fix(simulation): correct exponential sampling and cache behavior logic

- Fixed incorrect use of exponential sampling for `next_request` and `next_refresh` timings. - Adjusted cache eviction logic to properly handle capacity checks. - Improved simulation output and logging for least accessed objects. - Corrected CSV export to include index labels for better data clarity. - Reran experiments Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>
2024-11-28 11:19:04 +01:00
parent dea6004160
commit 09b943e41d
41 changed files with 1828 additions and 1435 deletions
--- a/aoi_cache_experiment_eval.ipynb
+++ b/aoi_cache_experiment_eval.ipynb
--- a/aoi_cache_simulation.ipynb
+++ b/aoi_cache_simulation.ipynb
--- a/experiments/No_Refresh_0_5s_ttl/details.csv
+++ b/experiments/No_Refresh_0_5s_ttl/details.csv
@@ -1,100 +1,100 @@
-,access_count,hits,misses,mu,lambda,hit_rate,avg_age
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--- a/experiments/No_Refresh_0_5s_ttl/hit_age.csv
+++ b/experiments/No_Refresh_0_5s_ttl/hit_age.csv
@@ -1,101 +1,101 @@
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--- a/experiments/No_Refresh_0_5s_ttl/lambda_distribution.pdf
+++ b/experiments/No_Refresh_0_5s_ttl/lambda_distribution.pdf
--- a/experiments/No_Refresh_0_5s_ttl/lambda_vs_access_count.pdf
+++ b/experiments/No_Refresh_0_5s_ttl/lambda_vs_access_count.pdf
--- a/experiments/No_Refresh_0_5s_ttl/objects_in_cache_over_time.pdf
+++ b/experiments/No_Refresh_0_5s_ttl/objects_in_cache_over_time.pdf
--- a/experiments/No_Refresh_0_5s_ttl/overall_hit_age.csv
+++ b/experiments/No_Refresh_0_5s_ttl/overall_hit_age.csv
@@ -1,9 +1,9 @@
 ,hit_rate,avg_age
 count,100.0,100.0
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-max,0.375,0.3870967741935484
+max,0.9713572617066794,0.4423076923076923
--- a/experiments/No_Refresh_1_0s_ttl/details.csv
+++ b/experiments/No_Refresh_1_0s_ttl/details.csv
@@ -1,100 +1,100 @@
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+99,482,382,100,0,4,68.27,0.5026178010471204
--- a/experiments/No_Refresh_1_0s_ttl/hit_age.csv
+++ b/experiments/No_Refresh_1_0s_ttl/hit_age.csv
@@ -1,101 +1,101 @@
 obj_id,hit_rate,avg_age
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--- a/experiments/No_Refresh_1_0s_ttl/lambda_distribution.pdf
+++ b/experiments/No_Refresh_1_0s_ttl/lambda_distribution.pdf
--- a/experiments/No_Refresh_1_0s_ttl/lambda_vs_access_count.pdf
+++ b/experiments/No_Refresh_1_0s_ttl/lambda_vs_access_count.pdf
--- a/experiments/No_Refresh_1_0s_ttl/objects_in_cache_over_time.pdf
+++ b/experiments/No_Refresh_1_0s_ttl/objects_in_cache_over_time.pdf
--- a/experiments/No_Refresh_1_0s_ttl/overall_hit_age.csv
+++ b/experiments/No_Refresh_1_0s_ttl/overall_hit_age.csv
@@ -1,9 +1,9 @@
 ,hit_rate,avg_age
 count,100.0,100.0
-mean,0.3881665606779017,0.4920888885617573
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-min,0.0,0.0
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-max,0.5375,1.0
+max,0.9855003565486095,0.6515151515151515
--- a/experiments/No_Refresh_2_0s_ttl/details.csv
+++ b/experiments/No_Refresh_2_0s_ttl/details.csv
@@ -1,100 +1,100 @@
-,access_count,hits,misses,mu,lambda,hit_rate,avg_age
+obj_id,access_count,hits,misses,mu,lambda,hit_rate,avg_age
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--- a/experiments/No_Refresh_2_0s_ttl/hit_age.csv
