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Reload this Page Issue with the priority of the sound cards using rtirq

 
 
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Old 04-29-2012, 07:44 AM
Ralf Mardorf
 
Default Issue with the priority of the sound cards using rtirq
Hi



how can I give my sound cards high priority on Ubuntu Studio Precise?



This is how it should be:

spinymouse@avlinux:~$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

* 384 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

1102 FF***** 85** - 125* 0.0 S*** irq/18-hdspm

1123 FF***** 80** - 120* 0.0 S*** irq/20-ICE1712

1135 FF***** 80** - 120* 0.0 S*** irq/21-ICE1712



This is how it is:

spinymouse@precise:~$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

** 92 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

** 85 FF***** 85** - 125* 0.0 S*** irq/18-ohci_hcd

** 89 FF***** 84** - 124* 0.0 S*** irq/18-ohci_hcd

* 666 FF***** 83** - 123* 0.0 S*** irq/18-snd_hdsp

1175 FF***** 82** - 122* 0.8 S*** irq/18-nvidia

* 681 FF***** 80** - 120* 0.0 S*** irq/20-snd_ice1

* 688 FF***** 80** - 120* 0.0 S*** irq/21-snd_ice1



For more information take a look at [1].



Regards,

Ralf



PS: Sorry, HTML makes the terminal output easier to read and crossposting, since this issue might not be related to Ubuntu Studio only.



[1]

spinymouse@precise:~$ cat /proc/interrupts

********** CPU0****** CPU1******

* 0:******* 126******* 152** IO-APIC-edge***** timer

* 1:****** 2269******** 28** IO-APIC-edge***** i8042

* 7:********* 1********* 0** IO-APIC-edge***** parport0

* 8:********* 0********* 1** IO-APIC-edge***** rtc0

* 9:********* 0********* 0** IO-APIC-fasteoi** acpi

14:********* 0********* 0** IO-APIC-edge***** pata_atiixp

15:********* 0********* 0** IO-APIC-edge***** pata_atiixp

16:*** 4582994******* 229** IO-APIC-fasteoi** ohci_hcd:usb2

17:********* 0********* 2** IO-APIC-fasteoi** ohci_hcd:usb3, ohci_hcd:usb5

18:****** 3647*** 4131133** IO-APIC-fasteoi** ohci_hcd:usb4, ohci_hcd:usb6, snd_hdspm, nvidia

