You are a machine. My brain is stuck on windows for workgroups task sharing mode, you seem to be hyperthreading.
November 6, 2026 at 5:33 PM
You are a machine. My brain is stuck on windows for workgroups task sharing mode, you seem to be hyperthreading.
4 x86 vCPUs ≠ 4 ARM vCPUs
Hyperthreading, vector width, clock speed, and more all impact how Postgres performs.
Here's how to choose:
Hyperthreading, vector width, clock speed, and more all impact how Postgres performs.
Here's how to choose:
When to choose x86-64 vs aarch64 — PlanetScale
ARM and x86 can give you different performance at the same vCPU count. Here's what differs, what to measure, and how to choose.
planetscale.com
November 9, 2026 at 6:09 PM
4 x86 vCPUs ≠ 4 ARM vCPUs
Hyperthreading, vector width, clock speed, and more all impact how Postgres performs.
Here's how to choose:
Hyperthreading, vector width, clock speed, and more all impact how Postgres performs.
Here's how to choose:
That’s awesome! I think my dad had a Commodore. I know he also had a TI pc that had a slot on the right side next to the keyboard. I found it one day snooping. lol I eventually got my stepdads compaq. And that one was nice because it had a P4 with hyperthreading and 3.75 GB of usable DDR RAM lol!
November 4, 2026 at 1:33 AM
That’s awesome! I think my dad had a Commodore. I know he also had a TI pc that had a slot on the right side next to the keyboard. I found it one day snooping. lol I eventually got my stepdads compaq. And that one was nice because it had a P4 with hyperthreading and 3.75 GB of usable DDR RAM lol!
Yep, non-linear consequences. You can also successfully reduce reg pressure, increase the number of threads per core, successfully absorb standard latency, but now you're thrashing your cache, latency skyrockets and perf tanks.
This happens on CPUs too - disabling hyperthreading etc.
This happens on CPUs too - disabling hyperthreading etc.
October 20, 2026 at 7:10 PM
Yep, non-linear consequences. You can also successfully reduce reg pressure, increase the number of threads per core, successfully absorb standard latency, but now you're thrashing your cache, latency skyrockets and perf tanks.
This happens on CPUs too - disabling hyperthreading etc.
This happens on CPUs too - disabling hyperthreading etc.
Pretty surprised by the degree of negative effect of having SMT / hyperthreading enabled in this postgres readonly OLTP benchmark I have been running.
Scale 100, -S -M prepared, each client count run for 15s, on a 2x Xeon Gold 6442Y workstation.
Scale 100, -S -M prepared, each client count run for 15s, on a 2x Xeon Gold 6442Y workstation.
October 16, 2026 at 5:58 PM
Pretty surprised by the degree of negative effect of having SMT / hyperthreading enabled in this postgres readonly OLTP benchmark I have been running.
Scale 100, -S -M prepared, each client count run for 15s, on a 2x Xeon Gold 6442Y workstation.
Scale 100, -S -M prepared, each client count run for 15s, on a 2x Xeon Gold 6442Y workstation.
the vision in my mind at the time was definitely that I'd be able to pop open the virtual desktop and see like bonzai buddy freaking our, but pretty much all of it was just CPU usage getting pegged at 100% of whatever the vcpu was on my poor lil 2.4ghz pentium 4 with hyperthreading.
October 13, 2026 at 12:38 AM
the vision in my mind at the time was definitely that I'd be able to pop open the virtual desktop and see like bonzai buddy freaking our, but pretty much all of it was just CPU usage getting pegged at 100% of whatever the vcpu was on my poor lil 2.4ghz pentium 4 with hyperthreading.
gotta get this MF some hyperthreading
October 4, 2026 at 1:53 AM
gotta get this MF some hyperthreading
What if. Single core CPU in 2026.
Wait a minute, I can run this experiment by disabling all but one CPU core, and turning off hyperthreading!
Wait a minute, I can run this experiment by disabling all but one CPU core, and turning off hyperthreading!
September 14, 2026 at 1:56 AM
What if. Single core CPU in 2026.
Wait a minute, I can run this experiment by disabling all but one CPU core, and turning off hyperthreading!
Wait a minute, I can run this experiment by disabling all but one CPU core, and turning off hyperthreading!
hell it feels like it was just a few years ago that 5GHz was considered basically unreachable and now i could just like, buy one which boosts to 5.5GHz
and has 24 cores
my 7700K has 4 with hyperthreading and that still feels like a lot to me
and has 24 cores
my 7700K has 4 with hyperthreading and that still feels like a lot to me
September 10, 2026 at 2:07 PM
hell it feels like it was just a few years ago that 5GHz was considered basically unreachable and now i could just like, buy one which boosts to 5.5GHz
and has 24 cores
my 7700K has 4 with hyperthreading and that still feels like a lot to me
and has 24 cores
my 7700K has 4 with hyperthreading and that still feels like a lot to me
... and just a single core for that, no hyperthreading. 🙂
September 6, 2026 at 10:25 AM
... and just a single core for that, no hyperthreading. 🙂
Diamond Rapids brings 256 cores, PCIe Gen6 and drops hyperthreading, but Intel pushes launch back as it targets HPC and agentic AI workloads.
#AiCompute #DiamondRapids #HotChips #Hpc #Intel #PcieGen6 #Server #Xeon
#AiCompute #DiamondRapids #HotChips #Hpc #Intel #PcieGen6 #Server #Xeon
Intel Unveils 256-Core Xeon 7 at Hot Chips, Delays Launch to 2027
Diamond Rapids brings 256 cores, PCIe Gen6 and drops hyperthreading, but Intel pushes launch back as it targets HPC and agentic AI workloads.
pulseofnations.lol
August 26, 2026 at 10:20 PM
Diamond Rapids brings 256 cores, PCIe Gen6 and drops hyperthreading, but Intel pushes launch back as it targets HPC and agentic AI workloads.
