On 12/12/2020 21:03, Jim Jackson wrote:
> On 2020-12-12, alister  wrote:
>> On Sat, 28 Nov 2020 11:33:09 +0000, Mike Scott wrote:
>>
>>> Hi all; a quick query about speeds.
>>>
>>> I currently use an old i386 machine as home server (everything from
>>> local NFS file-store, to bind, to email server). It's an acer aspire
>>> r3700, running at 1.8GHz, 2 proc/4 thread job. It runs freebsd headless,
>>> and I use vnc for day-to-day operations on it.
>>>
>>> I'm contemplating replacing with a rpi4, which I gather is now supported
>>> by freebsd, using a usb3 external hard drive. But is this likely to
>>> prove slower or problematic for any other reason?
>>>
>>> TIA for any thoughts.
>>
>> Late to the party but my thoughts would be
>>
>> Network on I386 is probably 100mb/s at best so will be the main bottle
>> neck in your current set-up (actually network speeds are nearly always
>> the bottle neck on a network server.)
>> the pi has a 1000gb interface,
>                 ^^^^^^ I wish !!! That should be 1Gb
>
>> IIRC it still cannot achieve full
>> performance but it can achieve considerably more than  100mb/s.
>
> You are out of date - Pi4 can do full gigabit and fill the pipe. Unlike
> previous Pi's it has native ethernet and seperate USB3 and 2.
> This is old news now.
>

Quite, earlier in the thread I post that I was getting 110 MB/s from a
network disk on a rpi4 4GB, 860 Samsung EVO, using Samba. That is near
as damn it full Gigabit.

I just checked using CrystalDiskMark:

-----------------------------------------------------------------------
CrystalDiskMark 6.0.2 x64 (C) 2007-2018 hiyohiyo
                           Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

    Sequential Read (Q= 32,T= 1) :   118.248 MB/s
   Sequential Write (Q= 32,T= 1) :   114.832 MB/s
   Random Read 4KiB (Q=  8,T= 8) :    51.672 MB/s [  12615.2 IOPS]
  Random Write 4KiB (Q=  8,T= 8) :    33.194 MB/s [   8104.0 IOPS]
   Random Read 4KiB (Q= 32,T= 1) :    46.954 MB/s [  11463.4 IOPS]
  Random Write 4KiB (Q= 32,T= 1) :    34.565 MB/s [   8438.7 IOPS]
   Random Read 4KiB (Q=  1,T= 1) :     6.425 MB/s [   1568.6 IOPS]
  Random Write 4KiB (Q=  1,T= 1) :     6.543 MB/s [   1597.4 IOPS]

   Test : 1024 MiB [Y: 7.5% (34.4/457.4 GiB)] (x5)  [Interval=5 sec]
   Date : 2020/12/13 10:20:14
     OS : Windows 10 Professional [10.0 Build 19041] (x64)


>> therfore performance will be better than your current set-up even if it
>> is not as good as a dedicated NAS
>>
>> in a domestic environment how critical is this anyway?
>>
>> as always it boils down to fast, reliable, cheap - choose any 2.
>
> or 3 if using a pi4 :-)
>

Initially I had problems with my USB/PSU, but I replaced it with a
mobile phone one and the rpi4 is now rock solid, all 3 as you say.

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