On Fri, 14 Jun 2024 12:00:02 +0900 Honggyu Kim <honggyu.kim@xxxxxx> wrote: > There was an RFC IDEA "DAMOS-based Tiered-Memory Management" previously > posted at [1]. > > It says there is no implementation of the demote/promote DAMOS action > are made. This patch series is about its implementation for physical > address space so that this scheme can be applied in system wide level. > > Changes from v5: > https://lore.kernel.org/20240613132056.608-1-honggyu.kim@xxxxxx > 1. Remove new actions in usage document as its for debugfs Thank you, I confirmed this and gave you my Reviewed-by: tag. > 2. Apply minor fixes on cover letter But... [...] > 2. YCSB zipfian distribution read only workload (with demotion_enabled true) > memory pressure with cold memory on node0 with 512GB of local DRAM. > ====================+================================================+========= > | cold memory occupied by mmap and memset | > | 0G 440G 450G 460G 470G 480G 490G 500G | > ====================+================================================+========= > Execution time normalized to DRAM-only values | GEOMEAN > --------------------+------------------------------------------------+--------- > DAMON tiered | - 1.03 1.03 1.03 1.03 1.03 1.07 1.05 | 1.04 > DAMON lazy | - 1.04 1.03 1.04 1.05 1.06 1.06 1.06 | 1.05 > DAMON tiered kswapd | - 1.03 1.03 1.03 1.03 1.02 1.02 1.03 | 1.03 > DAMON lazy kswapd | - 1.04 1.04 1.04 1.03 1.05 1.04 1.05 | 1.04 > ====================+================================================+========= > CXL usage of redis-server in GB | AVERAGE > --------------------+------------------------------------------------+--------- > DAMON tiered | - 0.6 0.5 0.4 0.7 0.8 7.1 5.6 | 2.2 > DAMON lazy | - 0.5 3.0 4.5 5.4 6.4 9.4 9.1 | 5.5 > DAMON tiered kswapd | - 0.0 0.0 0.4 0.5 0.1 0.8 1.0 | 0.4 > DAMON lazy kswapd | - 4.2 4.6 5.3 1.7 6.8 8.1 5.8 | 5.2 > ====================+================================================+========= > > Each test result is based on the exeuction environment as follows. Seems the typo is not fixed? I don't want to delay this work for such trivial thing, though. For the patch series, Acked-by: SeongJae Park <sj@xxxxxxxxxx> Thanks, SJ [...]
