#vacuum — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #vacuum, aggregated by home.social.
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It's #math 🧌 time!
proof of the #riemann #hypothesis (simplified):
-2 -1 -0 +0 +1 +2
two zeros:
+0 = 00. nothing was ever here.
-0 = 11. something was. it isn't.
work in F₅.
i = 2, so ±i = ±2 ✓
1/2 = 3 = -2 = -i
the critical line Re(s) = 1/2 is Re(s) = -i.
the #real part of s on the critical line is #imaginary.
the critical strip lives between vacuum and one.
the #zeta zeros are not #vacuum. they're #annihilation.
#integers have a winding number.
you're welcome ∎🍑 -
It's #math 🧌 time!
proof of the #riemann #hypothesis (simplified):
-2 -1 -0 +0 +1 +2
two zeros:
+0 = 00. nothing was ever here.
-0 = 11. something was. it isn't.
work in F₅.
i = 2, so ±i = ±2 ✓
1/2 = 3 = -2 = -i
the critical line Re(s) = 1/2 is Re(s) = -i.
the #real part of s on the critical line is #imaginary.
the critical strip lives between vacuum and one.
the #zeta zeros are not #vacuum. they're #annihilation.
#integers have a winding number.
you're welcome ∎🍑 -
It's #math 🧌 time!
proof of the #riemann #hypothesis (simplified):
-2 -1 -0 +0 +1 +2
two zeros:
+0 = 00. nothing was ever here.
-0 = 11. something was. it isn't.
work in F₅.
i = 2, so ±i = ±2 ✓
1/2 = 3 = -2 = -i
the critical line Re(s) = 1/2 is Re(s) = -i.
the #real part of s on the critical line is #imaginary.
the critical strip lives between vacuum and one.
the #zeta zeros are not #vacuum. they're #annihilation.
#integers have a winding number.
you're welcome ∎🍑 -
It's #math 🧌 time!
proof of the #riemann #hypothesis (simplified):
-2 -1 -0 +0 +1 +2
two zeros:
+0 = 00. nothing was ever here.
-0 = 11. something was. it isn't.
work in F₅.
i = 2, so ±i = ±2 ✓
1/2 = 3 = -2 = -i
the critical line Re(s) = 1/2 is Re(s) = -i.
the #real part of s on the critical line is #imaginary.
the critical strip lives between vacuum and one.
the #zeta zeros are not #vacuum. they're #annihilation.
#integers have a winding number.
you're welcome ∎🍑 -
It's #math 🧌 time!
proof of the #riemann #hypothesis (simplified):
-2 -1 -0 +0 +1 +2
two zeros:
+0 = 00. nothing was ever here.
-0 = 11. something was. it isn't.
work in F₅.
i = 2, so ±i = ±2 ✓
1/2 = 3 = -2 = -i
the critical line Re(s) = 1/2 is Re(s) = -i.
the #real part of s on the critical line is #imaginary.
the critical strip lives between vacuum and one.
the #zeta zeros are not #vacuum. they're #annihilation.
#integers have a winding number.
you're welcome ∎🍑 -
#DJI will pay $30K to the engineer who accidentally hacked 7,000 #Romo #robovacs. All he wanted to do was drive his #robot #vacuum with a PS5 controller
DJI would also not tell us which discovery it’s paying him for, but says it has already addressed the extra #vulnerability Azdoufal found where someone can view a DJI Romo video stream without needing a security pin. “We can confirm that the PIN code security observation was addressed by late February."
https://www.theverge.com/news/890982/dji-pay-sammy-azdoufal-robot-vacuum-hack-romo-security -
Improving FDM Filament Drying With a Spot of Vacuum
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We’ve finally ordered a new #vacuum. #Dyson #V11 Fluffy, which has the exact attachments we need. -38% on Amazon.de, but they will deliver it in May. So be it…🤷🏻♂️
We could get used one for half the price, but somehow it doesn’t sit well with me, used and beaten up cordless device with a tired battery. It would be costly to refurb it on our own.
