I’m Not Getting 1MS Polling on My Dualsense 5 - Wrong, It Was Fine the Whole Time. Doh.

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Malor
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I’m Not Getting 1MS Polling on My Dualsense 5 - Wrong, It Was Fine the Whole Time. Doh.

Unread post by Malor »

I bought a DualSense 5 because the latency figures were so good in the input database, but I'm don't think I'm able to get anything like a 2ms response time, because the Mister isn't polling the joystick fast enough.

This is my u-boot.txt:

Code: Select all

ethaddr=[redacted]
v=loglevel=4 usbhid.jspoll=1 xpad.cpoll=1

When I do a lsusb -v on my DS5 controller, what I'm expecting to see is bInterval=1, indicating 1000Hz polling. Instead, I'm showing bInterval of 4 for the audio devices, and 6 for my input devices. I think this is 32ms polling, a heck of a long way from 2ms.

This is the lsusb -v for the DS5:

Code: Select all

Bus 001 Device 007: ID 054c:0ce6 Sony Corp. Wireless Controller
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x054c Sony Corp.
  idProduct          0x0ce6 
  bcdDevice            1.00
  iManufacturer           1 Sony Interactive Entertainment
  iProduct                2 Wireless Controller
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x00e3
    bNumInterfaces          4
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol      0 
      iInterface              0 
      AudioControl Interface Descriptor:
        bLength                10
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength       0x0049
        bInCollection           2
        baInterfaceNr(0)        1
        baInterfaceNr(1)        2
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          6
        bNrChannels             4
        wChannelConfig     0x0033
          Left Front (L)
          Right Front (R)
          Left Surround (LS)
          Right Surround (RS)
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 2
        bSourceID               1
        bControlSize            1
        bmaControls(0)       0x03
          Mute Control
          Volume Control
        bmaControls(1)       0x00
        bmaControls(2)       0x00
        bmaControls(3)       0x00
        bmaControls(4)       0x00
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             3
        wTerminalType      0x0301 Speaker
        bAssocTerminal          4
        bSourceID               2
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             4
        wTerminalType      0x0402 Headset
        bAssocTerminal          3
        bNrChannels             2
        wChannelConfig     0x0003
          Left Front (L)
          Right Front (R)
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 5
        bSourceID               4
        bControlSize            1
        bmaControls(0)       0x03
          Mute Control
          Volume Control
        bmaControls(1)       0x00
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             6
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          1
        bSourceID               5
        iTerminal               0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           1
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             4
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        48000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            9
          Transfer Type            Isochronous
          Synch Type               Adaptive
          Usage Type               Data
        wMaxPacketSize     0x0188  1x 392 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           6
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        48000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x00c4  1x 196 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     273
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               6
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               6
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

Again, I see bInterval rates of only 4 and 6. Does anyone know what's going on and why?

(edit: I know it's not the switchbox I'm using, because my keyboard and mouse both correctly show bIntervals of 1, running through the same hub.)

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Akuma
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Re: I’m Not Getting 1MS Polling on My Dualsense 5 - Wrong, It Was Fine the Whole Time. Doh.

Unread post by Akuma »

I assume you know there is a difference in response time between wired and wireless(bt) ?

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Malor
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Re: I’m Not Getting 1MS Polling on My Dualsense 5 - Wrong, It Was Fine the Whole Time. Doh.

Unread post by Malor »

The input lag database says 1.6ms response time, wired mode, and that's the way I'm using it.

I don't understand how they could possibly have gotten that figure. Is the controller lag database untrustworthy?

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zakk4223
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Re: I’m Not Getting 1MS Polling on My Dualsense 5 - Wrong, It Was Fine the Whole Time. Doh.

Unread post by zakk4223 »

bInterval is what the device claims to support in the HID report(s). jspoll changes that polling interval (via configuring the USB interrupt URB interval) internally in the kernel. You will not see that reflected in the bInterval value. You will see it in logs, though. (dmesg etc).

[19032.232409] HID usage: 0x00010005, original interval: 6
[19032.232438] JS: endpoint->bInterval=6, interval=1
[19032.232448] HID usage: 0x00010005, applied interval: 1
[19032.232458] HID usage: 0x00010005, original interval: 6
[19032.232466] JS: endpoint->bInterval=6, interval=1
[19032.232472] HID usage: 0x00010005, applied interval: 1

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jca
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Re: I’m Not Getting 1MS Polling on My Dualsense 5 - Wrong, It Was Fine the Whole Time. Doh.

Unread post by jca »

Thanks for this information. After @Malor first post I checked on my system and was also perplexed. I was wondering if binterval was the right thing to check but due to my lack of knowledge with USB I refrained to comment.
I now checked with dmesg and everything is fine.
I also have another question:
Between the controller and MISTer there is the USB controller and the USB hub. Do these have any effect on polling?

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Malor
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Re: I’m Not Getting 1MS Polling on My Dualsense 5 - Wrong, It Was Fine the Whole Time. Doh.

Unread post by Malor »

Aha! Thank you. I do indeed have those messages. I'm old and slow enough that I probably wouldn't have actually noticed a 32ms polling time, but I've been telling people that the DS5 is a good, low-latency controller, and I was worried that I'd been giving bad advice. I hate giving bad advice.

Thanks for clearing that up!

jca: if you're using the official Mister hub, I'm pretty sure it's designed to be super low latency, but I don't remember where I read that.

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