bladebit
bladebit copied to clipboard
Chia-Network
Tracking performance discrepancies on Windows vs Linux
User Reythia on reddit provided timings for several timings for tests he ran, showing severe performance deficiencies, especially during Phase 1 sort, when running on windows as compared to Linux (even on WSL better results were obtained):
| Time - seconds | Windows (v1.2.0) | WSL (v1.2.0) | WSL (v1.1.0 control) |
|---|---|---|---|
| Phase 1 | 954 | 324 | 324 |
| of which sorting | 848 | 194 | 191 |
| Phase 2 | 32 | 32 | 32 |
| Phase 3 | 372 | 175 | 175 |
| Phase 4 | 0.7 | 0.7 | 0.7 |
| Total | 1363 | 560 | 560 |
| -m | --no-cpu... | -m --no-cpu | WSL | WSL -m | ||
|---|---|---|---|---|---|---|
| Phase 1 | 954 | 468 | 604 | 649 | 295 | 302 |
| sorting | 848 | 358 | 481 | 525 | 172 | 177 |
| other | 106 | 110 | 123 | 124 | 123 | 125 |
| Phase 2 | 32 | 32 | 32 | 32 | 32 | 32 |
| Phase 3 | 372 | 228 | 177 | 176 | 172 | 172 |
| Phase 4 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| Total | 1363 | 730 | 817 | 860 | 526 | 533 |
Tests performed on:
Threadripper 3995wx with RAM @ 3200MHz. Output drive is an NVME RAID 0. Windows Enterprise.
can you share hardware specs?
I don't have them, but did ask the reddit user to see if he's willing to share them.
Thanks for the info on your system. That is Ubuntu, however. Have you happened to have run this on Windows? Interesting that you are getting 46 second faster times on Linux, though.
harold-b something (?) is off on your Threadripper 3995wx with ?? RAM @ 3200MHz.. Would seem you should get far better results. With a straight Win 10 Pro 3955WX setup (16C/32T 128GB 3200MHz Sam 980 Pro) my best time for k32 has been 840 sec (vs your 1340 sec). I posted about it here w/logs https://github.com/Chia-Network/bladebit/discussions/186#discussioncomment-3743524 ... showing more typical ave result over time of 14.8 minutes (886 sec). Have done many days' of these plots approx 100TB. J Pls be aware plots are made with Windows BB Disk v2 for MMX, not Chia, but should be similar, if not identical for Chia AFAIK.
These are Reythia's windows-specific times w/ BB RAM. There's an apparent performance issue with memory bandwidth on windows machines. I have the same setup which gets ~300 second plot times on CentOS Stream 8 BB RAM. BB disk comes out at around 8-9 minutes, same OS and system.
@harold-b this is just some sort of system performance issue? Can we close?