19:**** 142422****** 2999** IO-APIC-fasteoi** ehci_hcd:usb1

20:******** 69******** 86** IO-APIC-fasteoi** snd_ice1712

21:********* 0******* 151** IO-APIC-fasteoi** snd_ice1712

22:***** 80791***** 10460** IO-APIC-fasteoi** ahci, firewire_ohci

43:***** 38196******** 38** PCI-MSI-edge***** eth0

NMI:********* 0********* 0** Non-maskable interrupts

LOC:** 45574437** 45561286** Local timer interrupts

SPU:********* 0********* 0** Spurious interrupts

PMI:********* 0********* 0** Performance monitoring interrupts

IWI:********* 0********* 0** IRQ work interrupts

RES:**** 875583*** 1058458** Rescheduling interrupts

CAL:****** 3500****** 3436** Function call interrupts

TLB:***** 20222***** 18729** TLB shootdowns

TRM:********* 0********* 0** Thermal event interrupts

THR:********* 0********* 0** Threshold APIC interrupts

MCE:********* 0********* 0** Machine check exceptions

MCP:******* 152******* 152** Machine check polls

ERR:********* 0

MIS:********* 0



spinymouse@precise:~$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

** 92 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

* 650 FF***** 85** - 125* 0.0 S*** irq/20-snd_ice1

* 692 FF***** 85** - 125* 0.0 S*** irq/21-snd_ice1

* 646 FF***** 83** - 123* 0.0 S*** irq/18-snd_hdsp

1172 FF***** 82** - 122* 0.8 S*** irq/18-nvidia

** 79 FF***** 80** - 120* 0.0 S*** irq/19-ehci_hcd

** 81 FF***** 80** - 120* 0.3 S*** irq/16-ohci_hcd

** 83 FF***** 79** - 119* 0.0 S*** irq/17-ohci_hcd

** 85 FF***** 78** - 118* 0.0 S*** irq/18-ohci_hcd

** 87 FF***** 78** - 118* 0.0 S*** irq/17-ohci_hcd

** 89 FF***** 77** - 117* 0.0 S*** irq/18-ohci_hcd

** 91 FF***** 75** - 115* 0.0 S*** irq/1-i8042

** 20 FF***** 50** -* 90* 0.0 S*** irq/9-acpi

** 68 FF***** 50** -* 90* 0.0 S*** irq/22-ahci

* 246 FF***** 50** -* 90* 0.0 S*** irq/14-pata_ati

* 250 FF***** 50** -* 90* 0.0 S*** irq/15-pata_ati

* 289 FF***** 50** -* 90* 0.0 S*** irq/22-firewire

* 537 FF***** 50** -* 90* 0.0 S*** irq/7-parport0

1014 FF***** 50** -* 90* 0.0 S*** irq/43-eth0

*** 3 TS****** -** 0* 19* 0.2 S*** ksoftirqd/0

*** 9 TS****** -** 0* 19* 0.2 S*** ksoftirqd/1



spinymouse@precise:~$ sudo gedit /etc/default/rtirq



spinymouse@precise:~$ sudo /etc/init.d/rtirq stop



spinymouse@precise:~$ sudo /etc/init.d/rtirq start

Setting IRQ priorities: start [rtc] irq=8 pid=92 prio=90: OK.

Setting IRQ priorities: start [hdspm] irq=18 pid=85 prio=85: OK.

Setting IRQ priorities: start [hdspm] irq=18 pid=89 prio=84: OK.

Setting IRQ priorities: start [hdspm] irq=18 pid=646 prio=83: OK.

Setting IRQ priorities: start [hdspm] irq=18 pid=1172 prio=82: OK.

Setting IRQ priorities: start [ICE1712] irq=21 pid=692 prio=80: OK.

Setting IRQ priorities: start [ICE1712] irq=20 pid=650 prio=80: OK.

Setting IRQ priorities: start [ohci_hcd] irq=16 pid=81 prio=75: OK.

Setting IRQ priorities: start [ohci_hcd] irq=17 pid=83 prio=74: OK.

Setting IRQ priorities: start [ohci_hcd] irq=17 pid=87 prio=73: OK.

Setting IRQ priorities: start [ehci_hcd] irq=19 pid=79 prio=75: OK.

Setting IRQ priorities: start [i8042] irq=1 pid=91 prio=70: OK.



