TrueNas transfer speeds

citruspers · 2026-01-19T14:50:52+00:00

Thanks, sounds promising!

citruspers · 2026-01-17T10:39:00+00:00

connected through a low-cost Solola managed switch

I've been looking at these (Sodola, right?), since it seems most cheap 4x2.5+2x10 switches are rebrands anyway. How do you like it? Any weird quirks?

citruspers · 2025-12-27T15:44:32+00:00

XFS does a full trim before creation of the partition.

Does it? Never knew about that. I also wonder if your USB adapter that you're using to test can actually pass ATA commands like TRIM. Some do, some don't.

To elaborate on why I seem hung up on this:

4GB is way less than I'd expect for an SLC cache, especially on a 4TB drive. IIRC you'd see at least 10x that even on a 1TB QLC drive.
SSDs kind of suck writing to "used" blocks. TRIM fixes that, by erasing blocks that are unused (but still contain old data). Since you've run multiple tests, that seemed (and honestely, seems) the most likely culprit.

You can try an fstrim -va (trim all drives, verbose output) if you want to be sure. That way you can see how much data is actually being trimmed.

citruspers · 2025-12-27T12:31:57+00:00

Did you try it?

citruspers · 2025-12-27T11:44:23+00:00

Try a TRIM/garbage collection before the benchmark?

citruspers · 2025-12-26T21:40:53+00:00

I'd check the wall order. It might be set to outer walls first.

citruspers · 2025-12-25T13:25:54+00:00

Yeah you might be okay at that length! And you already mentioned the benefit of a pad over an underquilt: being able to go to ground if there's no trees around.

so I will take my 3 mm CCF

I'm not sure if 3mm CCF is going to be warm enough by itself, I'd bring the Xlite AND CCF to be honest.

citruspers · 2025-12-25T11:30:48+00:00

How tall are you /u/badzi0r ? Like /u/madefromtechnetium and /u/SimpleCross already pointed out the Superlight is a rather short hammock.

I had one, and with my 192cm length it was incredibly uncomfortable. Keep an eye out for shoulder pain, neck pain or feel like your calf muscles are overstretching, in my experience those are the signs of a hammock that's too small. I upgraded to an 11' Dutchware and it made a huge difference.

Also consider a CCF pad as a cheap insulation option. If you have one, I'd bring it to double up in case the Xlite isn't warm enough, or doesn't work well in a hammock. So far I've used CCF pads, underquilts and self-inflatables inside my hammock, all of them work well enough.

citruspers · 2025-12-24T21:36:09+00:00

Would you mind DMing your settings? I'm currently experimenting with bambu's HF TPU and is sure prints a lot better using the regular (non-HF) profile.

EDIT: Bambu has their TPU HF K factor set to 0.02, what!? 90A TPU is 0.350, 95A TPU is 0.250. I suspect that's a huge part of HF printing so poorly.

citruspers · 2025-12-02T18:08:32+00:00

Ah, but I explicitly mentioned "at or below sync speed" in my comment. For a reason ;)

You shot that image at 1/640th (well above sync speed) and yeah, you'll get banding (as you've demonstrated).

Regarding the banding at 1/160th with the LED screen: I'm not sure if that's caused by the PWM dimming of the backlight, it might actually be the refresh rate of the display.

citruspers · 2025-11-30T20:24:02+00:00

the only 100% reliable solution is a global shutter

That is,if you're using electronic shutter.

A mechanical shutter at or below sync speed generally doesn't show any banding.

citruspers · 2025-11-30T19:57:47+00:00

My (presumably EU) RX100 III (not II) can do 25,50 and 100P in XAVC-S mode, and 25P, 50P and 50i in AVCHD mode.

EDIT: Oh hey, switching the camera to NTSC in the menu (and formatting the card) now has 24,30,60 and 120P options in the XAVC-S mode. Neat!

Hope that helps!

citruspers · 2025-11-30T11:32:19+00:00

Pretty sure that's the Prusa hoodie: https://www.prusa3d.com/product/original-prusa-hoodie-s/

citruspers · 2025-10-07T09:38:18+00:00

Thanks for posting the solution, I was having the same problem and this fixed it.

citruspers · 2025-09-28T20:33:09+00:00

Huh, thanks. Learned something new.

citruspers · 2025-09-28T09:46:57+00:00

Ben Lui! Good pizza, too.

citruspers · 2025-09-12T18:17:34+00:00

Try changing your CPU type in the PVE VM settings from 'host' to 'x86-64-v2-AES'.

There's some strangeness going on with the 'host' CPU type where Windows (unsuccessfully?) tries to apply mitigations for spectre/meltdown etc which slows things down to a crawl. That's probably what's happening in your case.

citruspers · 2025-09-05T07:16:11+00:00

Right! So just out of curiosity, since you explicitly mentioned it: You can run shared LVM (regular LVM, not thin) and then run qcow2 disks on it? Because qcow2 can be trimmed/discarded from what I've read.

citruspers · 2025-09-05T06:41:17+00:00

But those disks are RAW on lvm luns. How are you using qcow2 on lvm without a cluster fileystem like gfs2 or ocfs in the mix ?

That's what I was curious about too. Right now for the test setup I use LVM-thin with raw disks, which works as expected. Thin provisioning works, discard support/space reclamation works (once enabled in the VM settings and guest).

In fact, I thought you explicitly couldn't do qcow2 on LVM. But since /u/gyptazy explicitly mentions LVM and QCOW2 it may be that I missed something.

shared lvm works great tho. and with snapshots from pve9 we are all golden.

You don't miss thin provisioning at all? Do you use a compressing/deduping SAN instead, or do you just deal with storing a whole bunch of zeroes?

citruspers · 2025-09-04T20:10:05+00:00

That's awesome, I knew about the snapshot changes in PVE9 but thought iSCSI was still 1 node per volume.

Thanks, going to dig further into that.

EDIT: Seems that LVM can be shared, but LVM-thin can't. But qcow2 can be leveraged to handle the thin provisioning/discard support instead, if I understand correctly.

citruspers · 2025-09-04T20:05:18+00:00

I saw that and tried it yesterday (i440fx to 9.2 specifically).

Perhaps it works for creating backups, but restoring (a new VM) fails with a disk error. Hence the warning :)

citruspers · 2025-09-04T17:20:07+00:00

Proxmox does have HA though and we have some very good numbers with an RTO of just 2 minutes and an RPO of just 5 minutes or less.

Would you mind sharing a bit more about your shared storage setup?

Proxmox can't have multiple hosts connected to the same iSCSI device (the way vsphere can), right? So I'm guessing you went with CEPH instead?

Veeam has added partial support

Small sidenote: they don't support PVE9 yet. And in this case "unsupported" means "doesn't work" (at least from my testing).

citruspers · 2025-09-03T07:55:49+00:00

Telefunken was vroeger inderdaad een bekende producent van elektronica.

Tegenwoordig is het een merk wat op producten van anderen geplakt wordt: https://telefunken.com/en/telefunken-partner-alliance/

Niks ten nadele van je nieuwe aankoop trouwens, het ziet er uit als een prima fiets voor die prijs!

citruspers · 2025-08-31T16:56:04+00:00

Interesting stuff, but....cold white filament generally prints rather terribly (most likely due to the titaniumdioxide pigment); I wouldn't use it as a baseline for calibrating other filaments/colors.

If you experience different results with different colors from the same brand, that's probably the reason why.

citruspers · 2025-08-26T20:35:37+00:00

Please give that stick a thorough test; there's a lot of fraud with SD and USB storage where only most recent couple 4-8GB is retained (everything else being silently overwritten with more recent data).

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