After a memcached restart Magma's performance is 15-20% higher in a read only YCSB C workload at 1% dgm. This degrades over time and stabilises in about an hour. This is mostly caused by je_malloc fragmentation building up.
We have to investigate and confirm the cause. Also see if it can be mitigated for low dgm zipfian usecases where we have a 50% cache hit ratio and small changes in memory usage can cause large deviations in throughput.
|Field||Original Value||New Value|
|Assignee||John Liang [ jliang ]||Apaar Gupta [ apaar.gupta ]|
|Epic Link||CBSS-717 [ 185312 ]|
|Sprint||Magma 2021-Sep-20 [ 1789 ]|
|Sprint||Magma May 2022 [ 1789 ]||Magma May 2022, Magma May 2023 [ 1789, 2131 ]|
|Sprint||Magma May 2022, Magma May 16 2023 [ 1789, 2131 ]||Magma May 2022 [ 1789 ]|