International journal of advanced smart convergence

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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Implementing I/O Bandwidth Sharing Scheme between Multiple Linux Containers based on Dm-zoned for Zoned Namespace SSDs

  • Seokjun Lee (School of Computer Science and Engineering, Pusan National University) ;
  • Sungyong Ahn (School of Computer Science and Engineering, Pusan National University)
  • Received : 2023.10.23
  • Accepted : 2023.11.04
  • Published : 2023.12.31
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Abstract

In the cloud service, system resource such as CPU, memory, I/O bandwidth are shared among multiple users. Particularly, in Linux containers environment, I/O bandwidth is distributed in proportion to the weight of each container through the BFQ I/O scheduler. However, since the I/O scheduler can only be applied to conventional block storage devices, it cannot be applied to Zoned Namespace(ZNS) SSD, a new storage interface that has been recently studied. To overcome this limitation, in this paper, we implemented a weighted proportional I/O bandwidth sharing scheme for ZNS SSDs in dm-zoned, which emulates conventional block storage using ZNS SSDs. Each user receives a different amount of budget, which is required to process the user's I/O requests based on the user's weight. If the budget is exhausted I/O requests cannot be processed and requests are queued until the budget replenished. Each budget refill period, the budget is replenished based on the user's weight. In the experiment, as a result, we can confirm that the I/O bandwidth can be distributed on their weight as we expected.

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Acknowledgement

This research was supported by the MSIT(Ministry of Science and ICT), Korea, under the Convergence security core talent training business(Pusan National University) support program(IITP-2023-2022-0-01201) supervised by the IITP(Institute for Information & Communications Technology Planning & Evaluation). This research was supported by the MSIT(Ministry of Science and ICT), Korea, under the ITRC(Information Technology Research Center) support program(IITP-2023-2020-0-01797) supervised by the IITP(Institute for Information & Communications Technology Planning & Evaluation)

References

  1. Cgroup, [Online] Available: https://www.kernel.org/doc/Documentation/group-v1/cgroups.txt ,2018.
  2. BFQ Scheduler, [Online] Available: https://www.kernel.org/doc/Documentation/block/bfq-iosched.txt
  3. Zoned Namespaces (ZNS) SSDs, [Online] Available: https:// zonedstorage.io/introduction/zns/.
  4. dm-zoned-tools, [Online] Available: https://github.com/westerndigitalcorporation/dm-zoned-tools.
  5. S. Ahn, K. La., and J. Kim, "Improving I/O Resource Sharing of Linux Cgroup for NVMe SSDs on Multi-core Systems," 8th USENIX Workshop on Hot Topics in Storage and File Systems(HotStorage 16). pp. 111-115, 2016. DOI: https://dl.acm.org/doi/10.5555/3026852.3026875
  6. H. Li, et. al., "The case of FEMU: cheap, accurate, scalable and extensible flash emulator," 16th USENIX Conference on File and Storage Technologies (FAST 18), pp. 83-90, 2018. DOI: https://dl.acm.org/doi/10.5555/3189759.3189767
  7. J. Axboe, "Flexible I/O tester,", [Online] Available: https:/ /github.com/axboe/fio
  8. UMASS trace, [Online] Available: https://traces.cs.umass.edu/
  9. R. K. Jain, et al. "A quantitative measure of fairness and discrimination," Eastern Research Laboratory, Digital Equipment Corporation, 1984. DOI: https://doi.org/10.48550/arXiv.cs/9809099
  10. trace-replay, [Online] Available: https://github.com/yongseokoh/trace-replay