ngscopeclient Windows / Linux(Ubuntu 23.04) big slow down on some zoom step

bvernoux commented 1 year ago

Tested with ngscopeclient 0.1-https://github.com/glscopeclient/scopehal-apps/commit/e2617799fdf28b9984db4b87c7b2ac3224e2e3c5 (Commit 25 May 2023) PC used:

Ryzen 9 7950X3D
ASUS ROG Crosshair X670E Hero(BIOS 1415) + 96GB Corsair VENGEANCE DDR5 5200 MHz (2 x 48 GB)
ASUS TUF Gaming GeForce RTX 4070 12GB GDDR6X OC Edition
SSD 990 Pro 2TB M.2, PCIe 4.0 NVMe (Windows11)
SSD 980 Pro 500GB M.2, PCIe 4.0 NVMe (Ubuntu 23.04) Dual Boot

OS tested:

Windows11 Pro 22H2 OS Build 22621.1702 (with all updates) / NVIDIA GeForce Game Ready Driver 532.03 Release date: 05/24/2023
Ubuntu 23.04 (with all updates) / NVIDIA Driver for Linux64bits 530.41.03

Data used see CH569_SerDes_180Mbps_data_scopesession.zip

Big slow down on some zoom steps when using CH569_SerDes_180Mbps_data_scopesession.zip

ngscopeclient.exe
File => Open Offline... => D:\glscopeclient\CH569_SerDes_180Mbps.scopesession
At certain zoom level everything is slow, there is exactly 2 zoom steps which reproduce that issue systematically, see screenshots on different OS

Screenshot of the issue on Windows11 Pro Ryzen 9 7950X3D/RTX4070 we see rasterize time and tone map time exceed 200ms (and even more)

Note1: Everything is dead slow on Windows11 Pro even outside ngscopeclient Note2: For other zoom steps everything is perfect rasterize time and tone map time < 1ms

1st zoom step which reproduce the issue

2nd zoom step (just +1) which reproduce the issue

Screenshot of the issue on Linux(Ubuntu 23.04) Ryzen 9 7950X3D/RTX4070 we see rasterize time exceed 200ms (and even more)

Note1: Everything is dead slow on Ubuntu 23.04 even outside ngscopeclient Note2: For other zoom step everything is perfect rasterize time and tone map time < 1ms

bvernoux commented 1 year ago

Tested with latest ngscopeclient commit https://github.com/glscopeclient/scopehal-apps/commit/fd4fa0d0de3e3173b8fdb22a0b01041e9830a4d9 and the issue is reproducible (tested only on Win11 Pro need to test on Ubuntu23.04)

For information on Windows: Tone map time is better < 1ms (most of the time) with that fix and only Rasterize time is >300ms and slow down everything.

1st zoom step huge slow down (race condition ?)

2nd zoom step huge slow down (race condition ?)

For Reference other step no slow down everything work fine 60fps

bvernoux commented 1 year ago

Issue fixed with commit https://github.com/glscopeclient/scopehal-apps/commit/2f4cf45ecabc29bc13efdab15c92856412601fd4

ngscopeclient / scopehal-apps