+++ b/experiments/No_Refresh_2_0s_ttl/hit_age.csv
@@ -1,101 +1,101 @@
 obj_id,hit_rate,avg_age
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--- a/experiments/No_Refresh_2_0s_ttl/lambda_distribution.pdf
+++ b/experiments/No_Refresh_2_0s_ttl/lambda_distribution.pdf
--- a/experiments/No_Refresh_2_0s_ttl/lambda_vs_access_count.pdf
+++ b/experiments/No_Refresh_2_0s_ttl/lambda_vs_access_count.pdf
--- a/experiments/No_Refresh_2_0s_ttl/objects_in_cache_over_time.pdf
+++ b/experiments/No_Refresh_2_0s_ttl/objects_in_cache_over_time.pdf
--- a/experiments/No_Refresh_2_0s_ttl/overall_hit_age.csv
+++ b/experiments/No_Refresh_2_0s_ttl/overall_hit_age.csv
@@ -1,9 +1,9 @@
 ,hit_rate,avg_age
 count,100.0,100.0
-mean,0.5381173912695726,0.966399936751214
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+max,0.9926313287378179,1.2043010752688172
--- a/experiments/No_Refresh_3_0s_ttl/details.csv
+++ b/experiments/No_Refresh_3_0s_ttl/details.csv
@@ -1,100 +1,100 @@
-,access_count,hits,misses,mu,lambda,hit_rate,avg_age
+obj_id,access_count,hits,misses,mu,lambda,hit_rate,avg_age
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--- a/experiments/No_Refresh_3_0s_ttl/hit_age.csv
+++ b/experiments/No_Refresh_3_0s_ttl/hit_age.csv
@@ -1,101 +1,101 @@
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--- a/experiments/No_Refresh_3_0s_ttl/lambda_distribution.pdf
+++ b/experiments/No_Refresh_3_0s_ttl/lambda_distribution.pdf
--- a/experiments/No_Refresh_3_0s_ttl/lambda_vs_access_count.pdf
+++ b/experiments/No_Refresh_3_0s_ttl/lambda_vs_access_count.pdf
--- a/experiments/No_Refresh_3_0s_ttl/objects_in_cache_over_time.pdf
+++ b/experiments/No_Refresh_3_0s_ttl/objects_in_cache_over_time.pdf
--- a/experiments/No_Refresh_3_0s_ttl/overall_hit_age.csv
+++ b/experiments/No_Refresh_3_0s_ttl/overall_hit_age.csv
@@ -1,9 +1,9 @@
 ,hit_rate,avg_age
 count,100.0,100.0
-mean,0.6224679450442043,1.4900421658850633
+mean,0.8151181771596068,1.486159537458237
-std,0.18900729549961315,0.2559552015594171
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-max,0.7665260196905767,3.0
+max,0.9951271690040409,1.7263157894736842
--- a/experiments/No_Refresh_4_0s_ttl/details.csv
+++ b/experiments/No_Refresh_4_0s_ttl/details.csv
@@ -1,100 +1,100 @@
-,access_count,hits,misses,mu,lambda,hit_rate,avg_age
+obj_id,access_count,hits,misses,mu,lambda,hit_rate,avg_age
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--- a/experiments/No_Refresh_4_0s_ttl/hit_age.csv
+++ b/experiments/No_Refresh_4_0s_ttl/hit_age.csv
@@ -1,101 +1,101 @@
 obj_id,hit_rate,avg_age
-1,0.7936746987951807,1.9316888045540797
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--- a/experiments/No_Refresh_4_0s_ttl/lambda_distribution.pdf
+++ b/experiments/No_Refresh_4_0s_ttl/lambda_distribution.pdf
--- a/experiments/No_Refresh_4_0s_ttl/lambda_vs_access_count.pdf
+++ b/experiments/No_Refresh_4_0s_ttl/lambda_vs_access_count.pdf
--- a/experiments/No_Refresh_4_0s_ttl/objects_in_cache_over_time.pdf
+++ b/experiments/No_Refresh_4_0s_ttl/objects_in_cache_over_time.pdf
--- a/experiments/No_Refresh_4_0s_ttl/overall_hit_age.csv
+++ b/experiments/No_Refresh_4_0s_ttl/overall_hit_age.csv
@@ -1,9 +1,9 @@
 ,hit_rate,avg_age
 count,100.0,100.0
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+max,0.996315664368909,2.2888888888888888
