Path: csiph.com!eternal-september.org!feeder3.eternal-september.org!i2pn.org!i2pn2.org!.POSTED!not-for-mail From: D Newsgroups: comp.os.linux.misc Subject: Re: News : ARM Trying to Buy AmperComputing Date: Wed, 22 Jan 2025 22:31:47 +0100 Organization: i2pn2 (i2pn.org) Message-ID: <774d956a-d5e6-f7a5-00ae-8cfa4ffbb366@example.net> References: <_hycnQxlN5kAphr6nZ2dnZfqn_SdnZ2d@earthlink.com> <35e42921-5781-8728-236f-afad1d3b56b1@example.net> <7258fd01-44f7-850d-3f69-54b93489f64d@example.net> <69ce04cf-80a7-7170-675f-4165ffedc92b@example.net> <4985abd5-ec8c-44da-0105-0778434959c0@example.net> <7b204573-ffba-79cc-e153-1dde4a00f2ad@example.net> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Injection-Info: i2pn2.org; logging-data="663296"; mail-complaints-to="usenet@i2pn2.org"; posting-account="w/4CleFT0XZ6XfSuRJzIySLIA6ECskkHxKUAYDZM66M"; In-Reply-To: X-Spam-Checker-Version: SpamAssassin 4.0.0 Xref: csiph.com comp.os.linux.misc:64666 On Wed, 22 Jan 2025, Rich wrote: > D wrote: >> >> >> On Wed, 22 Jan 2025, The Natural Philosopher wrote: >> >>> On 21/01/2025 19:56, Rich wrote: >>>> For SSD's, writes occur to an "erased" flash block (typically much >>>> larger than a "disk sector" size used by the host) and given enough >>>> writes over a short enough timeframe the SSD controller can run out of >>>> "pre-erased" blocks to use, and when that happens write speed slows >>>> down to the rate that can be done when a "block erase" has to occur >>>> before the actual writes can hit the media. Note that this "block >>>> erase" can also invove moving any partially used data sectors out of >>>> the block into another block, creating a "write amplification" >>>> situation as well. >>> >>> One of the best ways to gain speed and longevity is to buy an SSD that is way >>> larger than you need. So it always has empty blocks available. >>> >>> And can do the block erases in background >> >> Indutrial ssds do have spare space exactly in order to prolong lifetime. > > Even consumer SSD's have "spare space", for the same reason. They > just, typically, don't have as much spare space as the "server class" > drives do from the start. Interesting! Didn't know they did this in the consumer space. >> I think when ssds first came out, there was one vendor, STEC, if >> memory serves, that manufactured vastly over engineered drives in the >> beginning. They seemed to last forever. Then they learned of >> course, and started to reduce quality and lifetime to industry >> standards and of course the price as well. > > Yes, the race to the bottom on price. I read somewhere that the expected point of convergence between spinning and ssd in terms of dollar/GB is around 2030.