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Perforator: новая система непрерывного профилирования теперь в опенсорсе

В GitHub-репозитории доступен исходный код системы и инфраструктура для развёртывания своей инсталляции Perforator на кластере Kubernetes. Кроме того, Perforator можно использовать на своём компьютере как более простую замену perf record: профили получаются точнее, а оверхед меньше. Исходный код доступен под лицензией MIT и запускается под x86-64 Linux.

Поговорим про профилирование под Linux, посмотрим на вызовы и сложности, возникающие при профилировании, изучим, как устроен Perforator внутри, и обсудим, как можно использовать полученную систему.



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Perforator: новая система непрерывного профилирования теперь в опенсорсе

В GitHub-репозитории доступен исходный код системы и инфраструктура для развёртывания своей инсталляции Perforator на кластере Kubernetes. Кроме того, Perforator можно использовать на своём компьютере как более простую замену perf record: профили получаются точнее, а оверхед меньше. Исходный код доступен под лицензией MIT и запускается под x86-64 Linux.

Поговорим про профилирование под Linux, посмотрим на вызовы и сложности, возникающие при профилировании, изучим, как устроен Perforator внутри, и обсудим, как можно использовать полученную систему.

BY Хабр




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Stocks dropped on Friday afternoon, as gains made earlier in the day on hopes for diplomatic progress between Russia and Ukraine turned to losses. Technology stocks were hit particularly hard by higher bond yields. The Security Service of Ukraine said in a tweet that it was able to effectively target Russian convoys near Kyiv because of messages sent to an official Telegram bot account called "STOP Russian War." And indeed, volatility has been a hallmark of the market environment so far in 2022, with the S&P 500 still down more than 10% for the year-to-date after first sliding into a correction last month. The CBOE Volatility Index, or VIX, has held at a lofty level of more than 30. At the start of 2018, the company attempted to launch an Initial Coin Offering (ICO) which would enable it to enable payments (and earn the cash that comes from doing so). The initial signals were promising, especially given Telegram’s user base is already fairly crypto-savvy. It raised an initial tranche of cash – worth more than a billion dollars – to help develop the coin before opening sales to the public. Unfortunately, third-party sales of coins bought in those initial fundraising rounds raised the ire of the SEC, which brought the hammer down on the whole operation. In 2020, officials ordered Telegram to pay a fine of $18.5 million and hand back much of the cash that it had raised. Right now the digital security needs of Russians and Ukrainians are very different, and they lead to very different caveats about how to mitigate the risks associated with using Telegram. For Ukrainians in Ukraine, whose physical safety is at risk because they are in a war zone, digital security is probably not their highest priority. They may value access to news and communication with their loved ones over making sure that all of their communications are encrypted in such a manner that they are indecipherable to Telegram, its employees, or governments with court orders.
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