developing some addon currently and this drives me insane! Luckily i am not the only one…
Same problem here. Also Android app UI is extremely laggy.
I switched from hassio to debian 11 and it is fast as new 
Backup / Restore works great and took me nearly no work.
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After one week it is slow and unuseable again.
I’ve seen the same things since earlier this year on HASSOS. Here’s some example request timings when loading the logs:
| endpoint | time |
|---|---|
/api/hassio/addons/core_check_config/logs |
24.75s |
/api/hassio/supervisor/logs |
8.758s |
/api/hassio/addons/a0d7b954_zwavejs2mqtt/logs |
25.777s |
I’m on a Pi4 + USB3 SSD. In the past, logs would load in no more than a couple seconds (not enough to notice or think about). My HA instance is generally snappy and responsive.
so, this drove me absolutely nuts, but i guess I found a solution this time!
After some reading I found that my USB3 SATA Adapter was not the one I thought I bought. Seems like Amazon.de send out different on the same name.
I bought this: Amazon.de
And it seems to exist as 174c:55aa and (like mine): 174c:235c
hdparm showed me extremely low values. After disabling UAS I now get this:
root@homeassistant:/usr/share/hassio/share# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 542 MB in 3.00 seconds = 180.64 MB/sec
And for a pretty cheap SSD with a full running system, this is totally fine.
Logs are fast as desired now <3
This helped me: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this - Raspberry Pi Forums
I also have an SSD, and I checked the speeds with hdparm -t /dev/sda, I have not disabled UAS and I get the below:
Timing buffered disk reads: 637 MB in 3.15 seconds = 206.753 MB/s
My logs are all still extremely slow…
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give disabling UAS a try? 
This might be a total silly question, but it seems I don’t have hdparm at all on my installation (Raspberry 4).
Also, I don’t have e.g. apt-get to install it. How can I install hdparm?
I ran it by doing an SSH into the OS itself (port 22222).
Normal SSH goes into the HomeAssistant container.
Assuming you’re running HassOS…
This seems not to be possible on a Raspbian installation, at least remote. Might have to find an HDMI cable and boot it with keyboard & screen attached…
So booting with a screen & keyboard attached, I could run hdparm on the Raspberry installation. It says it read 716MB in 3 Seconds, which is ~250 MB/s. This should be more than sufficient, but as @Veldkornet wrote, it still feels much slower and less snappy than it did earlier…
Disabling UAS as @MaxW mentioned solved the issue with the logs for me. Also restarting the core and loading of the history is much faster, now. 
You’re right, the logs are fast again. Weird that my speeds didn’t seem to change though:
Timing buffered disk reads: 636 MB in 3.00 seconds = 217.004 MB/s
FYI, I have an Argon One M.2 with a Samsung M.2 SATA SSD and my cmdline.txt ended up looking like the below:
usb-storage.quirks=174c:55aa:u dwc_otg.lpm_enable=0 console=tty1
I might be wrong with the speed thing as proof, but I can recommend everyone with issues to try the UAS disabling thing.
I’m also running Home Assistant OS on a SSD. Reading the info on the raspberrypi forum mentions unplugging the SSD, but isn’t that impossible because the OS is running from that thing?
Could somebody write a little howto on disabling UAS on Home Assistant?
Thanks in advance!
I also run only an SSD, so I also did it in-place. This is what I did:
- SSH into HassOS, that’s port 22222 (not the HA container on port 22), I used this to enable 22222
- run
dmesg | usbAnd examine the Vendor ID (vid), Product ID (pid) As per the RPi forum post. Just have a look carefully here, my ConBee and ZStick were clearly marked as such on the usb1-1, so the only one left for me was the one on usb-2-2 (if you’re really unsure, maybe unplug all other usb devices and reboot the host, then check dmesg again). Example of mine:
[ 1.990062] usb 2-2: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 2.011145] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa, bcdDevice= 1.00
[ 2.011179] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 2.011205] usb 2-2: Product: Forty
[ 2.011228] usb 2-2: Manufacturer: Argon
[ 2.011251] usb 2-2: SerialNumber: 0000000000XX
- Edit the cmdline:
vi /mnt/boot/cmdline.txtAnd add the storage quirk at the beginning of the line, mine looked like this:usb-storage.quirks=174c:55aa:u dwc_otg.lpm_enable=0 console=tty1 - Save the file and reboot the host
- finished, if you SSH to 22222 again and run
dmesg | grep usbagain, you should see something like the below
[ 2.014012] usb 2-2: UAS is ignored for this device, using usb-storage instead
[ 2.014137] usb 2-2: UAS is ignored for this device, using usb-storage instead
[ 2.014169] usb-storage 2-2:1.0: USB Mass Storage device detected
[ 2.014740] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000
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Thank you very much for this HowTo!
But what is not clear to me is the reason that activated UAS is slower than deactivated UAS! And the strange thing is that it was fast with activated UAS with the first betas of Home Assistant OS 5 and also with later versions.
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same question. it worked for a long time (at least the last half year). Could not read something in release notes to HA OS 6.6 but it seemed it was the starting point of problems
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Thanks for all the explanations in here. One thing I’m wondering about though: Why is my SSD now faster than before when people write it’s supposed to be the opposite?
UAS enabled:
Timing buffered disk reads: 437 MB in 3.08 seconds = 144960 kB/s
UAS disabled
Timing buffered disk reads: 618 MB in 3.00 seconds = 210829 kB/s
It’s a Kingston A400 240 GB