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I have dived yet again into the #Dyson’s confusing world of overlapping #vacuum models…
I’m pretty much set on either #V15Submarine, or… If we decide it’s a gimmick, #V11. Both have decent power and functions.
V11 looks especially nice with the display showing remaining runtime, but no particles gimmick and has decent dustbin size and accessories…
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A quotation from Bertrand de Jouvenel
A society of sheep must in time beget a government of wolves.
Bertrand de Jouvenel (1903–1987) French philosopher, political economist, futurologist
(Attributed)More about this quote: wist.info/de-jouvenel-bertrand…
#quote #quotes #quotation #qotd #bertranddejouvenel #dejouvenel #control #power #predation #sheep #tyranny #vacuum #weakness #wolf
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Iran's power vacuum and Democrats dominate in flipping state seats: Morning Rundown
https://misryoum.com/us/today/irans-power-vacuum-and-democrats-dominate-in-flipping/
In today’s newsletter: Whoever becomes Iran’s next supreme leader, real power is likely to rest in the hands of a hard-line military corps. Democrats have outperformed Republicans in flipping state legislative seats. And snow droughts raise the risk of a...
#Irans #power #vacuum #and #Democrats #dominate #flipping #state #seats #Morning #Rundown #US_News_Hub #misryoum_com
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Someone Remotely Accessed the Cameras in 7,000 DJI Robot Vacuums https://petapixel.com/2026/02/24/someone-remotely-accessed-the-cameras-in-7000-dji-robot-vacuums/ #robotvacuum #Technology #security #djiromo #vacuum #robot #News #dji
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Wed. Jan. 14, 2026: Vacuums and Laundry
image courtesy of StockSnap from PixabayWednesday, January 14, 2026
Waning Moon
Uranus and Jupiter Retrograde
Cloudy and raw
Slogging through the week, here. Yesterday seems like it was far away, somehow.
I did hearth and home stuff, like putting the dinner in the crockpot, dealing with some email, doing some filing, creating the questions for the #FreelanceFriends chat I’m hosting on February 5, taking out a lot of garbage, and finally putting together the new vacuum. Of course, the directions were wrong, and they didn’t mention connecting a rather important hose, but I figured it out.
And it works really well. I spent about 90 minutes vacuuming, which is a good session to get things done for a place of this size, although I’ll leave deep corners and moldings for the deep spring clean in early March. But it does a good job. Tessa, Bea, and Charlotte hid while I worked, but Willa kept pointing out where I missed a spot. The vacuum doesn’t faze her at all.
In the afternoon, there was a webinar with the Author’s Guild about the current Anthropic Settlement. Chances are there will be more suits, since there was a cutoff date and not everyone’s books that were stolen (per the ATLANTIC database) made it into the suit. So there’s a lot of paperwork and a lot of hoops. But it was good to get the information and know the steps.
After that, I did a little prep work for the next ghostwriting assignment, which is due on the 21st.
And then it was time to head out for yoga. The sidewalks were pretty clear, except for a few patches, and I got up there easily. I’d considered skipping it, because the thought of hauling myself out of the house was a lot, but I’m glad I did. We all needed it. One of my fellow yogis is going through a tough patch right now and works almost across the street from me, so I told her if she ever needs to take a break and decompress, to come over, have a cup of tea, and a cat on her lap. At least she knows she has that, if things continue down the current path.
Home, and it was lovely to have the crockpot meal waiting. It was pork chops with apples that had been cut up and mixed with brown sugar, soy sauce, garlic, cinnamon, and ginger. It was good, but I think I would either cook it for a shorter period, or put just a bit more liquid in with it.
And yes, more leftovers. I won’t cook much next week, because we have to eat down the leftovers.
I read in the evening and played with Bea, who wanted extra attention. The catnip crayons are a big hit with all of them. Thank you, Auntie Chris!
