[personal profile] mjg59
Haswell and Broadwell (Intel's previous and current generations of x86) both introduced a range of new power saving states that promised significant improvements in battery life. Unfortunately, the typical experience on Linux was an increase in power consumption. The reasons why are kind of complicated and distinctly unfortunate, and I'm at something of a loss as to why none of the companies who get paid to care about this kind of thing seemed to actually be caring until I got a Broadwell and looked unhappy, but here we are so let's make things better.

Recent Intel mobile parts have the Platform Controller Hub (Intel's term for the Southbridge, the chipset component responsible for most system i/o like SATA and USB) integrated onto the same package as the CPU. This makes it easier to implement aggressive power saving - the CPU package already has a bunch of hardware for turning various clock and power domains on and off, and these can be shared between the CPU, the GPU and the PCH. But that also introduces additional constraints, since if any component within a power management domain is active then the entire domain has to be enabled. We've pretty much been ignoring that.

The tldr is that Haswell and Broadwell are only able to get into deeper package power saving states if several different components are in their own power saving states. If the CPU is active, you'll stay in a higher-power state. If the GPU is active, you'll stay in a higher-power state. And if the PCH is active, you'll stay in a higher-power state. The last one is the killer here. Having a SATA link in a full-power state is sufficient to keep the PCH active, and that constrains the deepest package power savings state you can enter.

SATA power management on Linux is in a kind of odd state. We support it, but we don't enable it by default. In fact, right now we even remove any existing SATA power management configuration that the firmware has initialised. Distributions don't enable it by default because there are horror stories about some combinations of disk and controller and power management configuration resulting in corruption and data loss and apparently nobody had time to investigate the problem.

I did some digging and it turns out that our approach isn't entirely inconsistent with the industry. The default behaviour on Windows is pretty much the same as ours. But vendors don't tend to ship with the Windows AHCI driver, they replace it with the Intel Rapid Storage Technology driver - and it turns out that that has a default-on policy. But to make things even more awkwad, the policy implemented by Intel doesn't match any of the policies that Linux provides.

In an attempt to address this, I've written some patches. The aim here is to provide two new policies. The first simply inherits whichever configuration the firmware has provided, on the assumption that the system vendor probably didn't configure their system to corrupt data out of the box[1]. The second implements the policy that Intel use in IRST. With luck we'll be able to use the firmware settings by default and switch to the IRST settings on Intel mobile devices.

This change alone drops my idle power consumption from around 8.5W to about 5W. One reason we'd pretty much ignored this in the past was that SATA power management simply wasn't that big a win. Even at its most aggressive, we'd struggle to see 0.5W of saving. But on these new parts, the SATA link state is the difference between going to PC2 and going to PC7, and the difference between those states is a large part of the CPU package being powered up.

But this isn't the full story. There's still work to be done on other components, especially the GPU. Keeping the link between the GPU and an internal display panel active is both a power suck and requires additional chipset components to be powered up. Embedded Displayport 1.3 introduced a new feature called Panel Self-Refresh that permits the GPU and the screen to negotiate dropping the link, leaving it up to the screen to maintain its contents. There's patches to enable this on Intel systems, but it's still not turned on by default. Doing so increases the amount of time spent in PC7 and brings corresponding improvements to battery life.

This trend is likely to continue. As systems become more integrated we're going to have to pay more attention to the interdependencies in order to obtain the best possible power consumption, and that means that distribution vendors are going to have to spend some time figuring out what these dependencies are and what the appropriate default policy is for their users. Intel's done the work to add kernel support for most of these features, but they're not the ones shipping it to end-users. Let's figure out how to make this right out of the box.

[1] This is not necessarily a good assumption, but hey, let's see

Podfic: Breaking Point by Norah

Apr. 27th, 2015 09:36 am
chemm80: (turnyourprettyhead)
[personal profile] chemm80 posting in [community profile] amplificathon
Title: Breaking Point
Author: Norah
Fandom, Pairing: Point Break/The Fast and the Furious, Johnny Utah/Brian O'Conner
Rating: Explicit
Author's Summary: A Point Break/The Fast and the Furious crossover romance with a sexuality crisis, surfing, a vaguely self-insertish OFC, and lots of beer and sex. Johnny Utah/Brian O'Conner.
Reader's Notes: I really had never thought about the similarities between these two movies. I'm a little slow. Thanks to Norah for leaving blanket permission, and to [personal profile] eve_n_furter for the rec.



