> On Mar 7, 2022, at 12:10 PM, Brian Brombacher <br...@planetunix.net> wrote:
>
> Hi Mihai,
>
> Not exactly related to disk speed, but have you cranked up the following
> sysctl to see if it helps?
>
> sysctl kern.bufcachepercentage=9
>
> I put an entry in /etc/sysctl.conf for persistence.
>
> This will cause up to 90% of system memory to be used as a unified buffer
> cache for disk access. Not sure if that helps but I use that value on every
> install, including desktop and servers. I can’t remember if the default
> value has changed in the past 10 years but I always go with 90%.
I was helped off-list with this information, there is a memory threshold on
amd64 that affects the behavior of the sysctl. If you have more than 4 gb of
memory, the sysctl isn’t important.
>
> -Brian
>
>>> On Mar 7, 2022, at 6:17 AM, Mihai Popescu <mih...@gmail.com> wrote:
>>>
>>> On Mon, Mar 7, 2022 at 8:46 AM Janne Johansson <icepic...@gmail.com> wrote:
>>>
>>> Den sön 6 mars 2022 kl 16:41 skrev Mihai Popescu <mih...@gmail.com>:
>>>>
>>>> Since this thread is moving slowly in another direction, let me
>>>
>>> True
>>>
>>>> reiterate my situation again: I am running a browser (mostly chromium)
>>>> and the computer slows down on downloads. Since I've checked the
>>>> downloads rates, I observed they are slow than my maximum 500Mbps for
>>>> the line.
>>>> I can reach 320Mbps maximum, but mostly it stays at 280Mbps and the
>>>> Chromium has 30 seconds delays in everything i do.
>>>
>>> I would make sure it is not some kind of DNS thing, 30 second delays
>>> sounds A LOT
>>> like trying a "dead" resolver 3 times with 10 secs in between, before
>>> moving to a "working" one.
>>
>> By "delay" I mean the time passed from clicking on some Chromium menu
>> and the actual display of that menu. Even using a tty is slow, login
>> ..... password .... in that disk intense usage period.
>> Tried Debian and FreeBSD, all are able to write disk and do graphics.
>> That ZFS on FreeBSD is mind blowing, I hope it's reliable too.
>>
>> All I wanted was to compare my hardware and disk speeds with someone
>> running OpenBSD: simple dmesg <-> speed report match, but I think I
>> hit a taboo again.
>> Found some discussions on misc@ about that, no clear answer. I think I
>> will close this thread and see what this ZFS is about :-) .
>>
>> Thank you all.
>>>
>>> --
>>> May the most significant bit of your life be positive.
>>
>
