Re: Very slow scp performance comparing to Linux

On Sat, Sep 2, 2023, 22:12 Wojciech Puchar  wrote:

> linux filesystem caching is just stupid, optimized to show up good in
> benchmarks.
>
> It just accepts writes as long as there is available memory, without
> writing anything to disk, then if it cannot do it anymore or some time
> passed, schedules huge amount of writes, often stalling whole system.
>
> This is how it was almost 20 years ago when i was still using linux, seems
> like didn't change much.
>
> Just think how much data loss and inconsistency would occur if there will
> be crash or power loss after "writing" 100000 files of 10GB which can
> easily be done in short time as linux just doesn't block writing process
> at all and fill memory.
>
> Since i started using FreeBSD UFS, many machines, lighter of heavier
> workload, always mixed workload, i never ever have more that a few files
> loss on power outage.
>

Exactly! I was recently surprised when my friend using Linux copied around
4GB file to my pendrive, it showed over 200MB/s and was rapid fast but then
we had to wait for background operation to complete for over an hour with
absolutely no information on progress/completion. This is why I prefer
FreeBSD :-)

--
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info

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