АМ
cAdvisor на 400 контейнеров
а несколько разных и по группам разделить?
Size: a a a
2019 October 31
W
а несколько разных и по группам разделить?
Один железный сервер. 400 lxd
rd
SRE и DevOops =)
EG
Не знаю. Ни разу не видел
У мну тоже какое-то плавающее (: Разберусь - отпишу
I
что цвет ниток означает?
rd
что цвет ниток означает?
Цвет ничего не значит, просто разные мотки.
AK
Максимально толерантный ответ.
MK
Но чорного и голубого там нет ;)
2019 November 02
AS
на srecon был товарищ который предлагал подумать над математикой на салфетке. предложил подписаться на набор задчек на эту тему. ну я и подписался.
вот первая задачка
вот первая задачка
Problem #1: How much will the storage of logs cost for a standard, monolithic 100,000 RPS web application?
You can find many numbers you might need on sirupsen/base-rates. If you don't, consider submitting a PR! I hope for that repo to grow to be the canonical source for system's napkin math.
Don't overcomplicate the solution by including e.g. CDN logs, slow query logs, etc. Keep it simple.
You might want to refresh your memory on Fermi Problems. Remember that you need less precision than you think. Remember that your goal is just to get the exponent right, x in n * 10^x.
Wolframalpha is good at calculating with units, you may use that the first few times--but over time the goal is for you to be able to do these calculations with no aids!
Last Problem's Solution
Question: How much will the storage of logs cost for a standard, monolithic 100,000 RPS web application?
Answer: First I jotted down the basics and convert them to scientific notation for easy calculation ~1*10^3 bytes/request (1 KB), 9 * 10^4 seconds/day, and 10^5 requests/second. Then multiplied these numbers into storage per day: 10^3 bytes/request * 9 * 10^4 seconds/day * 10^5 requests/second = 9 * 10^12 bytes/day = 9 Tb/day. Then we need to use the monthly cost for disk storage from sirupsen/napkin-math (or your cloud's pricing calculator) -- $0.01 GB/month. So we have 9 Tb/day * $0.01 GB/month. We do some unit conversions (you could do this by hand to practise, or on Wolframalpha) and get to $3 * 10^3 per month, or $3,000 per month. Most of those who replied got somewhere between $1,000 and $10,000 -- well within an order of magnitude!
Question: How much will the storage of logs cost for a standard, monolithic 100,000 RPS web application?
Answer: First I jotted down the basics and convert them to scientific notation for easy calculation ~1*10^3 bytes/request (1 KB), 9 * 10^4 seconds/day, and 10^5 requests/second. Then multiplied these numbers into storage per day: 10^3 bytes/request * 9 * 10^4 seconds/day * 10^5 requests/second = 9 * 10^12 bytes/day = 9 Tb/day. Then we need to use the monthly cost for disk storage from sirupsen/napkin-math (or your cloud's pricing calculator) -- $0.01 GB/month. So we have 9 Tb/day * $0.01 GB/month. We do some unit conversions (you could do this by hand to practise, or on Wolframalpha) and get to $3 * 10^3 per month, or $3,000 per month. Most of those who replied got somewhere between $1,000 and $10,000 -- well within an order of magnitude!
AS
Problem #2: Your SSD-backed database has a usage-pattern that rewards you with a 80% page-cache hit-rate (i.e. 80% of disk reads are served directly out of memory instead of going to the SSD). The median is 50 distinct disk pages for a query to gather its query results (e.g. InnoDB pages in MySQL). What is the expected average query time from your database?
AS
вот видео с которого всё началось https://www.youtube.com/watch?v=IxkSlnrRFqc
AS
ну и в целом видео подъехали от туда
AS
но чот не вижу их плейлистом
ST
а во https://www.youtube.com/playlist?list=PLbRoZ5Rrl5lerflRWi2mjoxFCJLxC3uAq
@rusdacent ты вроде собираешь такое
@rusdacent ты вроде собираешь такое
теперь еще и азию плейлист смотреть...........
AS
вот этот тот
SH
а во https://www.youtube.com/playlist?list=PLbRoZ5Rrl5lerflRWi2mjoxFCJLxC3uAq
@rusdacent ты вроде собираешь такое
@rusdacent ты вроде собираешь такое
Оно же вроде давно уже
AS
этот вчера