What CPU are you using? It's presumably going to vary wildly from one CPU to another?
>* On 1 Sep 2016, at 08:52, Ali KIZIL <alikizil at gmail.com ><http://ffmpeg.org/mailman/listinfo/ffmpeg-devel>> wrote: * > >* Hi all, * > >* I tested P010LE pixel convertion from YUV420P in NVENC Main 10 HEVC UHD 50 * >* fps encoding on Nvidia Pascal Titan X GPU: * > >* Nvidia Pascal Titan X GPU can not reach to 50 fps on Main 10 P010LE HEVC * >* encoding: * > >* ffmpeg -loglevel verbose -i * >* /media/usb1/4k_sampels/Samsung_SUHD_Picture_Quality\ Demo_Nano_Crystal\ * >* Display_UK-Version.mp4 -c:v:0 nvenc_hevc -preset hp -cbr 1 -2pass 0 -r 50 * >* -vb 28000k -minrate 28000k -maxrate 28000k -bufsize 28000k -muxrate 30000k * >* -c:a:0 aac -b:a:0 192k -pix_fmt p010le 'udp://233.33.33.1:5001' * > >* FPS waves around 41-43 fps. If same command with YUV420P, it reaches to 120 * >* - 130 fps. * > >* GPU NVENC Load: * >* nvidia-smi dmon -i 0 * >* gpu pwr temp sm mem enc dec mclk pclkIdx W C % % % % MHz MHz * > >* 0 81 67 9 2 41 0 4513 1809 * >* 0 80 66 9 2 41 0 4513 1809 * >* 0 81 67 9 2 42 0 4513 1809 * >* 0 80 67 10 2 41 0 4513 1809 * >* 0 81 67 9 2 44 0 4513 1809 * > >* I think bottleneck is not at GPU side, pixel convertion maybe needs speed * >* up improvement. * > > >* If codec changed to rawvideo to test pixel format convertion performance * >* testing, FPS again waves around 39-40 fps * > > >* I wanted to state these test reults. * > > >* Kind Regards, * >* _______________________________________________ * >* ffmpeg-devel mailing list * >* ffmpeg-devel at ffmpeg.org <http://ffmpeg.org/mailman/listinfo/ffmpeg-devel> * >* http://ffmpeg.org/mailman/listinfo/ffmpeg-devel ><http://ffmpeg.org/mailman/listinfo/ffmpeg-devel> * The test is done on "Intel(R) Core(TM) i7-4960X CPU @ 3.60GHz" with 32 GB DDR3 (8pcs. x 4GB Kingston KHX2133C11D3) with Linux kizil105 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux. For memory dmidecode shows 1333 Mhz. I will check my BIOS settings if RAM speed set wrong and update the mail list. sudo dmidecode --type memory # dmidecode 2.12 # SMBIOS entry point at 0x000f04c0 SMBIOS 2.7 present. Handle 0x0029, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 96 GB Error Information Handle: Not Provided Number Of Devices: 4 Handle 0x002B, DMI type 17, 34 bytes Memory Device Array Handle: 0x0029 Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 8192 MB Form Factor: DIMM Set: None Locator: Node0_Dimm0 Bank Locator: Node0_Bank0 Type: DDR3 Type Detail: Unbuffered (Unregistered) Speed: 1333 MHz Manufacturer: Kingston Serial Number: 6A2AF2C5 Asset Tag: Dimm0_AssetTag Part Number: KHX2133C11D3/ Rank: 2 Configured Clock Speed: 1333 MHz As a final note, I will test same settings on a server with Dual Xeon E5- 2630 V4 with 64 GB (4 pcs x 16 GB) DDR4 2133 Mhz Ram. I will update for this as well. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