Length: 03:25:24

MP3 (Click for streaming link; Right-click and Save-As to download) || 282 MB

Or stream:




Points: 10 + 5 + 10 X 7 = 175 total points

Echoes by metisket

Apr. 27th, 2015 07:17 am
rhea314: Mitsuru (Gwen & me) (Mitsuru)
[personal profile] rhea314 posting in [community profile] amplificathon
Title: Echoes
Author: metisket
Reader: Rhea314
Fandom: Hikaru no Go
Character: Shindou Mitsuko, Shindou Hikaru
Rating: General Audiences
Warnings: no archive warnings apply
Summary: Hikaru's mother tries to piece together what's going on in his life, but he really isn't giving her much to work with.
Text: here
Length 0:04:56
Link: here

10+10 x 1 = 20
dr_fumbles_mcstupid: (Default)
[personal profile] dr_fumbles_mcstupid posting in [community profile] amplificathon
Title: Ten Additional Things Than Never Happened to Buffy Summers

Fandoms: Buffy the Vampire Slayer, Boondock saints, Star Wars Original Trilogy, Godzilla, The Island, Jumanji,The Silmarillion, Star Trek: The Next Generation, The Rock, Pirates of the Caribbean: Dead Man's Chest

pairing: Gen

Author: Jedi Buttercup

Time: 6:46

MP3

Streaming on AO3

Points: (a) 5+10+10+10+10+10+10+10+10+10+10 = 105 + (b) 5+10+10+10+10+10+10+10+10+10+10 = 105 = 210
dr_fumbles_mcstupid: (Default)
[personal profile] dr_fumbles_mcstupid posting in [community profile] amplificathon
Title: Ten More Things That Never Happened To Buffy Summers

Fandoms: Buffy the Vampire Slayer, Stargate SG-1,X-Men, Bones, Slither, Legally Blonde, Lord of the Rings, Firefly, Pirates of the Caribbean: The Curse of the Black Pearl, The Mummy, Jurassic Park,

pairing: Gen

Author: Jedi Buttercup

Time: 7:05

MP3

Streaming on AO3

Points:(a) 5+5+5+5+10+10+10+10+10+10+10 = 90 + (b) 5+5+5+5+10+10+10+10+10+10+10 =90 x 1 +180
dr_fumbles_mcstupid: (Default)
[personal profile] dr_fumbles_mcstupid posting in [community profile] amplificathon
Title: Ten Things That Never Happened to Buffy Summers

Fandoms: Buffy the Vampire Slayer, CSI, Dead Zone, Survivor, Underworld, Men in Black, Harry Potter, Spider-Man, The X-Files, Stargate Atlantis

pairing: Gen

Author: Jedi Buttercup

Time: 6:49

MP3

Streaming on AO3

Points: (a)5+1+5+10+10+10+10+10+!0+10+10= 91 + (b)5+1+5+10+10+10+10+10+!0+10+10= 91 x1 = 182
dr_fumbles_mcstupid: (Default)
[personal profile] dr_fumbles_mcstupid posting in [community profile] amplificathon
Title: Ten Other Things That Never Happened to Buffy Summers

Fandoms: Buffy the Vampire Slayer, The Dresden Files, Equilibrium, NEXT, Reign of Fire, Live Free or Die Hard, Pirates of the Caribbean: At World's End, National Treasure Series, Peter Pan - J. M. Barrie, Transformers (Bay Movies)

pairing: Gen

Author: Jedi Buttercup

Time: 6:54

MP3

Streaming on AO3

points (a) 5+5+10+10+10+10+10+10+10+10+10 (b) 5+5+10+10+10+10+10+10+10+10+10 x 1 = 200

(no subject)

Apr. 27th, 2015 12:11 am
synecdochic: torso of a man wearing jeans, hands bound with belt (Default)
[personal profile] synecdochic
Mondays, every week, let's celebrate ourselves, to start the week right. Tell me what you're proud of. Tell me what you accomplished last week, something -- at least one thing -- that you can turn around and point at and say: I did this. Me. It was tough, but I did it, and I did it well, and I am proud of it, and it makes me feel good to see what I accomplished. Could be anything -- something you made, something you did, something you got through. Just take a minute and celebrate yourself. Either here, or in your journal, but somewhere.