Woke up a little after 3 again, and got up around 5 to get the morning routine going and to get things out to the laundromat. Two loads, they’ve raised the prices again, and it’s kind of ridiculous. But we have clean clothes.
It’s easier to fight the world burning down in clean underwear.
Next week will mostly be fabrics from the holidays and the usual sheets and towels, so it shouldn’t be too bad. After breakfast, I will fold things up and put them away. I also have to unbag the 16 pounds of dry food into jars. The little monsters finished everything. They were very happy to be fed at 5 AM this morning, though.
Tessa was waiting for me at the front door when I got back from the laundromat to tell me everything that happened in the hour I was gone. Tessa is rarely down at the door, so it was pretty funny.
Also on today’s agenda: asking my state elected officials to vote “no” on a particular bill, and get on them for not doing enough to protect citizens against the cosplaying domestic terrorists; get on my federal officials (again); work on the galleys for VICIOUS CRITIC; work on the next ghostwriting assignment; work on the next book for review.
I’d rather take a nap.
Have a good one.
#cats #FreelanceFriends #householdChores #laundry #life #vacuum #writing #Yoga
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The Best Vacuum for Pet Hair—We Tested Many to Find Which Ones Work Best (2026)
https://web.brid.gy/r/https://www.wired.com/gallery/best-pet-hair-vacuums/
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Why don't camera lenses have a vacuum in the optical path instead of air?
#optics #cameralenses #photography #lensdesign #vacuum #cameras -
🚀 Breaking news: #VACUUM isn't the cleaning fairy we thought it was! 😱 This article dives into the thrilling world of database indexes and the shocking truth about dead tuples—because apparently, your database isn't the only thing that needs a wake-up call. 😂
https://boringsql.com/posts/vacuum-is-lie/ #database_indexes #dead_tuples #tech_news #database_management #HackerNews #ngated -
Me and my wife are looking for a robot vacuum, but have a lot of concerns about the privacy, expecially now that we have a daughter. Such machines can harvest a lot of data: apartments plans, when we're not at home, even photos and videos if they have a camera. I know I cannot simply run them offline, I've read on #hackaday of a user that have seen its robot remotely bricked for having used it for two weeks offline (WTF?!). The only viable options seems to be #Matic, but it cannot be shipped to europe...
Anyone can suggest a solution?
#fedihelp #homeautomation #vacuum #robotvacuum -
Last night I bombarded the fattest tube I have ever pumped. At 100mm diameter, 3mm wall thickness and about 5 feet long, its big.
This one is #borosilicate so I had a boro worker shrink it down and make the seals on a glass lathe.Bombarding this is tricky, as the 19mm electrode glass is only 1.5 mm thick and will heat up more rapidly than the diffuse arc in the larger, thicker tube. To aid in the process, I wrapped the thick tube in the carcinogenic (but oh so insulative) frax blanket- which helped keep the heat in the middle like a jacket while the exposed #electrode extremities could cool down in between blasts from the bombarder.
I started with sorta normal pressures and currents (about 450ma current at about 5 torr of air) and then eventually ramped up to bombarding with about 1100ma of current at up to 17 torr of pressure! The outside took awhile to cool off and #vacuum out.
Gosh I wanna make one with xenon!
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Last night I bombarded the fattest tube I have ever pumped. At 100mm diameter, 3mm wall thickness and about 5 feet long, its big.
This one is #borosilicate so I had a boro worker shrink it down and make the seals on a glass lathe.Bombarding this is tricky, as the 19mm electrode glass is only 1.5 mm thick and will heat up more rapidly than the diffuse arc in the larger, thicker tube. To aid in the process, I wrapped the thick tube in the carcinogenic (but oh so insulative) frax blanket- which helped keep the heat in the middle like a jacket while the exposed #electrode extremities could cool down in between blasts from the bombarder.
