Hello DAMON community, Three more months have passed since the last DAMON quaterly news letter[0]. Let's look back what happened in the last three months. Highlights of Highlights ======================== - New features. DAMON-based CXL memory tiering patchset has merged[1] into the mainline. - More users. DAMON usages from AWS Aurora Serverless v2 has unveiled[6]. CONFIG_DAMON has enabled[9] on Debian kernels. Six more academic papers that exploring and/or utilizing DAMON has published or archived on OSDI[2,3], ATC[4,5], VLDB[6], and ArXiv[7]. Monthly PyPI downloads of DAMON user-space tool (DAMO) has significantly increase. - Re:org. DAMON github repos have moved[8] from awslabs org to damonitor org. - Conferences: Detailed DAMON usages from products and labs have presented on OSS EU[10] and the VLDB paper[6]. Long-term DAMON plans for kernel that extensible and just works have shared and discussed[11] on LPC. More detailed list of news per each month follows. July 2024 ========= A couple of OSDI'24 papers[2,3] for memory tiering that references and exploring DAMON as a part of them are published. ATC'24 also published two DAMON-citing papers at the same time. The first one[4] proposes a way to improve monitoring accuracy of DAMON, while the second one[5] mentions DAMON can be useful for extensible memory management. VLDB paper about Aurora Serverless V2, which reveals their usage of DAMON on the product, is uploaded[6]. Memory Management subsystem pull request for Linux v6.11-rc1 with DAMON changes for CXL memory tiering has merged[1]. August 2024 =========== GitHub repos for non-kernel parts of DAMON project including 'damo', 'damon-tests' and 'damoos' have announced[8] to be moved from awslabs org to damonitor org. As of this writing, the reorganization is completed. September 2024 ============== CONFIG_DAMON is enabled[9] on Debian kernels. An academic paper preprint that optimizes THP using DAMON and BPF has uploaded[7] to ArXiv. DAMON usages from labs and real-world products for profiling-guided optimizations, proactive reclamation (Auroa Serverless v2), and CXL memory tiering (SK hynix HMSDK) have shared[10] on Linux Conference at OSSummit EU'24. DAMON long-term plans for making kernel extensible and just works have shared and discussed on Kernel Memory Management Micro-Conference[11] at LPC'24. Monthly PyPI downloads of DAMON user-space tool (DAMO) surpassed 4,000. It took about 7 months since the record of 2,000 (2024-02), which took about 18 months from the beginning. The speed is apparently growing. Previous quaterly news letters ============================== - 2024 Q2: https://lore.kernel.org/20240701212244.52288-1-sj@xxxxxxxxxx - 2024 Q1: https://lore.kernel.org/20240402191224.92305-1-sj@xxxxxxxxxx More Past DAMON News ==================== If you're interested in a humblie list of more DAMON events that happened in past and curated by DAMON maintainer, please reach out to the project site's news page [12]. References ========== [0] "DAMON Quaterly News Letter (2024 Q3)", https://lore.kernel.org/20240701212244.52288-1-sj@xxxxxxxxxx [1] "MM updates for 6.11-rc1", https://lore.kernel.org/20240721145415.fbeb01a853962ef91334f3d1@xxxxxxxxxxxxxxxxxxxx [2] "Nomad: Non-Exclusive Memory Tiering via Transactional Page Migration", https://www.usenix.org/conference/osdi24/presentation/xiang [3] "Managing Memory Tiers with CXL in Virtualized Environments", https://www.usenix.org/conference/osdi24/presentation/zhong-yuhong [4] "Telescope: Telemetry for Gargantuan Memory Footprint Applications", https://www.usenix.org/conference/atc24/presentation/nair [5] "FBMM: Making Memory Management Extensible With Filesystems", https://www.usenix.org/conference/atc24/presentation/tabatabai [6] "Resource management in Aurora Serverless", https://www.amazon.science/publications/resource-management-in-aurora-serverless [7] "eBPF-mm: Userspace-guided memory management in Linux with eBPF", https://arxiv.org/pdf/2409.11220 [8] https://lore.kernel.org/all/20240813232158.83903-1-sj@xxxxxxxxxx/ [9] https://salsa.debian.org/kernel-team/linux/-/merge_requests/1172 [10] "DAMON Recipes: Ways to Save Memory Using a Linux Kernel Subsystem in the Real World", https://sched.co/1ej2S [11] "DAMON: Long-term Plans for Kernel That {Just Works,Extensible}", https://lpc.events/event/18/contributions/1768/ [12] https://sjp38.github.io/post/damon_news/ Wrapup ====== So, those were yet another grateful three months. Looking forward to get more news! If you have any question regarding DAMON, please feel free to reach out to the community and/or me. Thanks, SJ
