From a36cf065b4460284623dc099b137fa6ebc2f7c64 Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <dbr4@psu.edu>
Date: Wed, 22 Jan 2025 15:47:14 -0500
Subject: Added fixed shard count latency distribution benchmark

---
 CMakeLists.txt                                     |   5 ++
 .../tail-latency/fixed_shard_latency_dist.cpp      | 100 +++++++++++++++++++++
 2 files changed, 105 insertions(+)
 create mode 100644 benchmarks/tail-latency/fixed_shard_latency_dist.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f3cde7..d38623f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -296,6 +296,11 @@ if (tail_bench)
     target_include_directories(fixed_shard_count PRIVATE include external external/m-tree/cpp external/PGM-index/include external/PLEX/include benchmarks/include external/psudb-common/cpp/include)
     target_link_options(fixed_shard_count PUBLIC -mcx16)
 
+    add_executable(fixed_shard_latency_dist ${CMAKE_CURRENT_SOURCE_DIR}/benchmarks/tail-latency/fixed_shard_latency_dist.cpp)
+    target_link_libraries(fixed_shard_latency_dist PUBLIC gsl pthread atomic)
+    target_include_directories(fixed_shard_latency_dist PRIVATE include external external/m-tree/cpp external/PGM-index/include external/PLEX/include benchmarks/include external/psudb-common/cpp/include)
+    target_link_options(fixed_shard_latency_dist PUBLIC -mcx16)
+
     add_executable(btree_insert_dist ${CMAKE_CURRENT_SOURCE_DIR}/benchmarks/tail-latency/btree_insert_dist.cpp)
     target_link_libraries(btree_insert_dist PUBLIC gsl pthread atomic)
     target_include_directories(btree_insert_dist PRIVATE include external external/m-tree/cpp external/PGM-index/include external/PLEX/include benchmarks/include external/psudb-common/cpp/include)
diff --git a/benchmarks/tail-latency/fixed_shard_latency_dist.cpp b/benchmarks/tail-latency/fixed_shard_latency_dist.cpp
new file mode 100644
index 0000000..970009d
--- /dev/null
+++ b/benchmarks/tail-latency/fixed_shard_latency_dist.cpp
@@ -0,0 +1,100 @@
+/*
+ *
+ */
+
+#define ENABLE_TIMER
+#define TS_TEST
+
+#include <thread>
+
+#include "framework/DynamicExtension.h"
+#include "framework/scheduling/FIFOScheduler.h"
+#include "shard/TrieSpline.h"
+#include "query/rangecount.h"
+#include "framework/interface/Record.h"
+#include "file_util.h"
+#include "standard_benchmarks.h"
+
+#include "framework/reconstruction/FixedShardCountPolicy.h"
+
+#include <gsl/gsl_rng.h>
+
+#include "psu-util/timer.h"
+
+
+typedef de::Record<uint64_t, uint64_t> Rec;
+typedef de::TrieSpline<Rec> Shard;
+typedef de::rc::Query<Shard> Q;
+typedef de::DynamicExtension<Shard, Q, de::DeletePolicy::TOMBSTONE, de::FIFOScheduler> Ext;
+typedef Q::Parameters QP;
+
+void usage(char *progname) {
+    fprintf(stderr, "%s reccnt datafile queryfile\n", progname);
+}
+
+int main(int argc, char **argv) {
+
+    if (argc < 4) {
+        usage(argv[0]);
+        exit(EXIT_FAILURE);
+    }
+
+    size_t n = atol(argv[1]);
+    std::string d_fname = std::string(argv[2]);
+    std::string q_fname = std::string(argv[3]);
+
+    
+    auto data = read_sosd_file<Rec>(d_fname, n);
+    auto queries = read_range_queries<QP>(q_fname, .0001);
+
+    std::vector<size_t> shard_counts = {4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 4096*2, 4096*3};
+    size_t buffer_size = 8000;
+
+    for (size_t i=0; i<shard_counts.size(); i++) {
+        auto policy = new de::FixedShardCountPolicy<Shard,Q>(buffer_size, shard_counts[i], n);
+        auto extension = new Ext(policy, buffer_size / 4, buffer_size);
+
+        /* warmup structure w/ 10% of records */
+        size_t warmup = .1 * n;
+        for (size_t j=0; j<warmup; j++) {
+            while (!extension->insert(data[j])) {
+                usleep(1);
+            }
+        }
+
+        extension->await_next_epoch();
+
+        TIMER_INIT();
+
+        for (size_t j=warmup; j<data.size(); j++) {
+            TIMER_START();
+            while (!extension->insert(data[j])) {
+                usleep(1);
+            }
+            TIMER_STOP();
+
+            fprintf(stdout, "I\t%ld\t%ld\n", shard_counts[i], TIMER_RESULT());
+        }
+
+        extension->await_next_epoch();
+        
+        size_t total = 0;
+        /* repeat the queries a bunch of times */
+        for (size_t l=0; l<10; l++) {
+            for (size_t j=0; j<queries.size(); j++) {
+                TIMER_START();
+                auto q = queries[j];
+                auto res = extension->query(std::move(q));
+                total += res.get();
+                TIMER_STOP();
+                fprintf(stdout, "Q\t%ld\t%ld\n", shard_counts[i], TIMER_RESULT());
+            }
+        }
+
+        fprintf(stdout, "S\t%ld\t%ld\t%ld\n", shard_counts[i], extension->get_shard_count(), total);
+        delete extension;
+    }
+
+    fflush(stderr);
+}
+
-- 
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