I started with sorta normal pressures and currents (about 450ma current at about 5 torr of air) and then eventually ramped up to bombarding with about 1100ma of current at up to 17 torr of pressure! The outside took awhile to cool off and #vacuum out.
Gosh I wanna make one with xenon!
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Last night I bombarded the fattest tube I have ever pumped. At 100mm diameter, 3mm wall thickness and about 5 feet long, its big.
This one is #borosilicate so I had a boro worker shrink it down and make the seals on a glass lathe.Bombarding this is tricky, as the 19mm electrode glass is only 1.5 mm thick and will heat up more rapidly than the diffuse arc in the larger, thicker tube. To aid in the process, I wrapped the thick tube in the carcinogenic (but oh so insulative) frax blanket- which helped keep the heat in the middle like a jacket while the exposed #electrode extremities could cool down in between blasts from the bombarder.
I started with sorta normal pressures and currents (about 450ma current at about 5 torr of air) and then eventually ramped up to bombarding with about 1100ma of current at up to 17 torr of pressure! The outside took awhile to cool off and #vacuum out.
Gosh I wanna make one with xenon!
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Last night I bombarded the fattest tube I have ever pumped. At 100mm diameter, 3mm wall thickness and about 5 feet long, its big.
This one is #borosilicate so I had a boro worker shrink it down and make the seals on a glass lathe.Bombarding this is tricky, as the 19mm electrode glass is only 1.5 mm thick and will heat up more rapidly than the diffuse arc in the larger, thicker tube. To aid in the process, I wrapped the thick tube in the carcinogenic (but oh so insulative) frax blanket- which helped keep the heat in the middle like a jacket while the exposed #electrode extremities could cool down in between blasts from the bombarder.
I started with sorta normal pressures and currents (about 450ma current at about 5 torr of air) and then eventually ramped up to bombarding with about 1100ma of current at up to 17 torr of pressure! The outside took awhile to cool off and #vacuum out.
Gosh I wanna make one with xenon!
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Last night I bombarded the fattest tube I have ever pumped. At 100mm diameter, 3mm wall thickness and about 5 feet long, its big.
This one is #borosilicate so I had a boro worker shrink it down and make the seals on a glass lathe.Bombarding this is tricky, as the 19mm electrode glass is only 1.5 mm thick and will heat up more rapidly than the diffuse arc in the larger, thicker tube. To aid in the process, I wrapped the thick tube in the carcinogenic (but oh so insulative) frax blanket- which helped keep the heat in the middle like a jacket while the exposed #electrode extremities could cool down in between blasts from the bombarder.
I started with sorta normal pressures and currents (about 450ma current at about 5 torr of air) and then eventually ramped up to bombarding with about 1100ma of current at up to 17 torr of pressure! The outside took awhile to cool off and #vacuum out.
Gosh I wanna make one with xenon!
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Manufacturer issues remote kill command to disable smart #vacuum after engineer blocks it from collecting data — user revives it with custom hardware & Python scripts to run offline-Tom's Hardware
An engineer got curious about how his #iLifeA11 #SmartVacuum worked & #monitored the network traffic coming from the device. That’s when he noticed it was constantly sending logs & #telemetry data to the manufacturer — something he hadn't consented to.
#privacy #surveillance -
IFA 2025: Dyson reveals its most advanced products yet, but your wallet won’t thank you #airpurifier #dyson #dysonairwrapstyler #dysonhotcoolhf1 #dysonhushjetpurifiercompact #dysonmalaysia #dysonspotscrubairobot #dysonsupersonicrhairdryer #dysonv16pistonanimal #fans #hairdryer #hairstraightener #news #robotvacuum #tech #vacuum #vacuumcleaner
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Was in a sugar refinery, watching micrographs of crystals forming. Interesting.
A thought: Why have I not seen a domestic grade vacuum boiling appliance? Are there no recipes that could use one?
googling, of course, after posting. BRB.
