UI Freeze/Unresponsive when switching conversation if Time Machine is backing up

[gaplo917]

Telegram MacOS

I think it is an performance regression issues.

Video demo

Telegram Desktop

Comparatively, telegram desktop is very smooth.

Video demo

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Updates: The Mac's Time machine is performing "Preparing Data" to cause this issue. That mean if a Mac is under heavy I/O, the telegram UI become unresponsive.

P.S. My iMac is 1TB NVMe SSD and backing up to Thunderbolt 3 HDD storage

[zweeltow]

Can you explain your macOS and Telegram version?

[gaplo917]

@zweeltow macOS: 10.15.5 Telegram macOS: 6.2.3 (202354) Stable

[overtake]

probably your hard-drive/ssd is lagging

[gaplo917]

@overtake You can check the recording time and my machine specification(Top spec MacbookPro 16”) in the videos. Also, two videos were recorded nearly the same time to prove that it is a frontend implementation issue but not telegram backend issue.

The laggy is not related to system loading because telegram desktop has no issues at nearly the same moment.

Before I decide to report this issues, I encounter this for a long period(about 2 days) and can 100% reproduce even Cmd + Q to restart the Telegram macOS.

If you think it is an I/O issue, is that a user action that triggering a blocking I/O read implementation before performing the action can be improved by non-blocking implementation?

Or the I/O reading can be performed in background thread instead of main thread?

Or use more system memory(fixed size of LRU cache) to store the serialized chat history?

As I use telegram nearly for everything, just want to improve the speed of native macOS client that support secret chat.

[gaplo917]

@overtake I can reproduce the laggy when the Time Machine is under "Preparing data" stage (iMac 1TB SSD). It is a I/O issues. That's why I keep encounter this issue at some moments that has no CPU & GPU loading.

As I mentioned, I would suggest to hold recent chats in memory rather than read it from disk each time when switching the chats.