Interesting
I’m using an iMac and have only noticed that the speed is not linked with the
memory they have, nor the WD drives I use, nor the processor. It must be the
USB that chokes (albeit occasionally) the whole process.
Amities
Philippe
> Le 6 déc. 2019 à 20:22, Ken Norton <ken@xxxxxxxxxxx> a écrit :
>
> I've been finding ways to greatly improve the speed of my LR
> environment. Over the past couple of months, I've discovered several
> significant things that have completely revolutionized the experience:
>
> 1. SSD external work drive for my active/current catalog/images.
> 2. Retirement of the Seagate drive that uses SMR (Shingled Magnetic
> Recording).
> 3. Adjustment of the "Preview" settings.
> 4. Macbook Pro
>
> I just wanted to make mention of the external hard drive situation.
> The Seagate drives are quite fast as long as your read/writes are
> within the buffer. But a high volume throughput will bright the drive
> to its knees. For example, if you import 100 raw files, you'll see
> that the drive has to pause every few seconds to catch its breath
> before continuing. It starts out fast, but by the 10th file, it takes
> potty breaks that last for 5-10 seconds. It is especially bad if you
> are doing ANYTHING else with the drive at the same time. Seagate has
> been trying to refine this a bit more and the lag times are different
> from one model or batch to the next. When the Seagate drives are on
> their game, they are fantastic. They actually do very well for
> lower-interaction applications.
>
> Another observance on throughputs is with the WD (Western Digital)
> drives. Of my drives, the 2TB drives appear to be the quickest ones,
> with the 4T being about half as fast. It looks like this is a buffer
> issue, combined with the encryption process. I believe that the drive
> encryption process will halve performance of the drives, regardless of
> size. While the performance is a little lacking, I think the WD My
> Passport Ultra 2TB or 4TB is one of the very best external drives
> available with a good mix of performance and features.
>
> At Bestbuy, you can get the WD Easystore drives. These are an
> interesting mixed bag. I believe the actual HD itself is superior to
> the Passport series, but the feature set is lighter. The housing isn't
> as robust and it lacks the encryption engine. My testing shows that my
> 5TB Easystore is about 50% faster than the 4TB My Passport Ultra.
> These are real-world numbers for actual LR use, not theoretical.
>
> I recently acquired a 1TB Samsung T5 external SSD. This is now my
> primary Lightroom work drive. I have my 2018 and 2019 libraries and
> catalogs on it and I use it on whichever laptop I want to tote with me
> that day. Seamless use between the Macbook Pro and the Lenovos. Every
> few days I will copy everything back to my regular hard drives so I
> have no less than three copies now, with one being kept offsite. Real
> world speed? I see about a 100-200% improvement in usable speed.
> That's about all.
>
> Why?
>
> Because the drive is now so fast that I'm actually being held back to
> the computer itself. With a spinny hard drive, there was little actual
> performance difference between my computers, but with the SSD, I get
> much more variance across the computers as the processor and memory is
> getting tapped out.
>
> Which brings me to the subject of the Macbook Pro. My Lenovo laptops
> and the Apple are of the same general generation. While the Lenovos
> have Intel i5 chips, the Apple has i7. That right there will
> definitely yield greater performance. Yet, it's not across the boards.
> The i7 isn't magically faster in EVERYTHING. As the Processor and GPU
> are essentially one and the same in the Macbook Pro, if you something
> intense going on with the screen, the processor will have to back off
> on real work to accommodate it. The Lenovos keep this separate and I
> don't get the variability in processing performance like I do with the
> Macbook Pro.
>
> Related to this is processor slowdown due to thermal control. All
> three of my laptops will protect themselves and slow the processor
> down after a bit, but my oldest Lenovo is the best at maintaining
> maximum speed as the cooling fan will go crazy. The Macbook Pro's fan
> will also kick into high gear, but the processor will step down at the
> same time. The newer Lenovo has no cooling fan (or vents) of any form
> and will slowdown and stay silent. However, that Lenovo actually stays
> faster longer as it seems designed to run hot. It also allows
> Lightroom to use the GPU for additional processing.
>
> As to the external drives, these are all USB. None of my computers
> have the USB-C interface, so I'm port-speed limited. However, with the
> exception of the Samsung T5, what I've found is that the R/W buffers
> fill up after 20 seconds of use, so the drives are going to end up
> running near the limit anyway.
>
> As to the "Preview Settings", these "Retina" and equivalent displays
> have a higher pixel density than what our eyes are able to see. the
> standard settings will create a preview file based on the dpi of the
> computer's primary display. You can dumb those settings down and it
> will greatly improve performance with no apparent loss of detail as
> once you zoom in, it creates a 100% view regardless of what the
> preview settings are.
>
> One final note on external hard drives. One of my faults is maximizing
> my assets. If I buy an external hard drive, I'm going to use it until
> the magic smoke has escaped. However, it really is best to retire them
> out after a couple years of hard use. I discovered this with my
> Seagate as it performed well, until it didn't. I did everything to
> breathe new life into it, but it's time to retire it. Fortunately, for
> me, as I'm shooting around 25,000 pictures a year, it doesn't take
> long to exhaust a drive anyway, so the 2TB drives have all been taken
> out of primary use as my library is at 3TB now. The 2TB WD drive is
> still fine, and as it's my fastest spinny drive, I'll probably use it
> as a travel backup drive. On a trip, I can take it and the SSD and
> keep the 5TB at home.
>
> In another post, we can discuss which methods of
> partitioning/formatting the drives are best in a mixed PC/Mac
> environment.
>
> AG Schnozz
>
> AG Schnozz
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