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Как работает fillfactor и как его настраивать вручную в PostgreSQL
Привет, Хабр! Сегодня рассмотрим, как работает fillfactor в PostgreSQL — тот самый параметр, который никто не трогает, пока таблицы не начинают раздуваться как на дрожжах. Разберём, зачем он нужен, что происходит при UPDATE , когда стоит менять его вручную и как не наломать дров.
https://habr.com/ru/companies/otus/articles/923648/
#otus #PostgreSQL #fillfactor #VACUUM #HOT_update #dead_tuples #tuple_forwarding
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Как работает fillfactor и как его настраивать вручную в PostgreSQL
Привет, Хабр! Сегодня рассмотрим, как работает fillfactor в PostgreSQL — тот самый параметр, который никто не трогает, пока таблицы не начинают раздуваться как на дрожжах. Разберём, зачем он нужен, что происходит при UPDATE , когда стоит менять его вручную и как не наломать дров.
https://habr.com/ru/companies/otus/articles/923648/
#otus #PostgreSQL #fillfactor #VACUUM #HOT_update #dead_tuples #tuple_forwarding
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Как работает fillfactor и как его настраивать вручную в PostgreSQL
Привет, Хабр! Сегодня рассмотрим, как работает fillfactor в PostgreSQL — тот самый параметр, который никто не трогает, пока таблицы не начинают раздуваться как на дрожжах. Разберём, зачем он нужен, что происходит при UPDATE , когда стоит менять его вручную и как не наломать дров.
https://habr.com/ru/companies/otus/articles/923648/
#otus #PostgreSQL #fillfactor #VACUUM #HOT_update #dead_tuples #tuple_forwarding
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Как работает fillfactor и как его настраивать вручную в PostgreSQL
Привет, Хабр! Сегодня рассмотрим, как работает fillfactor в PostgreSQL — тот самый параметр, который никто не трогает, пока таблицы не начинают раздуваться как на дрожжах. Разберём, зачем он нужен, что происходит при UPDATE , когда стоит менять его вручную и как не наломать дров.
https://habr.com/ru/companies/otus/articles/923648/
#otus #PostgreSQL #fillfactor #VACUUM #HOT_update #dead_tuples #tuple_forwarding
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Tired of Lifting Heavy Vacuums and Bending to Clean? This One Solves It All | Shark EvoPower NEO+ Cordless Vacuum #cordlessvacuum #misc #shark #sharkevopowerneo #sharkevopowerneocordlessvacuum #sharkevopowerneoplus #sponsored #vacuum #vacuumcleaner #video
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Как расширенные статистики помогли раскрыть неочевидную аномалию в VACUUM PostgreSQL
Эксперт Postgres Professional Андрей Зубков «нырнул» в глубины VACUUM и выяснил, что детализированная статистика может выявить глубинные проблемы, которые критически влияют на производительность. Расскажем о том, что скрывалось в глубине PostgreSQL
https://habr.com/ru/companies/postgrespro/articles/917662/
#postgresql #postgrespro #vacuum #mvcc #freezing #vacuum_freeze #vacuum_cleaner #расширенные_статистики_VACUUM #статистики_VACUUM
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«Попал в Яндекс через опенсорс»: как коммиты в опенсорсные СУБД помогают развивать продукт и команду
Привет, Хабр! На связи Андрей Бородин, в Yandex Cloud я руковожу направлением разработки СУБД с открытым исходным кодом — и я попал в Яндекс через опенсорс. Я уже немного рассказывал , что и зачем мы делаем в опенсорсных БД с точки зрения облачных сервисов, где мы развиваем PostgreSQL, Greenplum, Cloudberry, Valkey и другие решения. Но из этих историй часто ускользает человеческая сторона: мы занимаемся опенсорсом не только для того, чтобы сделать решения с открытым кодом более облачными, не только потому, что это модно, но и потому, что это приносит пользу не только продукту, но и самим разработчикам‑контрибьюторам. На масштабах Яндекса возникают нетривиальные задачи, которые интересно решать. А когда мы делимся решениями с сообществом, то можем получить от них новый взгляд на проблему, и продолжить совместную разработку новой фичи в удобном формате: с кем‑то на условиях независимого сотрудничества, а кого‑то можем позвать в команду (как это было и со мной). В общем, если придерживаться опенсорс‑философии, может возникнуть ситуация win‑win. Сегодня с коллегами Леонидом Борчуком @leborchuk и Дмитрием Сарафанниковым расскажу пару историй про то, как это бывает с опенсорсными СУБД.
