1 files changed, 128 insertions, 0 deletions
diff --git a/benchmarks/vldb/thread_scaling_bench.cpp b/benchmarks/vldb/thread_scaling_bench.cpp
new file mode 100644
index 0000000..b679e92
--- /dev/null
+++ b/benchmarks/vldb/thread_scaling_bench.cpp
@@ -0,0 +1,128 @@
+/*
+ *
+ */
+
+#define ENABLE_TIMER
+
+#include <thread>
+
+#include "framework/DynamicExtension.h"
+#include "shard/ISAMTree.h"
+#include "query/irs.h"
+#include "framework/interface/Record.h"
+#include "file_util.h"
+#include <ctime>
+
+#include <gsl/gsl_rng.h>
+
+#include "psu-util/timer.h"
+
+
+typedef de::Record<int64_t, int64_t> Rec;
+typedef de::ISAMTree<Rec> ISAM;
+typedef de::irs::Query<Rec, ISAM> Q;
+typedef de::DynamicExtension<Rec, ISAM, Q> Ext;
+typedef de::irs::Parms<Rec> QP;
+
+std::atomic<bool> inserts_done = false;
+
+struct timespec delay = {0, 500};
+
+void query_thread(Ext *extension, std::vector<QP> *queries) {
+    gsl_rng *rng = gsl_rng_alloc(gsl_rng_mt19937);
+    size_t total = 0;
+
+    while (!inserts_done.load()) {
+        auto q_idx = gsl_rng_uniform_int(rng, queries->size());
+
+        auto q = (*queries)[q_idx];
+        q.rng = rng;
+        q.sample_size = 1000;
+
+        auto res = extension->query(&q);
+        auto r = res.get();
+        total += r.size();
+        nanosleep(&delay, nullptr);
+    }
+
+    fprintf(stderr, "%ld\n", total);
+
+    gsl_rng_free(rng);
+}
+
+void insert_thread(Ext *extension, size_t start, size_t stop, std::vector<Rec> *records) {
+    fprintf(stderr, "%ld\t%ld\n", start, stop);
+    for (size_t i=start; i<stop; i++) {
+        while (!extension->insert((*records)[i])) {
+            nanosleep(&delay, nullptr);
+        }
+    }
+}
+
+int main(int argc, char **argv) {
+
+    if (argc < 6) {
+        fprintf(stderr, "Usage:\n");
+        fprintf(stderr, "%s reccnt insert_threads query_threads datafile queryfile\n", argv[0]);
+        exit(EXIT_FAILURE);
+    }
+
+    size_t n = atol(argv[1]);
+    size_t ithread_cnt = atol(argv[2]);
+    size_t qthread_cnt = atol(argv[3]);
+    std::string d_fname = std::string(argv[4]);
+    std::string q_fname = std::string(argv[5]);
+
+    auto extension = new Ext(1000, 12000, 8, 0, 64);
+    gsl_rng * rng = gsl_rng_alloc(gsl_rng_mt19937);
+    
+    auto data = read_sosd_file<Rec>(d_fname, n);
+    auto queries = read_range_queries<QP>(q_fname, .001);
+
+    /* warmup structure w/ 10% of records */
+    size_t warmup = .1 * n;
+    for (size_t i=0; i<warmup; i++) {
+        while (!extension->insert(data[i])) {
+            usleep(1);
+        }
+    }
+
+    extension->await_next_epoch();
+
+    TIMER_INIT();
+
+    std::vector<std::thread> ithreads(ithread_cnt);
+    std::vector<std::thread> qthreads(qthread_cnt);
+
+    TIMER_START();
+    size_t start = warmup;
+    size_t per_thread = (n - warmup) / ithread_cnt;
+    for (size_t i=0; i<ithread_cnt; i++) {
+        ithreads[i] = std::thread(insert_thread, extension, start, start + per_thread, &data);
+        start += per_thread;
+    }
+
+    for (size_t i=0; i<qthread_cnt; i++) {
+        qthreads[i] = std::thread(query_thread, extension, &queries);
+    }
+
+    for (size_t i=0; i<ithread_cnt; i++) {
+        ithreads[i].join();
+    }
+
+    inserts_done.store(true);
+    TIMER_STOP();
+
+    for (size_t i=0; i<qthread_cnt; i++) {
+        qthreads[i].join();
+    }
+
+    auto total_latency = TIMER_RESULT();
+    size_t throughput = (size_t) ((double) (n - warmup) / (double) total_latency * 1e9);
+    fprintf(stdout, "T\t%ld\t%ld\n", total_latency, throughput);
+
+    gsl_rng_free(rng);
+    delete extension;
+    fflush(stderr);
+}
+