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From: Rik van Riel To: Chris Li , Johannes Weiner Cc: Kairui Song , Nhat Pham , Michal Hocko , Roman Gushchin , Shakeel Butt , Yosry Ahmed , David Hildenbrand , Muchun Song , Kemeng Shi , Baoquan He , Barry Song , YoungJun Park , Chengming Zhou , "Lorenzo Stoakes (Oracle)" , "Liam R. Howlett" , "Vlastimil Babka (SUSE)" , Mike Rapoport , Suren =?UTF-8?Q?Baghdasaryan=EF=BF=BC?= , Qi Zheng , Axel Rasmussen , Yuanchu Xie , Wei Xu , Gregory Price , Wenchao Hao , Jonathan Corbet , Hugh Dickins , Baolin Wang , Tejun Heo , Michal =?ISO-8859-1?Q?Koutn=FD?= , Shuah Khan , Kunwu Chan , Meta kernel team , Linux Memory Management List , Linux Kernel Mailing List , linux-doc@vger.kernel.org, "open list:CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)" , Andrew Morton , Joshua Hahn Date: Sat, 19 Sep 2026 21:06:48 -0400 In-Reply-To: References: Autocrypt: addr=riel@surriel.com; prefer-encrypt=mutual; keydata=mQENBFIt3aUBCADCK0LicyCYyMa0E1lodCDUBf6G+6C5UXKG1jEYwQu49cc/gUBTTk33A eo2hjn4JinVaPF3zfZprnKMEGGv4dHvEOCPWiNhlz5RtqH3SKJllq2dpeMS9RqbMvDA36rlJIIo47 Z/nl6IA8MDhSqyqdnTY8z7LnQHqq16jAqwo7Ll9qALXz4yG1ZdSCmo80VPetBZZPw7WMjo+1hByv/ lvdFnLfiQ52tayuuC1r9x2qZ/SYWd2M4p/f5CLmvG9UcnkbYFsKWz8bwOBWKg1PQcaYHLx06sHGdY dIDaeVvkIfMFwAprSo5EFU+aes2VB2ZjugOTbkkW2aPSWTRsBhPHhV6dABEBAAG0HlJpayB2YW4gU mllbCA8cmllbEByZWRoYXQuY29tPokBHwQwAQIACQUCW5LcVgIdIAAKCRDOed6ShMTeg05SB/986o gEgdq4byrtaBQKFg5LWfd8e+h+QzLOg/T8mSS3dJzFXe5JBOfvYg7Bj47xXi9I5sM+I9Lu9+1XVb/ r2rGJrU1DwA09TnmyFtK76bgMF0sBEh1ECILYNQTEIemzNFwOWLZZlEhZFRJsZyX+mtEp/WQIygHV WjwuP69VJw+fPQvLOGn4j8W9QXuvhha7u1QJ7mYx4dLGHrZlHdwDsqpvWsW+3rsIqs1BBe5/Itz9o 6y9gLNtQzwmSDioV8KhF85VmYInslhv5tUtMEppfdTLyX4SUKh8ftNIVmH9mXyRCZclSoa6IMd635 Jq1Pj2/Lp64tOzSvN5Y9zaiCc5FucXtB9SaWsgdmFuIFJpZWwgPHJpZWxAc3VycmllbC5jb20+iQE +BBMBAgAoBQJSLd2lAhsjBQkSzAMABgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRDOed6ShMTe g4PpB/0ZivKYFt0LaB22ssWUrBoeNWCP1NY/lkq2QbPhR3agLB7ZXI97PF2z/5QD9Fuy/FD/jddPx KRTvFCtHcEzTOcFjBmf52uqgt3U40H9GM++0IM0yHusd9EzlaWsbp09vsAV2DwdqS69x9RPbvE/Ne fO5subhocH76okcF/aQiQ+oj2j6LJZGBJBVigOHg+4zyzdDgKM+jp0bvDI51KQ4XfxV593OhvkS3z 3FPx0CE7l62WhWrieHyBblqvkTYgJ6dq4bsYpqxxGJOkQ47WpEUx6onH+rImWmPJbSYGhwBzTo0Mm G1Nb1qGPG+mTrSmJjDRxrwf1zjmYqQreWVSFEt26tBpSaWsgdmFuIFJpZWwgPHJpZWxAZmIuY29tP okBPgQTAQIAKAUCW5LbiAIbIwUJEswDAAYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQznneko TE3oOUEQgAsrGxjTC1bGtZyuvyQPcXclap11Ogib6rQywGYu6/Mnkbd6hbyY3wpdyQii/cas2S44N cQj8HkGv91JLVE24/Wt0gITPCH3rLVJJDGQxprHTVDs1t1RAbsbp0XTksZPCNWDGYIBo2aHDwErhI omYQ0Xluo1WBtH/UmHgirHvclsou1Ks9jyTxiPyUKRfae7GNOFiX99+ZlB27P3t8CjtSO831Ij0Ip QrfooZ21YVlUKw0Wy6Ll8EyefyrEYSh8KTm8dQj4O7xxvdg865TLeLpho5PwDRF+/mR3qi8CdGbkE c4pYZQO8UDXUN4S+pe0aTeTqlYw8rRHWF9TnvtpcNzZw== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.60.2 (3.60.2-1.fc44) MIME-Version: 1.0 X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 5FFF720005 X-Stat-Signature: 8jfuepuyynw7bex7rcbca8udxwsnutpk X-Rspam-User: X-HE-Tag: 1789866464-601711 X-HE-Meta: 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 hekpQSdA AjjJ6z9E5kkl6W1EBpHjkoqDjHjTcSi3Ss11uFeitkXnw5wbD4G/4tC0RB0U5VSaSKd8VpKXTpGkqEeKFnOAqrOgpBHG6HxPanJZeRaV5bCCbRK1oVxPwf3XXL6tKkCvl9mIphtL4fUbe82tYWgF+hIqVZ/50NMM92VTpfudm3WqZ6I1wByl1s5lrScmNLue3VDgWwsu8CFRtgYtIlwm+u04ThQV3av74x6utiDEqG39csDPSpN/fHDhYLuglTgQFnftIGVxK46US6L95frIt3TxAIzqYrZnzEg8tMzP6QDgAamu7mDSO1HPKkIEX8ICjg4DAadGbZ+b0rGhsvvkI8+k16915xG7hIDTkB+ZaBe6k1SoXBOa8/jHr0XrE1KeC2pIkmkD+4lAFo+WzvkB8SQ9VnQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: >=20 > For our deployment, we only compress about 7-10% of the system memory > before performance starts to suffer. The feedback loop will scale it > back. I am very curious do you have actual work load to swap out 100% > of the RAM. One common workload is a web browser with idle tabs. Those often compress pretty well, a ratio of 4:1 is not unheard of, which makes it easy to fill up 1/3 of memory with 133% of memory's worth of compressed memory. --=20 All Rights Reversed.