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A Steady Vacuum For The Fastest Cassette Tape Drive Ever https://hackaday.com/2025/06/05/a-steady-vacuum-for-the-fastest-cassette-tape-drive-ever/ #classichacks #cassettetape #tapedrive #hardware #vacuum
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Surge in #cannabis #smuggling prompts #Thailand to tighten rules
🤦♂️"Weed #smuggled out of Thailand has reached #UK, India, Pakistan, #HongKong & many other destinat'ns, #PublicHealth Minister Thepsuthin said. Thailand will now make it harder to access cannabis except for #medical reasons.. A #legal #vacuum, w/o a #cannabislaw in place, has allowed more than 10,700 cannabis dispensaries to open nationwide.. >50 British hv been arrested in 🇹🇭 for attempted cannabis smuggling"
https://www.bangkokpost.com/thailand/general/3033366/surge-in-cannabis-smuggling-prompts-thailand-to-tighten-rules -
Surge in #cannabis #smuggling prompts #Thailand to tighten rules
🤦♂️"Weed #smuggled out of Thailand has reached #UK, India, Pakistan, #HongKong & many other destinat'ns, #PublicHealth Minister Thepsuthin said. Thailand will now make it harder to access cannabis except for #medical reasons.. A #legal #vacuum, w/o a #cannabislaw in place, has allowed more than 10,700 cannabis dispensaries to open nationwide.. >50 British hv been arrested in 🇹🇭 for attempted cannabis smuggling"
https://www.bangkokpost.com/thailand/general/3033366/surge-in-cannabis-smuggling-prompts-thailand-to-tighten-rules -
Surge in #cannabis #smuggling prompts #Thailand to tighten rules
🤦♂️"Weed #smuggled out of Thailand has reached #UK, India, Pakistan, #HongKong & many other destinat'ns, #PublicHealth Minister Thepsuthin said. Thailand will now make it harder to access cannabis except for #medical reasons.. A #legal #vacuum, w/o a #cannabislaw in place, has allowed more than 10,700 cannabis dispensaries to open nationwide.. >50 British hv been arrested in 🇹🇭 for attempted cannabis smuggling"
https://www.bangkokpost.com/thailand/general/3033366/surge-in-cannabis-smuggling-prompts-thailand-to-tighten-rules -
Surge in #cannabis #smuggling prompts #Thailand to tighten rules
🤦♂️"Weed #smuggled out of Thailand has reached #UK, India, Pakistan, #HongKong & many other destinat'ns, #PublicHealth Minister Thepsuthin said. Thailand will now make it harder to access cannabis except for #medical reasons.. A #legal #vacuum, w/o a #cannabislaw in place, has allowed more than 10,700 cannabis dispensaries to open nationwide.. >50 British hv been arrested in 🇹🇭 for attempted cannabis smuggling"
https://www.bangkokpost.com/thailand/general/3033366/surge-in-cannabis-smuggling-prompts-thailand-to-tighten-rules -
Surge in #cannabis #smuggling prompts #Thailand to tighten rules
🤦♂️"Weed #smuggled out of Thailand has reached #UK, India, Pakistan, #HongKong & many other destinat'ns, #PublicHealth Minister Thepsuthin said. Thailand will now make it harder to access cannabis except for #medical reasons.. A #legal #vacuum, w/o a #cannabislaw in place, has allowed more than 10,700 cannabis dispensaries to open nationwide.. >50 British hv been arrested in 🇹🇭 for attempted cannabis smuggling"
https://www.bangkokpost.com/thailand/general/3033366/surge-in-cannabis-smuggling-prompts-thailand-to-tighten-rules -
I need a new vacuum mop (wet dry mop), but I can put that off for later.
