Merge pull request #949 from albertxu216/develop

修改emwa策略，仅输出延迟过大的点,并更改可视化面板
linuxkerneltravel · Dec 11, 2024 · f539818 · f539818
2 parents b5fc205 + e25f9d2
commit f539818
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Showing 2 changed files with 6 additions and 5 deletions.
diff --git a/MagicEyes/src/backend/process/cpu_watcher/include/cpu_watcher_helper.h b/MagicEyes/src/backend/process/cpu_watcher/include/cpu_watcher_helper.h
@@ -52,16 +52,17 @@ bool dynamic_filter(struct ewma_info *ewma_syscall_delay, double dataPoint) {
 
 	if(ewma_syscall_delay->previousEWMA == 0) {//初始化ewma算法，则赋值previousEWMA = dataPoint 并打印
 		ewma_syscall_delay->previousEWMA = dataPoint;
-		return 1;
+		return 0;
 	}
-	if(ewma_syscall_delay->count <30){
+	if(ewma_syscall_delay->count <10){
 		ewma_syscall_delay->previousEWMA = calculateEWMA(ewma_syscall_delay->previousEWMA,dataPoint,alpha);//计算
-		return 1;
+		ewma_syscall_delay->count++;
+        return 0;
 	}
 	else{
 		ewma_syscall_delay->previousEWMA = calculateEWMA(ewma_syscall_delay->previousEWMA,dataPoint,alpha);//计算
 		threshold = ewma_syscall_delay->previousEWMA * TOLERANCE;
-		if(dataPoint >= threshold) return 1;
+		if(dataPoint > threshold*5) return 1;
 	}
     return 0;
 }

diff --git a/MagicEyes/src/backend/process/cpu_watcher/src/cpu_watcher.c b/MagicEyes/src/backend/process/cpu_watcher/src/cpu_watcher.c
@@ -911,7 +911,7 @@ int main(int argc, char **argv)
 			fprintf(stderr, "Failed to attach BPF skeleton\n");
 			goto sc_delay_cleanup;
 		}
-		printf("%-8s   %-8s   %-15s %-15s\n","Time","Pid","syscall_id","delay/ms");
+		printf("%-8s   %-8s   %-15s %-15s\n","Time","Pid","syscall_id","delay/us");
 		rb = ring_buffer__new(bpf_map__fd(sc_skel->maps.rb), syscall_delay_print, NULL, NULL);	//ring_buffer__new() API，允许在不使用额外选项数据结构下指定回调
 		if (!rb) {
 			err = -1;