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News

Search With UwView, Compare With UwDiff — Introducing UwDiff, a Tool That Compares Two Files in Any Format, Encoding or Size: Key Matching of Two 10 GB CSV Files in 21.8 s, While the Worst Case Where Almost Every Line Differs Takes 110 s

Once you can open and search a huge log, the next question is what changed between last time and this time. La…
2026.10.25
News
Technical Guide

Where the Second Query on 10 GB Got Shorter — Full Spectrum Part 4: 0.73s Against ripgrep’s 13.54s on a Regex With No Required Literal, While the Two-Word Join Stays Level at 1.24x

A mechanism that pays off at 3 GB does not automatically pay off at 10 GB. The line skeleton and the block mar…
2026.10.23
Technical Guide
Technical Guide

What We Took From klogg, ripgrep, grep and PowerGREP — The Features UwView Borrowed From Other Tools, and the Ones We Deliberately Left Out (First Light to Full Spectrum)

UwView is built out of a long record of losing to other tools. It lost to klogg on a feature checklist, lost t…
2026.10.22
Technical Guide
Technical Guide

Knowing Which Blocks Not to Open — Full Spectrum Part 3: 0.17s Against ripgrep’s 0.31s on a Plain Search, and 4% Slower for Words That Live in Every Block

Cut 3 GB of OpenStreetMap XML into 1 MB blocks and you get 2,893 of them. The word I was looking for appeared…
2026.10.21
Technical Guide
Technical Guide

An Index That Knows Where the Answer Cannot Be — Full Spectrum Part 2: 28.2x Over ripgrep on -E -v, and Level When Every Block Holds a Hit

Out of 92,239,125 lines, exactly one was a hit. Ask for the lines of a 3 GB OpenStreetMap XML file that do not…
2026.10.19
Technical Guide
Technical Guide

Our Index Now Holds Shift-JIS, EUC-JP and UTF-16 as UTF-8 — Full Spectrum Part 1: 5.4x to 38.8x Over ripgrep -E From the Second Query, 1.2x to 1.5x Behind on the First

The conversion ran every single time. Searching a 3 GB Shift-JIS file meant decoding 3 GB before a single hit…
2026.10.16
Technical Guide
News

UwView v1.9.0 “Full Spectrum” — Compared with ripgrep: (Plain, Word, Excel, PDF, Compressed) × (CLI, GUI) × (Huge, Many) × (Four Encodings) × (Complex Searches), Made Fast Across the Board

As a formula, it looks like this. Free UwView (uvf) (plain + Word, Excel, PDF + compressed [gz, bz2, xz, lzma,…
2026.10.14
News
Technical Guide

The Newline Count I Said Would Never Show Up in Seconds Was 40% of the Second Search — Wide Field Part 12: Counting 5x Faster, and Overtaking ripgrep When Hot (3 GB, 0.40 to 0.27 s)

[Update, 16 October 2026] Speed today — with v1.9.0 the second run is still on par with ripgrep The figures in…
2026.10.08
Technical Guide
Tech

Catching Up With Rust’s ripgrep in C# — Huge Files From 205 s to On Par, 86k Small Files From 19x Behind to On Par, and Complex Searches Where uvp Is 1.07–3.5x ripgrep

[Update, 16 October 2026] Speed today — complex searches went from 1.07–3.53× to 1.22–4.56× The tables in this…
2026.10.06
Tech
Technical Guide

One Command for 12 Files, Seven Compression Formats, zip and pbf — Just Like ripgrep. Wide Field Part 15 (Final): The Free Build Stayed On Par, uvp Reached 4.0x on an 86k-File Kernel Tree, and Two Kinds of Loss Remain

Two kinds of loss are left. Over fourteen posts I counted every place where ripgrep is still faster. Only two…
2026.10.06
Technical Guide
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