(And if you feel uncomfortable doing this in public, I've set this entry to screen any anonymous comments, so if you want privacy, comment anonymously and I won't unscreen it. Also: yes, by all means, cheer each other on when you see something you want to give props to!)

No Fault

Apr. 26th, 2015 10:35 pm
reena_jenkins: (also for podficcing)
[personal profile] reena_jenkins posting in [community profile] amplificathon


Title: No Fault
Author: [archiveofourown.org profile] rageprufrock 
Reader: [archiveofourown.org profile] reena_jenkins 
Coverartist: [archiveofourown.org profile] reena_jenkins 
Rating: PG-13
Fandoms: CW RPF
Pairings: Michael Rosenbaum/Tom Welling
Length: 00:15:59

Author's Summary: "I have no idea what anybody is talking about today," Mike admitted.

Download Link: You can download this podfic as an mp3 right over here (thank you, paraka, for hosting me).

Points: (5+10)x2 = 30 points
knight_tracer: (Default)
[personal profile] knight_tracer posting in [community profile] amplificathon
Title: Like Dylan in the Movies
Author: [archiveofourown.org profile] chash
Reader: [personal profile] knight_tracer
Fandom: Code Name Verity/I Capture the Castle
Characters: Maddie Brodatt, Cassandra Mortmain
Rating: G
Length: 4:32
Summary: Maddie's never met a film star before.

Links: mp3

Title: Still in the Land of the Sun
Author: [archiveofourown.org profile] chash
Reader: [personal profile] knight_tracer
Fandom: Code Name Verity/I Capture the Castle
Characters: Maddie Brodatt, Cassandra Mortmain
Rating: G
Length: 4:16
Summary: Maddie is early to tea.

Links: mp3

Title: Our Leaves Are Still Green
Author: [archiveofourown.org profile] chash
Reader: [personal profile] knight_tracer
Fandom: Code Name Verity/I Capture the Castle
Pairings: Stephen Colley/Cassandra Mortmain
Rating: G
Length: 5:50
Summary: Maddie has a caller.

Links: mp3

Notes: The whole series can be found here

Points: [10+10+10+10] + [10+10+10+10] + [10+10+10] = 110

[Avengers] Descent

Apr. 26th, 2015 10:25 pm
tinypinkmouse: (Default)
[personal profile] tinypinkmouse posting in [community profile] amplificathon
Descent by Teyke
Fandom: Marvel 616, Avengers
Rating: E
Relationships: Hank Pym/Janet Van Dyne, Steve Rogers/Tony Stark
Summary: A hundred years ago humanity fled to the skies to escape the Darkness spreading across the land. Now the Flying Cities are mysteriously sinking, imperilling every man, woman, and child who lives there. Together with the transmution mages Henry Pym and Lady Janet Van Dyne, and joined by the amnesiac immortal Dr. Donald Blake, High Wizard Anthony Stark mounts an expedition down into the Dark, determined to uncover the secrets of the magical calamity that wiped humanity from the face of the Earth.
Length: 7:19:33
mp3 (right click and and save as)
Points: 5(a) + 10+5(b) + (c) = 20 x 20 = 400

Amplificathon standings, week 6

Apr. 26th, 2015 12:57 pm
podmod: (Default)
[personal profile] podmod posting in [community profile] amplificathon
hi everyone, [personal profile] kalakirya here! we're well into the homestretch, the end is in sight, but the competition is still going! You've got until it is no longer April anywhere in the world - check this clock to know when that is for you!

by my somewhat shaky count (collabs make adding up the precise number of podfics posted kinda tricky), we're a hair short of 500 podfics posted (currently ~490) and 300 hours (currently ~291) which is INCREDIBLE and SO VERY VERY EXCITING YOU GUYS WE CAN'T EVEN

however, we know that what you really want to know is where the standings are! so:

as of 1:13pm, MDT (UTC-6), April 26, 2015, the standings are... (ETA:there was a spreadsheet malfunction that has been solved as of 11:21pm) )
fleurrochard: A black and white picture of a little girl playing air-guitar and singing (Default)
[personal profile] fleurrochard posting in [community profile] amplificathon
Pod Together Lightning Round 7, May 2015
One Month, One Fanwork
Sign-ups open on May 1 at dreamwidth and livejournal


Podficcers and writers, join us for Pod Together Lightning, a quickfire collaboration challenge! Over the course of a month, writers and podficcers work together to create a fanwork that the podficcer will perform. It could be short and sweet or long and savory, something you've never tried before or something you've always loved doing, poetry or radioplay or prose -- whatever your partnership decides. Join us and collaborate, create, and have fun!