spinymouse@precise:~$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

** 92 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

** 85 FF***** 85** - 125* 0.0 S*** irq/18-ohci_hcd

** 89 FF***** 84** - 124* 0.0 S*** irq/18-ohci_hcd

* 646 FF***** 83** - 123* 0.0 S*** irq/18-snd_hdsp

1172 FF***** 82** - 122* 0.8 S*** irq/18-nvidia

* 650 FF***** 80** - 120* 0.0 S*** irq/20-snd_ice1

* 692 FF***** 80** - 120* 0.0 S*** irq/21-snd_ice1

** 79 FF***** 75** - 115* 0.0 S*** irq/19-ehci_hcd

** 81 FF***** 75** - 115* 0.3 S*** irq/16-ohci_hcd

** 83 FF***** 74** - 114* 0.0 S*** irq/17-ohci_hcd

** 87 FF***** 73** - 113* 0.0 S*** irq/17-ohci_hcd

** 91 FF***** 70** - 110* 0.0 S*** irq/1-i8042

** 20 FF***** 50** -* 90* 0.0 S*** irq/9-acpi

** 68 FF***** 50** -* 90* 0.0 S*** irq/22-ahci

* 246 FF***** 50** -* 90* 0.0 S*** irq/14-pata_ati

* 250 FF***** 50** -* 90* 0.0 S*** irq/15-pata_ati

* 289 FF***** 50** -* 90* 0.0 S*** irq/22-firewire

* 537 FF***** 50** -* 90* 0.0 S*** irq/7-parport0

1014 FF***** 50** -* 90* 0.0 S*** irq/43-eth0

*** 3 TS****** -** 0* 19* 0.2 S*** ksoftirqd/0

*** 9 TS****** -** 0* 19* 0.2 S*** ksoftirqd/1



spinymouse@precise:~$ sudo shutdown -r now



spinymouse@precise:~$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

** 92 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

** 85 FF***** 85** - 125* 0.0 S*** irq/18-ohci_hcd

** 89 FF***** 84** - 124* 0.0 S*** irq/18-ohci_hcd

* 666 FF***** 83** - 123* 0.0 S*** irq/18-snd_hdsp

1175 FF***** 82** - 122* 0.8 S*** irq/18-nvidia

* 681 FF***** 80** - 120* 0.0 S*** irq/20-snd_ice1

* 688 FF***** 80** - 120* 0.0 S*** irq/21-snd_ice1

** 79 FF***** 75** - 115* 0.0 S*** irq/19-ehci_hcd

** 81 FF***** 75** - 115* 0.1 S*** irq/16-ohci_hcd

** 83 FF***** 74** - 114* 0.0 S*** irq/17-ohci_hcd

** 87 FF***** 73** - 113* 0.0 S*** irq/17-ohci_hcd

** 91 FF***** 70** - 110* 0.0 S*** irq/1-i8042

** 20 FF***** 50** -* 90* 0.0 S*** irq/9-acpi

** 68 FF***** 50** -* 90* 0.6 S*** irq/22-ahci

* 252 FF***** 50** -* 90* 0.0 S*** irq/14-pata_ati

* 253 FF***** 50** -* 90* 0.0 S*** irq/15-pata_ati

* 289 FF***** 50** -* 90* 0.0 S*** irq/22-firewire

* 545 FF***** 50** -* 90* 0.0 S*** irq/7-parport0

1023 FF***** 50** -* 90* 0.0 S*** irq/43-eth0

*** 3 TS****** -** 0* 19* 0.2 R*** ksoftirqd/0

*** 9 TS****** -** 0* 19* 0.2 S*** ksoftirqd/1



spinymouse@precise:~$ diff /etc/default/rtirq /media/avlinux/etc/default/rtirq

spinymouse@precise:~$



################################################## ######################



spinymouse@avlinux:~$ cat /proc/interrupts

********** CPU0****** CPU1******

* 0:******* 119********* 1** IO-APIC-edge***** timer

* 1:********* 0******* 151** IO-APIC-edge***** i8042

* 4:********* 0********* 2** IO-APIC-edge***

* 7:********* 1********* 0** IO-APIC-edge***** parport0

* 8:********* 0********* 1** IO-APIC-edge***** rtc0

* 9:********* 0********* 0** IO-APIC-fasteoi** acpi

14:********* 0********* 0** IO-APIC-edge***** pata_atiixp

15:********* 0********* 0** IO-APIC-edge***** pata_atiixp

16:********* 9****** 9999** IO-APIC-fasteoi** ohci_hcd:usb2

17:********* 0********* 2** IO-APIC-fasteoi** ohci_hcd:usb3, ohci_hcd:usb5

18:********* 0********* 2** IO-APIC-fasteoi** ohci_hcd:usb4, ohci_hcd:usb6, hdspm

