12h
会社の外付けモニターを切断すると MacBook Pro のWindowServerプロセスがメモリーを10GB以上確保したままになり、会議室で開くとスワップしまくりで動かないという事象が3回に1回起きて業務に支障があるので初期化してみた
直ったかどうかは明日出社してみないと分からないけど、もっさり感がなくなってうれしい
データはOneDriveで何もせずとも復旧し、アプリはAnsibleで管理しているのでワンコマンドで復旧でき、設定はバックアップしたフォルダーからClaudeに「○○の設定をリストアして」で戻せるから、昔に比べるとだいぶ気軽に初期化できる
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Dug a bit more just cause I love that you’re in macOS 😂 text me if you need to get some shit done
com.apple.windowserver.gpu.*
Might be useful for hammering WindowServer
com.apple.SecureEnclave.*
com.apple.ane.*
ANED.*
com.apple.TrustEvaluationAgent
com.apple.symptomsd
these folders can be throughout
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Jun 12
wrote up the full forensics on this one: four rounds of app-side fixes that each measurably helped, an Instruments dead end (the app really was healthy the whole time), and the WindowServer log line that finally explained how a menu bar app froze the entire desktop.
covers kcharlan's SkyLight datagram discovery, ProspectOre's two-bugs-in-one-trench-coat bisection, and the part that turned out to be macOS itself.
links in the reply 👇
Jun 11
put four merged PRs into @steipete's CodexBar menu lag on macOS 26. deferred refreshes, cached card heights, killed a String(describing:) in the icon redraw path. each one measurably helped. the system-wide freezes survived all of it.
the profiler kept insisting the app was healthy. no main-thread hang, idle CPU. someone finally read WindowServer's logs instead: during long menu tracking sessions it was dumping every other app's event buffer. the starvation was in everyone else's queues, which is why per-process diagnostics came back clean for weeks.
then I upgraded the same machine to the macOS 27 beta. same binary, same settings. lag gone entirely.
the last bug was never in the app 🫠
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Jun 11
Hey @aarondfrancis looks like Solo is using a lot of CPU with many windows active.
"renderer has now racked up 2h30m of CPU (plus 2h of WebKit GPU time and 5h27m of WindowServer compositing)".
Any way you can optimize this a bit? Tnx
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Jun 11
the WindowServer forensics (not mine, excellent work): github.com/steipete/CodexBar…
my macOS 27 datapoint: github.com/steipete/CodexBar…
the PRs: #1277 #1286 #1297 #1314
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in other news, I've just received the new company laptop and it has *almost* nothing installed but while people complain GNOME is heavy this Tahoe 26.3 OS takes 9GB of RAM just to boot (VS max 2GB my GNOME on ArchLinux would take) ... half a GB is just for the WindowServer 🤷
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Jun 10
The object is actually handled by WindowServer, not Windows display surface
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Jun 10
Ran Apple's new fm CLI (Foundation Models) on macOS 27 and watched where the work actually went.
It's a Neural Engine workload, full stop: ANE ~3W, GPU 0.17W (whose only clients are WindowServer my terminal drawing this).
Apple's on-device LLM runs on the ANE 🧵
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me and Alex do, for sure for sure. Most people aren't even aware that Metal 4 is still broken in macos 25. I mean so broken I currently know how to make any GPU app cause kernel memory leaks that eventually crash windowserver. And the rest has been inaccessible behind CoreML.
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510
Jun 3
求助一下 M 芯片 Mac 外接显示器用户。
我的主力机是 M2 Max / 96GB MBP，外接两个 4K 显示器。性能按理说应该够用，但使用中还是会不定期卡顿，WindowServer 占用经常异常偏高。
目前怀疑过几个方向：
一个是 4K 显示器使用 2K / 2304 这类缩放分辨率时，macOS 会超采样再缩放，增加 GPU 和 WindowServer 压力。
另一个是云盘同步、文件索引等系统任务可能持续占用资源。
但我试过关闭同步相关进程，也试过 2K / 2304 等不同缩放方案，问题依旧偶发。
想问下大家有没有遇到类似情况？尤其是 M 系列芯片 双 4K 外接屏，有没有什么有效的排查或解决思路？
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May 29
WindowServer,Linux,AWSの環境構築と運用保守を1年間通してやってきたけど
どれも楽しかったからどれが得意かって言われると得意不得意じゃなく楽しかったが強くて分からないなぁ🥺
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May 20
New Update 🆕 | Microsoft's KB5087539 security update for Windows Server 2025 boosts LSASS performance with Defender🎯, enhances SSDP notifications💻, fixes RDP security warnings⚠️, & supports Egypt's 2023 DST change. prajwaldesai.com/kb5087539-w… #windowsupdate #windowserver
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god's own WindowServer
May 17
which wm/de do you daily-drive?
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May 16
Funny thing, I've been using a mac for a few years and hammering in better tiling WM stuff and the system does NOT like it. WM actions are slow, the windowserver panics randomly, native tabs are reported as windows, each window controls its own position so weird clients bug out (Firefox), moving 8 windows, 5 of which are offscreen, at the same time makes the system crawl to a halt, etc.
And all of this is done using public APIs without disabling SIP. Sometimes I wonder if Apple HQ has any power users (the workspace switch animation's length is STILL based on the screen hz, and can't be configured). Their system sucks so bad
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