Sign-ups for Round 7 will open May 1 at [community profile] pt_lightning and [livejournal.com profile] pt_lightning. For more information, visit the Round 7 Announcement.
fresne: Circe (Default)
[personal profile] fresne posting in [community profile] amplificathon
Title: Down the River in a Lost World
Writer/Reader: fresne
Fandom: Sherlock BBC, Jules Verne's Journey to the Center of the Earth, Haggard's Ayesha
(sadly, despite the title not ACD's Lost World, but still dinosaurs). Also, a Bones fusion, which if it comes to it is an AU of ACD's Sherlock anyway.
Pairings: Sherlock/John
Series: Variations on an Equation series, this is a series of Omegaverse stories that AU each other. Each story is a variation on a gender pairing of Sherlock/John as male, female, alpha, omega, beta. This particular story is FemaleAlpha-Sherlock/FemaleOmega-John.
Rating: PG-13
Music Credit: Sound Bible sound effects
Size: 5.094, 14:29
Warnings: Omegaverse. Sex prior to heat and sex during heat. Female pregnancy.
Summary: The idea that Professor Moriarty's project for a power station at this military base was somehow of greater value than this precious find of a several thousand year old mummified body was bad enough. The fresh corpse missing head and hands that had had appeared at her dig site was an insult.
 
As if she couldn't identify a body with less. She was the foremost forensic anthropologist in the world. Agent Joan Watson said, "I believe you, Doc." She also said she'd consider coitus after the case was solved. Thus motivated, Sherlock set to analysis.
 
How dinosaurs came into the picture, now that was just ridiculous. Though Sherlock quite liked it.
 
 

Title: Six to One
Writer/Reader: fresne
Fandom: Sherlock BBC, Land of the Lost
Pairings: Sherlock/John
Series: Variations on an Equation series, this is a series of Omegaverse stories that AU each other. Each story is a variation on a gender pairing of Sherlock/John as male, female, alpha, omega, beta. This particular story is Other-Sherlock/MaleOmega-John. (I'll mention the reason Sherlock always refers to John as she/her is because she's Altrusians/the smart Sleestacks and given the theme of these stories, I messed with things and gave them only one gender, and everyone is she/her. That's not a Land of the Lost thing. It's a this story thing.)
Rating: NC-17
Music Credit: Sound Bible sound effects
Size: 3, 8:39
Warnings: Omegaverse. Err... pouch manipulation, egg birthing. Sex pollen that results in a hand job.
Summary: She'lok's prurient interest in gender dimorphism had always been a bit... low for such an evolved being, but to encounter John, a life form from a species with six genders, it was just like the Winter Solstice festival.
 
There was also saving the world, but really... six genders instead of one... lovely.
 
Podfic link

(fandom:1+10+10+relationships:1)*2=44
(fandom:1+10+relationships:1)*1=12
dr_fumbles_mcstupid: (Default)
[personal profile] dr_fumbles_mcstupid posting in [community profile] amplificathon

Title: Tie A Ribbon Around My Heart
Author: AndreaLyn
Summary: There's a sea of love letters, boxes of chocolates, and some subtle (or obvious, depending who you ask) flirting.
Fandom: Tin Man
pairing: Glitch/Cain
Time:16:02
MP3
Streaming on AO3



Points 10+10 x 2 = 40

Tin man - Impermanence

Apr. 25th, 2015 11:00 pm
dr_fumbles_mcstupid: (Default)
[personal profile] dr_fumbles_mcstupid posting in [community profile] amplificathon

Title: Impermanence
Author: AndreaLyn
Summary:The one constant thing over many annuals is that things change and never last. Glitch becomes Ambrose but nothing ever lasts forever.
Fandom: Tin Man
pairing: Cain/Ambrose, Glitch/Cain, Jeb/OFC, Azkedelie/OMC
Time:57:21
MP3, M4B
Streaming on Ao3,



Points 10+ 10+10+10+10 = 50 X 4 = 200

Lacrymosa

Apr. 25th, 2015 11:48 pm
reena_jenkins: (also for podficcing)
[personal profile] reena_jenkins posting in [community profile] amplificathon