19:********* 2****** 3236** IO-APIC-fasteoi** ehci_hcd:usb1

20:********* 0********* 0** IO-APIC-fasteoi** ICE1712

21:********* 0********* 0** IO-APIC-fasteoi** ICE1712

22:******** 19***** 13587** IO-APIC-fasteoi** ahci, firewire_ohci

43:********* 0******* 122** PCI-MSI-edge***** eth0

NMI:********* 0********* 0** Non-maskable interrupts

LOC:**** 109959**** 109875** Local timer interrupts

SPU:********* 0********* 0** Spurious interrupts

PMI:********* 0********* 0** Performance monitoring interrupts

IWI:********* 0********* 0** IRQ work interrupts

RES:***** 61574***** 40384** Rescheduling interrupts

CAL:******* 156******** 28** Function call interrupts

TLB:******* 780******* 562** TLB shootdowns

TRM:********* 0********* 0** Thermal event interrupts

THR:********* 0********* 0** Threshold APIC interrupts

MCE:********* 0********* 0** Machine check exceptions

MCP:******** 31******** 31** Machine check polls

ERR:********* 0

MIS:********* 0

spinymouse@avlinux:~$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

* 384 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

1102 FF***** 85** - 125* 0.0 S*** irq/18-hdspm

1123 FF***** 80** - 120* 0.0 S*** irq/20-ICE1712

1135 FF***** 80** - 120* 0.0 S*** irq/21-ICE1712

* 591 FF***** 75** - 115* 0.0 S*** irq/19-ehci_hcd

* 602 FF***** 75** - 115* 0.2 S*** irq/16-ohci_hcd

* 605 FF***** 74** - 114* 0.0 S*** irq/17-ohci_hcd

* 607 FF***** 73** - 113* 0.0 S*** irq/17-ohci_hcd

* 377 FF***** 70** - 110* 0.0 S*** irq/1-i8042

** 97 FF***** 50** -* 90* 0.0 S*** irq/9-acpi

* 586 FF***** 50** -* 90* 0.0 S*** irq/14-pata_ati

* 587 FF***** 50** -* 90* 0.0 S*** irq/15-pata_ati

* 592 FF***** 50** -* 90* 0.1 S*** irq/22-ahci

* 604 FF***** 50** -* 90* 0.0 S*** irq/22-firewire

* 606 FF***** 50** -* 90* 0.0 S*** irq/18-ohci_hcd

* 608 FF***** 50** -* 90* 0.0 S*** irq/18-ohci_hcd

1030 FF***** 50** -* 90* 0.0 S*** irq/7-parport0

1496 FF***** 50** -* 90* 0.0 S*** irq/43-eth0

*** 3 FF****** 1** -* 41* 0.1 S*** ksoftirqd/0

** 11 FF****** 1** -* 41* 0.1 S*** ksoftirqd/1



spinymouse@avlinux:~$ uname -a

Linux avlinux 3.0.23-rt40 #1 SMP PREEMPT RT Wed Apr 11 19:20:41 CEST 2012 i686 GNU/Linux



################################################## ######################



spinymouse@precise:~$ uname -a

Linux precise 3.2.0-23-lowlatency #31-Ubuntu SMP PREEMPT Wed Apr 11 02:24:03 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux



spinymouse@precise:~$ diff /etc/X11/xorg.conf /media/avlinux/etc/X11/xorg.conf

47c47

< Driver "nvidia"

---

> Driver "nv"

68,70c68,70

< Section "Extensions"

< Option***** "Composite" "enable"

< EndSection

---

> #Section "Extensions"

> # Option***** "Composite" "enable"

> #EndSection


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Old 04-29-2012, 07:59 PM
Ralf Mardorf
 
Default Issue with the priority of the sound cards using rtirq
The config of the Ubuntu Studio Precise kernel 3.2.0-23-lowlatency, seems to be ready to use it with threadirqs as boot option.

