So you’ve got a beast of a machine with 64GB of RAM and you’re ready to run Ubuntu Studio. That’s a serious audio and video production workstation. You’re probably staring at the partition screen during installation, wondering what number to punch in for the swap partition size.

Here’s the short answer, and then the long, “why you should trust me” answer: For the vast majority of professional workloads, a swap partition of 16GB to 32GB is optimal. But if you plan on hibernating your machine, it’s a completely different ballgame. Let’s unpack that.

Look—the old “double your RAM” rule is a fossil from 1995. It’s dead. Bury it. With 64GB of RAM, you have enough memory to run an entire orchestra of plugins, dozens of browser tabs, and a full video editing timeline without breaking a sweat. Your system will only touch swap if something goes catastrophically wrong. But “catastrophically wrong” is exactly what we need to plan for, otherwise a single runaway process can lock your entire session.

Why the Old Rule (2x RAM) Fails Spectacularly

The classic advice to set swap to double your physical memory came from an era when 256MB of RAM was common. Hibernation required dumping all of RAM to disk. And memory was expensive. None of that holds true for a modern Ubuntu Studio workstation.

Hibernation vs. Memory Pressure (Two Different Beasts)

If you want to use suspend-to-disk (hibernate), you need a swap partition at least the size of your used RAM. For 64GB RAM, that sounds like a nightmare. But here’s the kicker: with that much memory, hibernation is often overkill. Most creators leave their machines running for days or weeks. You’re not saving battery life on a desktop.

- For hibernation: You need a swap partition equal to your RAM allowance (64GB) plus maybe 10-20% overhead for system structures. Honestly, if you’re hibernating with 64GB, allocate 68GB. - For crash recovery and memory pressure: A 16GB swap is more than enough. It acts as a safety net for a kernel panic or an OOM (out-of-memory) situation.

The real danger scenario is a memory leak in a plugin or a DAW. I’ve seen Ardour or Reaper eat 40GB of RAM and then crash. Without any swap, the kernel panics. You lose your project. With a decent swap, the system slows down to a crawl (giving you time to save) or the OOM killer targets the leaky process instead of your entire session.

The Linux Kernel’s Swappiness Quirk

Ubuntu Studio comes with a low swappiness value by default (usually 10 or 60). With 64GB RAM, you can set it even lower. I set mine to `vm.swappiness=1`. This tells the kernel: “only touch swap if you’re literally dying.”

But here’s the human truth: even with swappiness at 1, the kernel still needs swap space defined. Why? Because it uses it for memory caches and to move infrequently used pages out of the way. A swap partition size of 8GB here would be technically functional but risky. You’re leaving yourself zero headroom for a kernel dump or a sudden spike.

The Practical Recommendation for 64GB RAM

Let’s cut through the noise. You’re running Ubuntu Studio which means real-time audio kernel, JACK, PulseAudio, and likely GPU-accelerated video rendering. Here’s what I actually do with clients’ workstations.

For Most Users: 16GB Swap Partition

Create a distinct swap partition of 16GB at the beginning of your drive (or after the EFI partition). With 64GB RAM, this gives you: - Enough space for a kernel crash dump (kdump requires about 12GB). - A buffer for a runaway app without triggering an immediate system freeze. - Fast paging because you’re rarely using it; the partition stays cold.

Use `sudo swapon --show` later to confirm it’s active. And don’t overthink it. Seriously. A 16GB swap partition on a 1TB NVMe drive is a drop in the bucket.

For System Administrators or Heavy Hibernate Users: 68GB

If you absolutely must hibernate your machine (maybe you have a UPS and want to save state during a power outage), then allocate a dedicated swap partition of 68GB. This handles the full 64GB RAM dump plus the usual kernel overhead. I recommend making this swap partition the last one on the drive so it’s easy to shrink later if you upgrade RAM.

Honestly? I rarely see professional audio engineers hibernate. They save projects manually like it’s a reflex. But video editors sometimes want to resume a render instantly. You know your workflow.

The “You Don’t Need Swap” Trap

I hear it every week: “With 64GB RAM, who needs swap?” Don’t fall for it. Modern Linux distributions require swap for proper memory management. Even if you never use it, the kernel expects a swap area. Without it, certain memory allocation patterns can lead to unpredictable behavior. Also, systemd’s `systemd-logind` may fail to handle suspend/resume properly.

The SSD Factor and Wear Leveling

You’re likely installing Ubuntu Studio on a high-end NVMe drive. People worry about swap killing their SSD. Let’s do the math.

Write Endurance Is Not a Concern

A modern Samsung 990 Pro has a 600 TBW (terabytes written) rating for a 1TB model. Writing your entire swap partition of 16GB every day would take 37 years to hit that limit. And you’re not writing to it daily. With 64GB RAM, you’ll write to swap maybe once a week (if that).

So relax. The wear argument is FUD from 2010. Your SSD will die of old age before swap kills it.

Swapfile vs. Partition on Ubuntu Studio

Ubuntu Studio’s installer typically defaults to a swap file instead of a partition. That’s fine if you’re a casual user. But I always recommend a dedicated swap partition for critical workstations. Why? - A swap partition has no file system overhead. It’s raw block device access. - Resizing a partition later is easier than resizing a file on a Btrfs or ext4 drive. - Hibernation is more reliable with a partition (some kernels have bugs with swap files and resume).

Create a 16GB swap partition. It’s a firewall between your projects and a kernel crash.

Do Not Use ZRAM as a Replacement

Some experts push ZRAM (compressed RAM-based swap) for machines with lots of memory. It’s fine for laptops with 8GB. With 64GB RAM, it’s unnecessary and actually adds CPU overhead during memory pressure. You have plenty of physical memory; let the kernel use it directly. Stick to a traditional swap partition.

Common Questions About the Recommended Swap Partition Size for Ubuntu Studio with 64GB RAM

Can I skip swap entirely and just use Zswap or ZRAM?

Technically yes, but you lose the ability to hibernate and risk kernel panics on full memory. With 64GB RAM, Zswap adds complexity without benefit. Just use a standard 16GB swap partition.

Will a 4GB swap partition work with 64GB?

It will boot, but it’s pointless. A 4GB swap partition cannot hold a crash dump from a system with 64GB RAM. You’ll get a kernel panic instead of a useful core dump. Go with 16GB minimum.

Does using a swap partition reduce performance for real-time audio?

Not at all. The kernel only accesses swap when physical memory is exhausted. With 64GB RAM, you’ll never hit that in normal audio work. The performance penalty is zero because the swap partition stays idle.

What tool should I use to create the swap partition after installation?

Use `gparted` from the live USB or `sudo swapon /dev/nvme0n1pX` after creating the partition with `fdisk`. Make sure to set the partition type to `82` (Linux swap) and use `mkswap` to format it.

If I upgrade to 128GB RAM later, do I need to resize swap?

Not necessarily. Your 16GB swap partition still serves the same purpose: crash dump safety net and hibernation (if you don’t hibernate). If you start hibernating with 128GB, then yes, you need to resize. Otherwise, leave it alone.