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lmz commented on SSD-IQ: Uncovering the Hidden Side of SSD Performance [pdf]   vldb.org/pvldb/vol18/p429... · Posted by u/jandrewrogers
kvemkon · 10 hours ago
> Vendors downplay the idiosyncrasies of specific SSD models by marketing their devices using four “headline” throughput metrics: sequential read, sequential write, random read, and random write.

For SOHO yes, where no serious database usage is expected. But server/datacenter SSDs are categorized: read-intensive, write-intensive and mixed-usage.

lmz · 7 hours ago
Those categories are usually derived from another advertised number: Drive Writes Per Day.

As an example in this Micron product brief the Latency for the read-intensive vs mixed use product are the same: https://assets.micron.com/adobe/assets/urn:aaid:aem:e71d9e5e...

Of course the footnote says that latency is a median at QD=1 random 4K IO.

From the paper the PM9A3 which is 1 DWPD has better P99.9 write latency under load vs the 7450 Pro (3 DWPD mixed use).

lmz commented on Acronis True Image costs performance when not used   randomascii.wordpress.com... · Posted by u/juanviera23
ninkendo · a day ago
> I'm curious whether people who daily drive mac or linux encounter these sorts of system configuration gremlins.

IMO these issues occur any time you have third party software that does the job the operating system should be doing itself. Backup/snapshot software (this should be a feature of the file system), clipboard software (the OS clipboard should cover these needs), hot key software, window management, “anti cheat” (or really anything that needs to be a kernel module), antivirus, antimalware, the list goes on.

A properly architected system should have an operating system in charge of managing apps and resources and hardware, and apps which mind their own business. Cross-cutting “horizontal” stuff like what Acronis is doing here are reimplementing things your OS should be doing, and thus aren’t tested along with the OS itself, and are bound to have issues like these.

Or you run macOS and the first party stuff is so buggy (spotlight I’m looking at you) that you’re screwed either way.

lmz · 19 hours ago
Lock the system -> get sued (or at least abused) for locking out third party utility writers. Leave the system open for extension -> poorly written apps by others ruin your reputation. Add telemetry to detect what third parties are doing -> privacy complaints.

There's no winning here.

lmz commented on How Not to Buy a SSD   andrei.xyz/post/how-not-t... · Posted by u/speckx
morninglight · 2 days ago
ValiDrive was designed to be fast and nondestructive -

In a random, non-repeating sequence, at each of 576 separate evenly spread locations on any drive, ValiDrive reads the current contents of that region. It then fills that region with random “data noise” then reads back the region's contents to verify that the “data noise” was actually stored. ValiDrive then always rewrites the region's original data to restore whatever data may have been originally stored there.

For in-depth analysis, Gibson's "SpinRite" can be used -

The two programs are complimentary but very different. ValiDrive quickly checks for the presence of any storage at 576 locations across a drive's storage media. SpinRite thoroughly, deeply and fully examines, verifies, and exercises any drive's storage media, while also performing comprehensive data recovery if necessary.

So, ValiDrive is a “quickie” test to see whether any storage is present, whereas SpinRite is the heavy hitter that verifies every byte of a drive's storage to verify its integrity and reliability.

SpinRite is a data professional's tool at a hobbyist price - inexpensive, but not free.

https://www.grc.com/sr/spinrite.htm

Validrive is less than 100K bytes! You could download and test it in 10 minutes. That should answer any questions you may have.

lmz · 2 days ago
How is a "write random data and undo it later" test considered "nondestructive"? Unless it has fs knowledge and only does it to unallocated sectors.
lmz commented on Should the web platform adopt XSLT 3.0?   github.com/whatwg/html/is... · Posted by u/protomolecool
em-bee · 2 days ago
that's the thing, XML should have become javascript native so that we could write inline HTML more easily like JSX from react allows us to do.
lmz · 2 days ago
It did somewhat. It was called E4X.
lmz commented on "Remove mentions of XSLT from the html spec"   github.com/whatwg/html/pu... · Posted by u/troupo
kuschku · 5 days ago
I'd love to see more powerful HTML templating that'd be able to handle arbitrary XML or JSON inputs, but until we get that, we'll have to make do with XSLT.

