I was trying to stream Delver, which is a little FPS roguelike written in Java, but for some reason using OBS to record kills the game's framerate. Window/monitor/game capture all have the same problem.
I was watching task manager while I was fiddling with priorities/affinities and I noticed that for some reason Java's CPU usage goes way down while I record with OBS. Without OBS recording, the Java process is pegged at 25% (one of my four cores) and overall my CPU use when I was testing was 30-40%. If I start recording, Java drops down to 5-8% with 25-30% total CPU use. This happens even if I preview and tell OBS to not encode the preview. If I tab out of the game so OBS isn't actually recording it (and is getting some other window) the CPU use goes back up to 25%. Tab back in and it goes down.
I tried out Minecraft to test and I have the same issue there. I'm running 32-bit Java 7u45. I don't have this problem with any other games I've streamed. Is there any other information I can provide?
I was watching task manager while I was fiddling with priorities/affinities and I noticed that for some reason Java's CPU usage goes way down while I record with OBS. Without OBS recording, the Java process is pegged at 25% (one of my four cores) and overall my CPU use when I was testing was 30-40%. If I start recording, Java drops down to 5-8% with 25-30% total CPU use. This happens even if I preview and tell OBS to not encode the preview. If I tab out of the game so OBS isn't actually recording it (and is getting some other window) the CPU use goes back up to 25%. Tab back in and it goes down.
I tried out Minecraft to test and I have the same issue there. I'm running 32-bit Java 7u45. I don't have this problem with any other games I've streamed. Is there any other information I can provide?
Code:
12:44:15: Open Broadcaster Software v0.592b - 32bit (´・ω・｀)
12:44:15: -------------------------------
12:44:15: CPU Name: Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz
12:44:15: CPU Speed: 3292MHz
12:44:15: Physical Memory: 4095MB Total, 4095MB Free
12:44:15: stepping id: 7, model 42, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 4, total cores 4
12:44:15: monitor 1: pos={-1600, 300}, size={1600, 900}
12:44:15: monitor 2: pos={0, 0}, size={1600, 1200}
12:44:15: Windows Version: 6.1 Build 7601 S
12:44:15: Aero is Disabled
12:44:15: -------------------------------
12:44:15: OBS Modules:
12:44:15: Base Address Module
12:44:15: 00290000 OBS.exe
12:44:15: 60D20000 OBSApi.dll
12:44:15: 689D0000 DShowPlugin.dll
12:44:15: 6A740000 GraphicsCapture.dll
12:44:15: 693C0000 NoiseGate.dll
12:44:15: 67DB0000 PSVPlugin.dll
12:44:15: ------------------------------------------
12:44:15: Adapter 1
12:44:15: Video Adapter: AMD Radeon HD 6800 Series
12:44:15: Video Adapter Dedicated Video Memory: 1051422720
12:44:15: Video Adapter Shared System Memory: 3243479040
12:44:15: Video Adapter Output 1: pos={0, 0}, size={1600, 1200}, attached=true
12:44:15: Video Adapter Output 2: pos={-1600, 300}, size={1600, 900}, attached=true
12:44:15: =====Stream Start: 2014-01-11, 12:44:15===============================================
12:44:15: Multithreaded optimizations: On
12:44:15: Base resolution: 1600x1181
12:44:15: Output resolution: 1064x786
12:44:15: ------------------------------------------
12:44:15: Loading up D3D10 on AMD Radeon HD 6800 Series (Adapter 1)...
12:44:15: ------------------------------------------
12:44:15: Audio Format: 44100hz
12:44:15: Playback device Default
12:44:15: ------------------------------------------
12:44:15: Using desktop audio input: Line 1 (Virtual Audio Cable)
12:44:15: ------------------------------------------
12:44:15: Using auxilary audio input: Microphone (Realtek High Definition Audio)
12:44:15: ------------------------------------------
12:44:15: Audio Encoding: MP3
12:44:15: bitrate: 64
12:44:15: Using graphics capture
12:44:15: Using text output
12:44:15: Scene buffering time set to 100
12:44:15: ------------------------------------------
12:44:15: Video Encoding: x264
12:44:15: fps: 30
12:44:15: width: 1064, height: 786
12:44:15: preset: veryfast
12:44:15: profile: high
12:44:15: keyint: 60
12:44:15: CBR: yes
12:44:15: CFR: no
12:44:15: max bitrate: 400
12:44:15: buffer size: 400
12:44:15: ------------------------------------------
12:44:15: MMDeviceAudioSource: Frequency for device 'Line 1 (Virtual Audio Cable)' is 352800, samples per sec is 44100
12:44:15: MMDeviceAudioSource: Frequency for device 'Microphone (Realtek High Definition Audio)' is 352800, samples per sec is 44100
12:44:15: SharedTexCapture hooked
12:45:11: Using Window Capture
12:45:12: Total frames encoded: 1709, total frames duplicated: 41 (2.40%)
12:45:12: Total frames rendered: 1708, number of late frames: 3 (0.18%) (it's okay for some frames to be late)
12:45:12:
12:45:12: Profiler time results:
12:45:12:
12:45:12: ==============================================================
12:45:12: video thread frame - [100%] [avg time: 2.12 ms] [children: 78.2%] [unaccounted: 21.8%]
12:45:12: | scene->Preprocess - [25.9%] [avg time: 0.55 ms]
12:45:12: | GPU download and conversion - [52.2%] [avg time: 1.107 ms] [children: 5.09%] [unaccounted: 47.1%]
12:45:12: | | flush - [0.708%] [avg time: 0.015 ms]
12:45:12: | | CopyResource - [0.755%] [avg time: 0.016 ms]
12:45:12: | | conversion to 4:2:0 - [3.63%] [avg time: 0.077 ms]
12:45:12: Convert444Threads - [100%] [avg time: 0.259 ms] [children: 99.2%] [unaccounted: 0.772%]
12:45:12: | Convert444toNV12 - [99.2%] [avg time: 0.257 ms]
12:45:12: encoder thread frame - [100%] [avg time: 12.628 ms]
12:45:12: ==============================================================
12:45:12:
12:45:12:
12:45:12: Profiler CPU results:
12:45:12:
12:45:12: ==============================================================
12:45:12: video thread frame - [cpu time: avg 0.237 ms, total 405.602 ms] [avg calls per frame: 1]
12:45:12: | scene->Preprocess - [cpu time: avg 0.045 ms, total 78 ms] [avg calls per frame: 1]
12:45:12: | GPU download and conversion - [cpu time: avg 0.054 ms, total 93.601 ms] [avg calls per frame: 1]
12:45:12: | | flush - [cpu time: avg 0.009 ms, total 15.6 ms] [avg calls per frame: 1]
12:45:12: | | CopyResource - [cpu time: avg 0.036 ms, total 62.401 ms] [avg calls per frame: 1]
12:45:12: | | conversion to 4:2:0 - [cpu time: avg 0.009 ms, total 15.6 ms] [avg calls per frame: 1]
12:45:12: Convert444Threads - [cpu time: avg 0.238 ms, total 811.204 ms] [avg calls per frame: 2]
12:45:12: | Convert444toNV12 - [cpu time: avg 0.238 ms, total 811.204 ms] [avg calls per frame: 2]
12:45:12: encoder thread frame - [cpu time: avg 12.006 ms, total 20482.9 ms] [avg calls per frame: 1]
12:45:12: ==============================================================
12:45:12:
12:45:12: =====Stream End: 2014-01-11, 12:45:12=================================================