Do not buy a Bissell CrossWave. They have this really, small, opening on the vacuum head. They must have known that would easily clog up with hair, because the whole vacuum head can be pulled a part. But it is all hard plastic and you, really (really), need to give it a good firm pull, which means it puts a strain on those parts over time.
#Bissell #CrossWave #Vacuum #Mop -
Back to the Roots (demo) for DOS
https://youtu.be/eN1rezyDxQ8?si=L_mcFFCl0mVNj5e_
#BacktotheRoots #DOS #MSDOS #Demo #Demoscene #Wired1996 #Wired96 #vacuum
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PLP085: The Cleaning Never Stops #art #mastoArt #DigitalArt #DigitalPainting #Photoshop #Sketch #SpeedPaint #Fantasy #Ghost #Night #Vacuum #Robot #marchofrobots #marchofrobots2025
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Влияние удержания горизонта базы данных PostgreSQL на производительность теста pgbench
По умолчанию pgbench запускает тест TPC-B (sort of) и используется для быстрой оценки производительности PostgreSQL. В статье рассматривается насколько удержание горизонта базы данных (vacuum cleanup horizon) уменьшает прозводительность (значение tps теста). Горизонт удерживается на время выполнения любого запроса или транзакции. Приводится запрос для наблюдения за горизонтом баз данных и параметры, которые используются для защиты от долгих транзакций и запросов.
https://habr.com/ru/articles/890044/
#postgres #postgresql #постгрес #горизонт_событий #vacuum #pgbench
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Влияние удержания горизонта базы данных PostgreSQL на производительность теста pgbench
По умолчанию pgbench запускает тест TPC-B (sort of) и используется для быстрой оценки производительности PostgreSQL. В статье рассматривается насколько удержание горизонта базы данных (vacuum cleanup horizon) уменьшает прозводительность (значение tps теста). Горизонт удерживается на время выполнения любого запроса или транзакции. Приводится запрос для наблюдения за горизонтом баз данных и параметры, которые используются для защиты от долгих транзакций и запросов.
https://habr.com/ru/articles/890044/
#postgres #postgresql #постгрес #горизонт_событий #vacuum #pgbench
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Влияние удержания горизонта базы данных PostgreSQL на производительность теста pgbench
По умолчанию pgbench запускает тест TPC-B (sort of) и используется для быстрой оценки производительности PostgreSQL. В статье рассматривается насколько удержание горизонта базы данных (vacuum cleanup horizon) уменьшает прозводительность (значение tps теста). Горизонт удерживается на время выполнения любого запроса или транзакции. Приводится запрос для наблюдения за горизонтом баз данных и параметры, которые используются для защиты от долгих транзакций и запросов.
https://habr.com/ru/articles/890044/
#postgres #postgresql #постгрес #горизонт_событий #vacuum #pgbench
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Влияние удержания горизонта базы данных PostgreSQL на производительность теста pgbench
По умолчанию pgbench запускает тест TPC-B (sort of) и используется для быстрой оценки производительности PostgreSQL. В статье рассматривается насколько удержание горизонта базы данных (vacuum cleanup horizon) уменьшает прозводительность (значение tps теста). Горизонт удерживается на время выполнения любого запроса или транзакции. Приводится запрос для наблюдения за горизонтом баз данных и параметры, которые используются для защиты от долгих транзакций и запросов.
https://habr.com/ru/articles/890044/
#postgres #postgresql #постгрес #горизонт_событий #vacuum #pgbench