Anyway, I still get

$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

** 92 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

** 85 FF***** 85** - 125* 0.0 S*** irq/18-ohci_hcd

** 89 FF***** 84** - 124* 0.0 S*** irq/18-ohci_hcd

* 611 FF***** 83** - 123* 0.0 S*** irq/18-snd_hdsp

1285 FF***** 82** - 122* 0.8 S*** irq/18-nvidia

* 652 FF***** 80** - 120* 0.0 S*** irq/20-snd_ice1

* 656 FF***** 80** - 120* 0.0 S*** irq/21-snd_ice1



instead the of the wanted



$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

* 384 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

1102 FF***** 85** - 125* 0.0 S*** irq/18-hdspm

1123 FF***** 80** - 120* 0.0 S*** irq/20-ICE1712

1135 FF***** 80** - 120* 0.0 S*** irq/21-ICE1712



So for the moment I guess it's better instead of using

$ grep RTIRQ_NAME_LIST /etc/default/rtirq

RTIRQ_NAME_LIST="rtc hdspm snd usb i8042"

which does the trick for other installs, to use

$ grep RTIRQ_NAME_LIST /etc/default/rtirq

RTIRQ_NAME_LIST="rtc snd usb i8042"

since this results in

$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

** 92 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

* 702 FF***** 85** - 125* 0.0 S*** irq/20-snd_ice1

* 724 FF***** 85** - 125* 0.0 S*** irq/21-snd_ice1

* 717 FF***** 83** - 123* 0.0 S*** irq/18-snd_hdsp

1348 FF***** 82** - 122* 0.8 S*** irq/18-nvidia

** 78 FF***** 80** - 120* 0.0 S*** irq/19-ehci_hcd

** 80 FF***** 80** - 120* 0.3 S*** irq/16-ohci_hcd

** 82 FF***** 79** - 119* 0.0 S*** irq/17-ohci_hcd

** 84 FF***** 78** - 118* 0.0 S*** irq/18-ohci_hcd

** 87 FF***** 78** - 118* 0.0 S*** irq/17-ohci_hcd

** 89 FF***** 77** - 117* 0.0 S*** irq/18-ohci_hcd

** 91 FF***** 75** - 115* 0.0 S*** irq/1-i8042

** 20 FF***** 50** -* 90* 0.0 S*** irq/9-acpi

** 67 FF***** 50** -* 90* 0.2 S*** irq/22-ahci

* 279 FF***** 50** -* 90* 0.0 S*** irq/14-pata_ati

* 280 FF***** 50** -* 90* 0.0 S*** irq/15-pata_ati

* 292 FF***** 50** -* 90* 0.0 S*** irq/22-firewire

* 561 FF***** 50** -* 90* 0.0 S*** irq/7-parport0

1020 FF***** 50** -* 90* 0.0 S*** irq/43-eth0

*** 3 TS****** -** 0* 19* 0.2 S*** ksoftirqd/0

*** 9 TS****** -** 0* 19* 0.2 S*** ksoftirqd/1

so my MIDI interfaces snd_ice1... get a higher priority than the audio card snd_hdsp..., but at least all the other stuff get a lower priority.



On other installs I also got/get the wanted priority for a non-rt, with threadirqs, e.g.:

spinymouse@avlinux:~$ uname -a

Linux avlinux 3.0.23-avl-7-pae #28 SMP PREEMPT Thu Mar 1 19:14:14 EST 2012 i686 GNU/Linux

