.org/2016/06/19/apfs-part1/ [3]: https://arstechnica.com/gadgets/2016/06/a-zfs-developers-ana...
Comment linking /2016/06/19/apfs-part1/
on “ZFS: Apple's new filesystem that wasn't (2016)”Submitted DTrace Probes in Rust as a story · 7 points
HN discussionIt's very amusing that this kind of legend has persisted! ZFS is notorious for *noticing* when bits flip, something APFS designers claimed was rare given the robustness of Apple hardware.[1][2] What would ZFS on iPhone have looked like? Hard to know, and that certainly wasn't the design center. Neither here nor there, but DTrace was ported to iPhone--it was shown to me in hushed tones in the back of an auditorium on…
Comment linking /2016/06/19/apfs-part5/
on “ZFS: Apple's new filesystem that wasn't (2016)”Submitted APFS in Detail (2016) as a story · 2 points
HN discussionThey claimed it's not needed because Apple hardware is very good; from [1]: "The APFS engineers I talked to cited strong ECC protection within Apple storage devices. Both flash SSDs and magnetic media HDDs use redundant data to detect and correct errors. The engineers contend that Apple devices basically don’t return bogus data." Note this continues for a bit and criticises that position. Also see the HN discussion…
Comment linking /2016/06/19/apfs-part1/
on “Apple's APFS Migration: A Feat of Engineering”Submitted Rust and JSON Schema: odd couple or perfect strangers as a story · 2 points
HN discussionOne can then use local disk as a ZIL to improve IOps. When "Hybrid Storage Pools" storage pools were first introduced in 2008, when flash was still really expensive, this was a clever way of balancing speed and bulk storage with budget constraints: * https://ahl.dtrace.org/2008/11/10/hybrid-storage-pools-in-th... Nowadays flash is cheap/er, so all-flash storage is much more popular, with many storage products able t…
Comment linking /2008/11/10/hybrid-storage-pools-in-the-7410/
on “ZFS over iSCSI Storage in Proxmox”Submitted Pragmatic Magic in Rust as a story · 1 points
HN discussion