For now, there's no alternative that allows serving an XML file with the raw data from e.g. an embedded microcontroller in a way that renders a full website in the browser if desired.

Even more so if you want to support people downloading the data and viewing it from a local file.

lmz · 5 days ago
If you're OK with the startup cost of 2-3 more files for the viewer bootstrap, you could just fetch the XML data from the microcontroller using JS. I assume the xsl stylesheet is already a separate file.
lmz commented on Hyundai wants loniq 5 customers to pay for cybersecurity patch in baffling move   neowin.net/news/hyundai-w... · Posted by u/duxup
mrangle · 8 days ago
It seems like you don't like Hyundai. What's childish is your resort to ad hominem because you disagree.

It's not free labor anymore than the car was free. It's a fix of product that was defective off of the line. The necessity of the fix being evidence of the defect.

Car buyers are not automotive cybersecurity engineers, and they can never be expected to be. Caveat Emptor is a hilarious remark for this situation.

lmz · 8 days ago
Is it a defect if it required the development of an adversarial tool / exploit which previously did not exist? If the roof leaked when it's raining it's a defect because rain existed before. But this exploit didn't exist before.
lmz commented on Making Your Own Merchant Service Provider   voidfox.com/blog/payment_... · Posted by u/progval
maccard · 8 days ago
We have “faster payments” in EU/UK. You enter a bank account number and sort code, confirm it, and it transfers instantly in 99% of situations. 0 fees, it’s faster than card payments and available to anyone with a bank account. If you want to go down the clearing route you can do CHAPS which is the same as a US wire.
lmz · 8 days ago
Funnily enough, the company that runs UK Faster Payments (Vocalink) is a Mastercard subsidiary.
lmz commented on GDPR meant nothing: chat control ends privacy for the EU [video]   youtube.com/watch?v=3NyUg... · Posted by u/givemeethekeys
VladVladikoff · 8 days ago
Is it possible to make an encrypted messenger app without a central authority? Like BitTorrent magnet links. We all share the messages to support the network bandwidth, but can only see the messages which pertain to us? From my really novice understanding of cryptography, this should be possible. And it seems like the only privacy focused solution for the future.

Edit: looks like it exists, and is called Briar.

lmz · 8 days ago
Isn't that sort of like how Tor works?
lmz commented on Making Your Own Merchant Service Provider   voidfox.com/blog/payment_... · Posted by u/progval
toast0 · 8 days ago
US banking has wire transfers, but they cost $15-$40 and can only be reversed with the cooperation of the receiving bank. We use them to transfer large sums of money and for transfers that need to be settled immediately; most often for house purchases where both apply.

We do have ACH (single nightly batch), same day ACH (four? batches throughout the day), and the new FedNow (immediate). But all of those involve providing account numbers and we don't like to provide those (both payers and receivers prefer not to give the other participant their ach numbers). Also, there's not a consistent way to link a payment/debit with an invoice, because memo fields don't necessarily show up with the payment.

Also, credit card purchases can be reversed without the cooperation of the merchant. Most issuers are generous with chargebacks (at least historically). You could take a merchant to court if you did a wire transfer, but that's expensive and time consuming.

lmz · 8 days ago
Account-number only pulls (eg ACH Debits) are insane. Where I'm from people, charities etc routinely publish their bank account numbers if they expect to receive money from strangers.
lmz commented on Nginx introduces native support for ACME protocol   blog.nginx.org/blog/nativ... · Posted by u/phickey
cpach · 11 days ago
With dns-01, multiple servers could, independently of each other, fetch a certificate for the same set of hostnames. Not sure if it’s a good idea though.
lmz · 10 days ago
Multiple keys and certs for the same hostname? Will the CA even issue that?

u/lmz

KarmaCake day1905November 4, 2009View Original