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Date:      Wed, 20 Jan 2021 13:58:01 +0000
From:      Santiago Martinez <sm@codenetworks.net>
To:        freebsd-current@freebsd.org
Subject:   Re: Waiting for bufdaemon
Message-ID:  <d55fc185-186b-742d-eaf6-1f2a13232817@codenetworks.net>
In-Reply-To: <YAg1jCpPQd2K/zfE@kib.kiev.ua>
References:  <YAO9/cxnbGv5u3Bg@kib.kiev.ua> <adb9d42c-d855-1edf-a57c-9b16aad481b7@gwdg.de> <YAQINMoEi7ysBSD5@kib.kiev.ua> <1d675d77-8bdb-c285-ffa2-28330b839734@alvermark.net> <YAgDhJ9/YX29kH2a@kib.kiev.ua> <60599f75-7206-9269-ac0c-934f8f31ae26@gwdg.de> <YAgjOYdVG%2BN4lU0n@kib.kiev.ua> <d25a7608-9e61-0ece-9500-d4a80e79068e@gwdg.de> <YAgsO3AoB5PFhzDq@kib.kiev.ua> <3885bc2a-3924-cc3f-6cad-99dc6f803b0d@gwdg.de> <YAg1jCpPQd2K/zfE@kib.kiev.ua>

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From: Santiago Martinez <sm@codenetworks.net>
To: freebsd-current@freebsd.org
Message-ID: <d55fc185-186b-742d-eaf6-1f2a13232817@codenetworks.net>
Subject: Re: Waiting for bufdaemon
References: <YAO9/cxnbGv5u3Bg@kib.kiev.ua>
 <adb9d42c-d855-1edf-a57c-9b16aad481b7@gwdg.de> <YAQINMoEi7ysBSD5@kib.kiev.ua>
 <1d675d77-8bdb-c285-ffa2-28330b839734@alvermark.net>
 <YAgDhJ9/YX29kH2a@kib.kiev.ua> <60599f75-7206-9269-ac0c-934f8f31ae26@gwdg.de>
 <YAgjOYdVG+N4lU0n@kib.kiev.ua> <d25a7608-9e61-0ece-9500-d4a80e79068e@gwdg.de>
 <YAgsO3AoB5PFhzDq@kib.kiev.ua> <3885bc2a-3924-cc3f-6cad-99dc6f803b0d@gwdg.de>
 <YAg1jCpPQd2K/zfE@kib.kiev.ua>
In-Reply-To: <YAg1jCpPQd2K/zfE@kib.kiev.ua>

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Hi Everyone, i have exactly the same behavior as Rainer described.

"After a high system load, several programs only react very slowly (e.g.
Firefox)......"

I will try with the patch and see if it also clear this on my machine
(AMD R7).

Santiago


On 1/20/21 1:52 PM, Konstantin Belousov wrote:
> On Wed, Jan 20, 2021 at 02:35:59PM +0100, Rainer Hurling wrote:
>> Am 20.01.21 um 14:12 schrieb Konstantin Belousov:
>>> On Wed, Jan 20, 2021 at 01:56:57PM +0100, Rainer Hurling wrote:
>>>> Am 20.01.21 um 13:34 schrieb Konstantin Belousov:
>>>>> On Wed, Jan 20, 2021 at 01:17:51PM +0100, Rainer Hurling wrote:
>>>>>> Am 20.01.21 um 11:18 schrieb Konstantin Belousov:
>>>>>>> On Wed, Jan 20, 2021 at 11:02:21AM +0100, Jakob Alvermark wrote:
>>>>>>>> This patch hides the problem for me. The system seems to work be=
tter now.
>>>>>>>>
>>>>>>>> No waiting on reboot, and the webcam works better.
>>>>>>> I am curious what do you mean by the above reference to webcam.
>>>>>>> Can you explain it with more details, even if only the impression=
s?
>>>>>> I should mention, that beside the already discussed timing problem=
 with
>>>>>> bufdaemon, I also have problems with several apps:
>>>>>>
>>>>>>
>>>>>> After a high system load, several programs only react very slowly =
(e.g.
>>>>>> Firefox). Several dockable apps from WindowMaker, but also e.g. co=
nky do
>>>>>> not update their windows anymore, they freeze. After some time, Fi=
refox
>>>>>> updates its screen content only after switching back from another =
window ...
>>>>>>
>>>>>> When such frozen programs are killed and restarted, they run norma=
lly
>>>>>> again for an indefinite time before they freeze again.
>>>>>>
>>>>>> These symptoms completely disappeared, after I patched the Ryzen b=
ox as
>>>>>> suggested on 01/17:
>>>>> Do you load latest microcode update from devcpu-data?
>>>> Yes, sysutils/devcpu-data is installed and the following to lines ar=
e in
>>>> /boot/loader.conf
>>>>
>>>> cpu_microcode_load=3D"YES"
>>>> cpu_microcode_name=3D"/boot/firmware/intel-ucode.bin"
>>>>
>>>> But isn't this just for Intel (i387 and amd64), not AMD cpus?
>>> You need microcode_update_enable=3D"YES" in /etc/rc.conf for late mic=
rocode
>>> update.
>>>
>>> I think that early boot update should work on AMD, bit for this you n=
eed to
>>> select and put right blob.  It is enough to load late to answer my qu=
estion.
>> Ah, ok. Thanks for clarification. I also put cpu_microcode_load=3D"YES=
" in
>> /etc/rc.conf for a late update.
>>
>> Should I try again without your patch of sys/x86/tsc.c, whether the
>> problem still occurs?
> Yes.
>
>>
>> And for the early boot update, how do I know about the right blob?
> I am not aware of the mechanism.  My best suggestion is that you match
> the blob against your CPU family/model id manually.
>
>>>>> It might be not enough, which means that additionally latest BIOS n=
eeds
>>>>> to be flushed.
>>>>>
>>>> I am running latest Firmware F31 on a "Gigabyte\ Aorus\ X570\ Elite"=

>>>> mainboard.
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> freebsd-current@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-current
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