#AiCompute #DiamondRapids #HotChips #Hpc #Intel #PcieGen6 #Server #Xeon
#AiCompute #DiamondRapids #HotChips #Hpc #Intel #PcieGen6 #Server #Xeon
Diamond Rapids Xeon 7 is delayed to 2027 and will ship with up to 256 performance cores, targeting only high-core-count HPC SKUs without hyperthreading.
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briefly.co
August 25, 2026 at 11:25 PM
Diamond Rapids Xeon 7 is delayed to 2027 and will ship with up to 256 performance cores, targeting only high-core-count HPC SKUs without hyperthreading.
And the test costs ten minutes, reversible:
echo off | sudo tee /sys/devices/system/cpu/smt/control
🛠️ podostack.com/p/hyperthre...
echo off | sudo tee /sys/devices/system/cpu/smt/control
🛠️ podostack.com/p/hyperthre...
Hyperthreading: the throughput win that costs you latency
Netflix turned SMT off on a 24xlarge and container launches got 20-30% faster, because two siblings fighting over one lock also fight over one core
podostack.com
August 17, 2026 at 1:56 PM
And the test costs ten minutes, reversible:
echo off | sudo tee /sys/devices/system/cpu/smt/control
🛠️ podostack.com/p/hyperthre...
echo off | sudo tee /sys/devices/system/cpu/smt/control
🛠️ podostack.com/p/hyperthre...
Netflix halved the logical core count on a 24xlarge and container launches got 20-30% faster.
SMT off. Every capacity model says that's the wrong direction.
podostack.com/p/hyperthre...
SMT off. Every capacity model says that's the wrong direction.
podostack.com/p/hyperthre...
Hyperthreading: the throughput win that costs you latency
Netflix turned SMT off on a 24xlarge and container launches got 20-30% faster, because two siblings fighting over one lock also fight over one core
podostack.com
August 17, 2026 at 1:56 PM
Netflix halved the logical core count on a 24xlarge and container launches got 20-30% faster.
SMT off. Every capacity model says that's the wrong direction.
podostack.com/p/hyperthre...
SMT off. Every capacity model says that's the wrong direction.
podostack.com/p/hyperthre...
Wait, what? You had to disable hyperthreading? That’s bizarre. Consumer Intel CPU hyperthreading’s been around for 20 years or more!
August 16, 2026 at 1:35 PM
Wait, what? You had to disable hyperthreading? That’s bizarre. Consumer Intel CPU hyperthreading’s been around for 20 years or more!
Had to disable hyperthreading in the bios just to get Wildlands running.
This better be worth it.
This better be worth it.
August 16, 2026 at 1:00 PM
Had to disable hyperthreading in the bios just to get Wildlands running.
This better be worth it.
This better be worth it.
…ocho que el ordenador muestra como 16 (hyperthreading, un truco cutre para mantener a cada núcleo más ocupado), pero sí. Para las cosas que se benefician de la ley de Amdahl, el beneficio es absurdo.
February 17, 2026 at 10:23 PM
…ocho que el ordenador muestra como 16 (hyperthreading, un truco cutre para mantener a cada núcleo más ocupado), pero sí. Para las cosas que se benefician de la ley de Amdahl, el beneficio es absurdo.
and then it wasnt until the i series that they realized "oh hyperthreading was a good idea actually"
November 17, 2024 at 8:51 PM
and then it wasnt until the i series that they realized "oh hyperthreading was a good idea actually"
I'm also curious to see if the i3 lineup will get a cluster of E-cores, especially now that hyperthreading is gone. Making a 4c4t CPU seems kind of not-the-move even for a budget chip, since all i3's since 10th gen have been 4c8t. 4p+4e 8t would be fine and probably a really nice MT uplift too.
November 25, 2024 at 7:00 PM
I'm also curious to see if the i3 lineup will get a cluster of E-cores, especially now that hyperthreading is gone. Making a 4c4t CPU seems kind of not-the-move even for a budget chip, since all i3's since 10th gen have been 4c8t. 4p+4e 8t would be fine and probably a really nice MT uplift too.
well why didn't you say that in the first place?
what i mean by that is that my brain cannot multi-task in the sense that I can't actually do 2 things at once easily, but I can hold about 3-4 different ongoing tasks in my mind and switch between them very rapidly (hyperthreading) to appear so
what i mean by that is that my brain cannot multi-task in the sense that I can't actually do 2 things at once easily, but I can hold about 3-4 different ongoing tasks in my mind and switch between them very rapidly (hyperthreading) to appear so
October 8, 2025 at 1:29 AM
well why didn't you say that in the first place?
what i mean by that is that my brain cannot multi-task in the sense that I can't actually do 2 things at once easily, but I can hold about 3-4 different ongoing tasks in my mind and switch between them very rapidly (hyperthreading) to appear so
what i mean by that is that my brain cannot multi-task in the sense that I can't actually do 2 things at once easily, but I can hold about 3-4 different ongoing tasks in my mind and switch between them very rapidly (hyperthreading) to appear so
I'm OFF my ADHD meds and I've gotten my superpowers back!
I am more productive, better at hyperthreading tasks, and more ANNOYING! truly unstoppable.
I am more productive, better at hyperthreading tasks, and more ANNOYING! truly unstoppable.
October 8, 2025 at 12:12 AM
I'm OFF my ADHD meds and I've gotten my superpowers back!
I am more productive, better at hyperthreading tasks, and more ANNOYING! truly unstoppable.
I am more productive, better at hyperthreading tasks, and more ANNOYING! truly unstoppable.