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Summary

While investigating neondatabase/neon#11446 I learned a lot about the exact conditions in which io_uring punts to async workers (io-wq).

Specifically, I was surprised that, on Debian Bookworm 6.1.0-32-amd64, all Direct IO writes on ext4 would get punted to async workers. Even fallocateing the space upfront didn't help.

I wrote a reproducer app (see appendix) and used bpftrace + light kernel patching to triangulate in which cases we punt, and why.

The gist is: on mainline kernel 6.12.25, fallocate() before you write, and it should work.

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#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

int *add(const int *a, const int *b) {
    int *res = malloc(sizeof(int));
    *res = *a + *b;
    return res;
}

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= Lenovo Thinkpad T460s =

== Hardware Overview ==

 * CPU: Intel(R) Core(TM) i7-6600U CPU @ 2.60GHz
 * Intel HD Graphics 520
 * Intel Ethernet I219-LM
 * Intel Wireless 8260

== Notes ==

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plugin {

	# Dovecot Antispam-Plugin configuration for sa-learn

	# Names for mailboxes that should not be confused
	# i.e. only operate on mail moved in and out of the spam folder
	antispam_trash = Trash,"Deleted Messages"
	antispam_spam = Junk;Spam;SPAM

	# The mailtrain backend basically is a fork and execv of the

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#Xcode Base Localization Cheat Sheet

If you are using Base.lproj to localize your Storyboards in Xcode (and you should!), you need to work with specific attributes for the IB objects that are not always equal to the real UIKit objects in code.

• UILabel.text → IBUILabel.text
• UIButton.title → IBUIButton.normalTitle
• UINavigationItem.title → IBUINavigationItem.title
• UITabBarItem.title → IBUITabBarItem.title
• [UISegmentedControl setTitle:forSegmentAtIndex:] → IBUISegmentedControl.segmentTitles[n]
• Title of a section in a static UITableView → IBUITableViewSection.headerTitle

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#!/bin/sh
#
# update_storyboard_strings.sh - automatically extract translatable strings from storyboards and update strings files
# Based on http://forums.macrumors.com/showpost.php?p=16060008&postcount=4 by mikezang

storyboardExt=".storyboard"
stringsExt=".strings"
newStringsExt=".strings.new"
oldStringsExt=".strings.old"
localeDirExt=".lproj"