Well it looks like the problem was Windows Server 2019.  No idea where the problem lies, whether it's an OS or driver issue, but clearly there is a huge problem with this generation dell and 2019.  I Installed 2016 and it's flying now.  Thanks for firing your QA team and turning me into your beta tester Microsoft.
I recently purchased some new to me r620 servers for a cluster.  Mostly they will be doing heavy database transactions, but generally they will have Hyper-V vms doing a variety of work.  It was during the database work, that I started realizing that the servers were performing much worse than my old r710.  Since then I've swapped out controllers, nics, and drives in search of performance comparable to other diskmark tests on similar systems posted online.  Mostly my random single threaded performance seems to be horrible.  Changing the bios to Performance helped a lot, but I'm still running slow.  Enabling/Disabling read, write, and disk cache changes behavior, but does not alter performance radically either way.  Every update is applied, and using no read ahead/write back/disk cache enabled for tests (best results).  Am I missing something, could my CPU really be that much of a single thread bottleneck, or are my results normal?  Thanks for any advice! System:R620Dual E5-2650v2128GB (16x8GB PC3L-12800R)H710p mini mono5x Intel D3-S4610 960GB SSDs in Raid 5Intel X540 NIC Using CrystalMark 3 - 9/4GB:My systemRead / WriteSeq: 1018 / 1637512K: 743 / 11584K: 19 / 234k QD32: 204 / 75 Comparison system - [URL] / WriteSeq: 1855 / 1912512K: 1480 / 14194K: 34 / 514k QD32: 651 / 88 Using CrystalMark 6 - 2/100mb:my systemRead / WriteSeq Q32T1: 3022 / 34614k Q8T8: 335 / 2904K Q32T1: 210 / 1954K Q1T1: 32 / 30 Comparison system - [URL] / WriteSeq Q32T1: 554 / 2644k Q8T8: 314 / 2594K Q32T1: 316 / 2614K Q1T1: 33 / 115 Using CrystalMark 6 - 5/1GB:My systemRead / WriteSeq Q32T1: 2619 / 19574k Q8T8: 306 / 1324K Q32T1: 212 / 1164K Q1T1: 25 / 27 comparison system - r610, dual X5670, 128 GB 1600mhz ram, 4x Samsung 860 Pro 1TB raid 5, h700Read / WriteSeq Q32T1: 754 / 6854k Q8T8: 305 / 694K Q32T1: 262 / 694K Q1T1: 32 / 38
Poor single thread performance on R620