Title: Lacrymosa
Author: [archiveofourown.org profile] callunavulgari 
Reader: [archiveofourown.org profile] reena_jenkins 
Coverartist: [archiveofourown.org profile] reena_jenkins 
Rating: R
Fandoms: Avengers (movie'verse)
Pairings: Tony Stark/Loki
Warnings: Alternate Universe - Canon Divergence, Sexual Slavery, Non-Sexual Slavery, Jotunn | Frost Giant, Loki Does What He Wants, Dystopia, The Jotuns Win The First War For Midgard, Character Death (Steve Rogers)
Music:
Sleep (instrumental), as performed by My Chemical Romance
Length: 00:41:22

Author's Summary: "“I’m beginning to think that thawing out you monkeys was a mistake,” the god says, narrowing his eyes at Tony. They’re the color of blood, or rubies, Tony supposes—pick your poison and all that. Everything is cold—cold is all that Tony’s ever known, he’s never known the warmth of the sun on his back, the cold are forever daggers of jagged ice pumping through his blood—but this god radiates frost, like standing in the middle of Antarctica in his birthday suit. The foot on his back twists, grinding him into the ground. His knees burn. His breath fogs the air. Frostbite eats away at the skin of his back, the cold devouring him alive.

Tony grins crookedly, his cheek pressed to the icy ground and purrs, “But then where would your entertainment come from?”"


Download Link: You can download this podfic as an mp3 right over here (thank you, paraka, for hosting me).

Points: (1+10)x4 = 44 points
reena_jenkins: (also for podficcing)
[personal profile] reena_jenkins posting in [community profile] amplificathon


Title: Buffy's Guide to Being Normal (in 1973)
Author: [archiveofourown.org profile] pprfaith 
Reader: [archiveofourown.org profile] reena_jenkins 
Coverartist: [archiveofourown.org profile] reena_jenkins  
Rating: PG-13
Fandoms: Buffy the Vampire Slayer, X-Men First Class, X-Men: Days of Future Past
Pairings: Buffy Summers/Erik Lensherr/Charles Xavier, not-quite Buffy Summers/Logan
Warnings: Crossover, Alternate Timelines, Community: wishlist_fic, Prompt Fic, schmoopy angst, Time Travel, Sequel, Dimension Travel, angsty, Happy Ending, Threesome, follows dark and light (part of the 1962!verse)
Music:
Tie A Yellow Ribbion Round The Ole Oak Tree, as performed by Tony Orlando & Dawn
Length: 00:21:37

Author's Summary: "In which Buffy thought making it to 1973 meant she'd have a quiet life."

Download Link: You can download this podfic as an mp3 right over here (thank you, paraka, for hosting me).

Points: (5+5+10+10)x3 = 90 points

***I counted X-Men: Days of Future Past as a new fandom, as per the previous Twitter conversation***

[personal profile] b7_kerravon posting in [community profile] amplificathon
Title: Armageddon

Author: Daegaer
Reader: kerravon
Fandoms: Good Omens, Hitchhiker's Guide
Pairing/Characters: Gen, Aziraphale, Crowley, Ford Prefect
Warnings: None
Rating: Gen
Length: 12 Minutes 04 Seconds

Summary: Author's Summary: "Aziraphale reads something new."


MP3 Podfic Direct Download (11.3 MB): Armageddon - MP3 Podfic
M4b Audiobook Direct Download (1.5 MB):Armageddon - M4b

The music interludes is from "The Hitchhiker's Guide to the Galaxy" TV show.

Points: [5+10(a) + 10+10(b)] x2 = 70
[personal profile] b7_kerravon posting in [community profile] amplificathon
Title: Pact

Author: icarus_chained
Reader: kerravon
Fandoms: Good Omens, Supernatural, Norse mythology
Pairing/Characters: Gen, Aziraphale, Crowley, Hel, (refers heavily to events from "You Break It..." and to SPN Gabriel and Norse mythology Loki)
Warnings: None
Rating: Teen
Length: 24 Minutes 22 Seconds

Summary: Author - "Direct sequel to You Break It. Hel goes to thank the angel on her father and Gabriel's behalf, and meets the GO duo."

MP3 Podfic Direct Download (22.3 MB): Pact - MP3 Podfic
M4b Audiobook Direct Download (2.9 MB):Pact - M4b

The music interludes are from "Debt of Gratitude" by Andy Chrisman. Entire Song Here

Points: [5+1+10(a) + 10+1+10(b)] x3 = 111

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