spinymouse@avlinux:~$ /etc/init.d/rtirq status



* PID CLS RTPRIO* NI PRI %CPU STAT COMMAND

* 452 FF***** 90** - 130* 0.0 S*** irq/8-rtc0

1028 FF***** 85** - 125* 0.0 S*** irq/18-hdspm

1040 FF***** 80** - 120* 0.0 S*** irq/20-ICE1712

1042 FF***** 80** - 120* 0.0 S*** irq/21-ICE1712

* 615 FF***** 75** - 115* 0.0 S*** irq/19-ehci_hcd

* 620 FF***** 75** - 115* 0.2 S*** irq/16-ohci_hcd

* 622 FF***** 74** - 114* 0.0 S*** irq/17-ohci_hcd

* 626 FF***** 73** - 113* 0.0 S*** irq/17-ohci_hcd

* 445 FF***** 70** - 110* 0.0 S*** irq/1-i8042

** 96 FF***** 50** -* 90* 0.0 S*** irq/9-acpi

* 621 FF***** 50** -* 90* 0.1 S*** irq/22-firewire

* 625 FF***** 50** -* 90* 0.0 S*** irq/18-ohci_hcd

* 627 FF***** 50** -* 90* 0.0 S*** irq/18-ohci_hcd

* 628 FF***** 50** -* 90* 0.0 S*** irq/14-pata_ati

* 629 FF***** 50** -* 90* 0.0 S*** irq/15-pata_ati

* 634 FF***** 50** -* 90* 0.3 S*** irq/22-ahci

* 909 FF***** 50** -* 90* 0.0 S*** irq/7-parport0

1414 FF***** 50** -* 90* 0.0 S*** irq/43-eth0

*** 3 TS****** -** 0* 19* 0.0 S*** ksoftirqd/0

*** 9 TS****** -** 0* 19* 0.0 S*** ksoftirqd/1



Could it be the kernel version or video driver?



Any hints are welcome,

Ralf



PS: I did not test if it really does matter if the audio card has a higher or lower priority than the MIDI cards.


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Old 05-01-2012, 02:53 PM
Ralf Mardorf
 
Default Issue with the priority of the sound cards using rtirq
Hi

since I've got a strange issue with rtirq on US Precise only. Is there
anybody having a strange output for
/etc/init.d/rtirq status
too? I remember that there was a post, when US Precise wasn't released.

Regards,
Ralf

PS:
You might take a look at
http://lists.linuxaudio.org/pipermail/linux-audio-user/2012-May/date.html
http://lists.linuxaudio.org/pipermail/linux-audio-user/2012-April/date.html

Message: 17
Date: Tue, 01 May 2012 13:17:39 +0200
From: Jeremy Jongepier <jeremy@autostatic.com>
Subject: Re: [LAU] Issue with the priority of the sound cards using
rtirq
To: linux-audio-user@lists.linuxaudio.org
Message-ID: <4F9FC653.9040102@autostatic.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 05/01/12 12:09, Ralf Mardorf wrote:
> Jeremy, the bad is, that I don't have another PCIe x1 slot.
>

Ah bummer

>> > In my experience, restarting the script tries to raise the
priorities
>> > of the threads in RTIRQ_NAME_LIST, but the ones which are already
>> > raised aren't lowered even if you leave them out of the list.
>> >
>> > Try rebooting the computer.
>> >
>> > Cheers, Pablo
> *reboot*
>
> The reboot doesn't improve anything.

So the output of /etc/init.d/rtirq status is the same as in the other
mail? That's really weird. The only thing I can think of is that
something else (another script?) is prioritizing stuff too (like the
nvidia and ohci_hcd processes). The steps between the priorities
strengthens my suspicion, it should be 5 but some processes do not get
a
prio that can be divided by 5 (like nvidia which has prio 82). No one
on
the Ubuntu Studio list encountered the same issue? Maybe Ubuntu (or
Ubuntu Studio) prioritizes processes somewhere else.

Best,

Jeremy


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Old 05-01-2012, 03:02 PM
Ralf Mardorf
 
Default Issue with the priority of the sound cards using rtirq
PS:
https://lists.ubuntu.com/archives/ubuntu-studio-devel/2011-November/003631.html


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Old 05-03-2012, 11:52 PM
Ralf Mardorf
 
Default Issue with the priority of the sound cards using rtirq
http://lists.linuxaudio.org/pipermail/linux-audio-user/2012-May/084758.html

Dunno if this will solve the issue for my US Precise install, I'll test
it ASAP. Anyway, there at least is an explanation for the issue.


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