diff --git a/runtime/include/runtime.h b/runtime/include/runtime.h
index 1610c00..9161de8 100644
--- a/runtime/include/runtime.h
+++ b/runtime/include/runtime.h
@@ -53,7 +53,7 @@ runtime_uvio(void)
 { return &uvio; }
 
 static unsigned long long int
-rdtsc()
+rdtsc(void)
 {
 	unsigned long long int ret = 0;
 	unsigned int cycles_lo;
diff --git a/runtime/include/types.h b/runtime/include/types.h
index 95a4566..8fdbd61 100644
--- a/runtime/include/types.h
+++ b/runtime/include/types.h
@@ -122,7 +122,7 @@ typedef enum {
 #define SBOX_PREOPEN_MAGIC (707707707) // reads lol lol lol upside down
 
 #define SOFTINT_TIMER_START_USEC (10*1000) //start timers 10 ms from now.
-#define SOFTINT_TIMER_PERIOD_USEC (1000*100) // 100ms timer..
+#define SOFTINT_TIMER_PERIOD_USEC (1000*5) // 100ms timer..
 
 #ifdef DEBUG
 #ifdef NOSTDIO
@@ -148,7 +148,7 @@ typedef enum {
 
 #define SBOX_RESP_STRSZ 32
 
-#define MOD_BACKLOG 10000
+#define MOD_BACKLOG 1000
 #define EPOLL_MAX 1024
 #define MOD_REQ_RESP_DEFAULT (PAGE_SIZE)
 #define QUIESCENSE_TIME (1<<20) //cycles!
diff --git a/runtime/src/env.c b/runtime/src/env.c
index 0dd3d03..905b7d5 100644
--- a/runtime/src/env.c
+++ b/runtime/src/env.c
@@ -191,3 +191,9 @@ env_cos(double d)
 {
 	return cos(d);
 }
+
+INLINE unsigned long long
+env_rdtsc(void)
+{
+	return rdtsc();
+}
diff --git a/runtime/tests/Makefile b/runtime/tests/Makefile
index 6f15fbb..7bc4fd7 100644
--- a/runtime/tests/Makefile
+++ b/runtime/tests/Makefile
@@ -2,7 +2,7 @@ include Makefile.inc
 
 BENCH_DIR=../../silverfish/code_benches/
 
-TESTS=empty
+TESTS=empty work
 #TESTS=forever filesys sockserver sockclient empty
 TESTSRT=$(TESTS:%=%_rt)
 BENCHES=adpcm basic_math binarytrees bitcount blowfish crc dijkstra fft function_pointers \
diff --git a/runtime/tests/empty/main.c b/runtime/tests/empty/main.c
index 1f0f0db..e86ee47 100644
--- a/runtime/tests/empty/main.c
+++ b/runtime/tests/empty/main.c
@@ -2,15 +2,10 @@
 #include <stdio.h>
 #include <string.h>
 
-#define MAX_BUF (1024*1024) //1m
-
 int
 main(int argc, char **argv)
 {
-	char *d = malloc(MAX_BUF + 1);
-	int r = read(0, d, MAX_BUF);
-	if (r <= 0) printf("%s\n", r == 0 ? "empty" : "error");
-	else        write(1, d, MAX_BUF);
+	printf("S\n");
 
 	return 0;
 }
diff --git a/runtime/tests/test_armcifar10.json b/runtime/tests/test_armcifar10.json
new file mode 100644
index 0000000..5ef8e52
--- /dev/null
+++ b/runtime/tests/test_armcifar10.json
@@ -0,0 +1,13 @@
+{
+	"active" : "yes",
+	"name" : "cifar10",
+	"path" : "cifar10_wasm.so",
+	"port" : 10000,
+	"argsize" : 1,
+        "http-req-headers" : [ ],
+	"http-req-content-type" : "image/png",
+        "http-req-size": 4096,
+        "http-resp-headers" : [ ],
+        "http-resp-size" : 128,
+	"http-resp-content-type" : "text/plain"
+}
diff --git a/runtime/tests/test_work.json b/runtime/tests/test_work.json
new file mode 100644
index 0000000..bb2c4d9
--- /dev/null
+++ b/runtime/tests/test_work.json
@@ -0,0 +1,13 @@
+{
+	"active" : "yes",
+	"name" : "work",
+	"path" : "work_wasm.so",
+	"port" : 10000,
+	"argsize" : 1,
+        "http-req-headers" : [ ],
+	"http-req-content-type" : "text/plain",
+        "http-req-size": 10485760,
+        "http-resp-headers" : [ ],
+        "http-resp-size" : 10487760,
+	"http-resp-content-type" : "text/plain"
+}
diff --git a/runtime/tests/work/main.c b/runtime/tests/work/main.c
new file mode 100644
index 0000000..b573847
--- /dev/null
+++ b/runtime/tests/work/main.c
@@ -0,0 +1,41 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#define CPU_CYCS 2100
+#define MAX_BUF (1024*1024) //1m
+
+#define ITERS_15US 125500
+#define MULTIPLE 5
+
+#define SPIN_ITERS (ITERS_15US*MULTIPLE)
+
+__attribute__((optnone)) static void
+wrk(void)
+{
+        unsigned int spin = 0;
+
+        while (spin < SPIN_ITERS) {
+                //__asm__ __volatile__("nop": : :"memory");
+                spin++;
+        }
+}
+
+//__attribute__((optnone)) int
+int
+main(void)
+{
+	char *d = malloc(MAX_BUF + 1);
+	int r = read(0, d, MAX_BUF);
+
+//	unsigned long long st = rdtsc(), en = 0;
+//	wrk();
+//	en = rdtsc();
+
+//	if (r <= 0) printf("%llu\n", en > st ? (en - st)/CPU_CYCS : -1);
+	if (r < 0)       printf("E\n");
+	else if (r == 0) printf("hello\n");
+	else             write(1, d, r);
+
+	return 0;
+}