--- a/experiments/No_Refresh_5_0s_ttl/details.csv
+++ b/experiments/No_Refresh_5_0s_ttl/details.csv
@@ -1,100 +1,100 @@
-,access_count,hits,misses,mu,lambda,hit_rate,avg_age
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--- a/experiments/No_Refresh_5_0s_ttl/hit_age.csv
+++ b/experiments/No_Refresh_5_0s_ttl/hit_age.csv
@@ -1,101 +1,101 @@
 obj_id,hit_rate,avg_age
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-100,0.7062314540059347,2.3529411764705883
+100,0.9076305220883534,2.4911504424778763
--- a/experiments/No_Refresh_5_0s_ttl/lambda_distribution.pdf
+++ b/experiments/No_Refresh_5_0s_ttl/lambda_distribution.pdf
--- a/experiments/No_Refresh_5_0s_ttl/lambda_vs_access_count.pdf
+++ b/experiments/No_Refresh_5_0s_ttl/lambda_vs_access_count.pdf
--- a/experiments/No_Refresh_5_0s_ttl/objects_in_cache_over_time.pdf
+++ b/experiments/No_Refresh_5_0s_ttl/objects_in_cache_over_time.pdf
--- a/experiments/No_Refresh_5_0s_ttl/overall_hit_age.csv
+++ b/experiments/No_Refresh_5_0s_ttl/overall_hit_age.csv
@@ -1,9 +1,9 @@
 ,hit_rate,avg_age
 count,100.0,100.0
-mean,0.7175225869007572,2.4791552890507336
+mean,0.877309770620863,2.4590330715633857
-std,0.1841955218651161,0.35131346514105605
+std,0.056767395895691936,0.1482726930083797
-min,0.0,0.0
+min,0.8,2.148647037787579
-25%,0.6933831217326363,2.4321113930546847
+25%,0.8330152671755726,2.3542028879412893
-50%,0.8266900030111413,2.503781989168563
+50%,0.8487028558971006,2.4628401814300958
-75%,0.8338765555190953,2.573372952474587
+75%,0.9138257575757576,2.5551416442865804
-max,0.8466757123473542,3.4
+max,0.9970287615878298,2.981981981981982
--- a/experiments/README.md
+++ b/experiments/README.md
@@ -6,6 +6,8 @@ Explanation for files in each experiment:
 - `hit_age.csv`: Shows hit rate/average age at time of request for each object.
 - `lambda_distribution.pdf`: Lambda Distribution across all objects/discrete
  values of the Zipf distribution
 - `lambda_vs_access_count.pdf`: Displays the access count against lambda,
  expecting a higher lambda to result in a higher access count.
 - `objects_in_cache_over_time.pdf`: Amount of cache entries at given time.
 - `overall_hit_age.csv`: Cumulative description of `hit_age.csv`
--- a/experiments/hr_and_age_vs_ttl.png
+++ b/experiments/hr_and_age_vs_ttl.png
--- a/temp.csv
+++ b/temp.csv
@@ -0,0 +1,100 @@
 obj_id,lambda,access_count
 1,1,12
 2,3,49
 3,1,15
 4,1,20
 5,2,36
 6,1,16
 7,5,72
 8,1,17
 9,1,14
 10,1,16
 11,2,37
 12,1,17
 13,1,18
 14,1,16
 15,2,33
 16,2,39
 17,1,21
 18,1,17
 19,3,65
 20,1,19
 21,1,20
 22,1,18
 23,1,19
 24,2,34
 25,1,20
 26,1,24
 27,1,22
 28,5,78
 29,1,23
 30,1,18
 31,1,17
 32,4,64
 33,1,15
 34,4,62
 35,1,24
 36,1,10
 37,1,17
 38,3,49
 39,8,147
 40,1,13
 41,4,68
 42,4,65
 43,2,42
 44,1,12
 45,1,16
 46,1,14
 47,10,164
 48,1,20
 49,1,18
 50,1,20
 51,5,90
 52,9,156
 53,1,14
 54,1,13
 55,1,16
 56,1,21
 57,1,16
 58,17,293
 59,2,30
 60,1,20
 61,26,428
 62,1,20
 63,1,14
 64,2,29
 65,1,16
 66,10,172
 67,1,20
 68,69,1190
 69,1,21
 70,1,18
 71,2,24
 72,1,13
 73,1,22
 74,1,17
 75,3,48
 76,2,36
 77,2,31
 78,3,58
 79,15,298
 80,1,12
 81,1,15
 82,5,85
 83,2,30
 84,1,16
 85,1,15
 86,2,24
 87,1,21
 88,2,29
 89,1,26
 90,1,15
 91,2,28
 92,2,20
 93,3,47
 94,1,20
 95,2,41
 96,1,21
 97,1,23
 98,37,632
 99,4,71