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ReStore in Action
Workload
1 (Balanced)
2 (Read-heavy)
3 (Write-heavy)
4 (Skewed)
5 (Uniform)
6 (Dynamic)
# Op.
Read %
% Pages
% Access
Top Tier
Optane SSD
PCI SSD
SATA SSD
Read Latency (μs)
Concurrency
Asymmetry
Mid Tier
Optane SSD
PCI SSD
SATA SSD
Read Latency (μs)
Concurrency
Asymmetry
Bottom Tier
Optane SSD
PCI SSD
SATA SSD
Read Latency (μs)
Concurrency
Asymmetry
Capacity Ratios
Top: 6%, Mid: 9%
Top: 10%, Mid: 20%
Top: 12%, Mid: 16%
Custom
Top Tier (%)
Mid Tier (%)
Bottom Tier (%)
Selected Algorithms:
tLRU
tLFU
LRFU
EXD
TEMP
ReStore
PLAY
Fast
Medium
Slow
Finish
Progress
0%
Op. #
0
:
Read/Write from/to Page ??
Read
Write
Swap due to Migration
Cold
Hot
tLRU
tLFU
TEMP
ReStore
Tier 1
Tier 2
Tier 3
Performance Metrics
tLRU
tLFU
TEMP
ReStore
Tier 1 # Writes
0
0
0
0
Tier 2 # Writes
0
0
0
0
Tier 3 # Writes
0
0
0
0
Tier 1 # Reads
0
0
0
0
Tier 2 # Reads
0
0
0
0
Tier 3 # Reads
0
0
0
0
Tier 1 ↔ 2 #Migrations
0
0
0
0
Tier 2 ↔ 3 #Migrations
0
0
0
0