Question

当我在覆盆子PI上启动KAA客户端SDK（JAVA）时，CPU使用率最高可达100％。一旦我终止进程，CPU使用率就会恢复正常

下面是用于启动kaa的代码片段，我将在覆盆子pi上启动kaa客户端

public class NotificationSystemTestApp {

    private static final Logger LOG = LoggerFactory.getLogger(NotificationSystemTestApp.class);

    public static void main(String[] args) throws InterruptedException {
        /*System.out.println(encryptString("abcd", "12332sd1133sdssd45"));
        return;*/
        new NotificationSystemTestApp().launch();
    }

    private void launch() throws InterruptedException {
        // Create client for Kaa SDK

        final KaaClient kaaClient;
        DesktopKaaPlatformContext desktopKaaPlatformContext = new DesktopKaaPlatformContext();
        final CountDownLatch startupLatch = new CountDownLatch(1);
        kaaClient = Kaa.newClient(desktopKaaPlatformContext, new SimpleKaaClientStateListener() {
            @Override
            public void onStarted() {
                LOG.info("--= Kaa client started =--");
                startupLatch.countDown();
            }

            @Override
            public void onStopped() {
                LOG.info("--= Kaa client stopped =--");
            }
        }, true);

        kaaClient.setProfileContainer(new ProfileContainer() {
            public ClientProfile getProfile() {
                return new ClientProfile() {{
                    setClientProfileInfo(new ProfileInfo() {{
                        setRidlrId("R_00001");
                        setStationName("Mumbai");
                        setEquipmentId("EQ0006");
                        setStationId("5");
                    }});
                }};
            }
        });
        // Registering listener for topic updates

        kaaClient.start();
        startupLatch.await();

        kaaClient.addTopicListListener(new NotificationTopicListListener() {
            public void onListUpdated(List<Topic> topicList) {
                System.out.println("Topic list updated!");
                for (Topic topic : topicList) {
                    LOG.info("Received topic with id {} and name {}", topic.getId(), topic.getName());
                }
            }
        });

        final ScanInfo scanInfo = new ScanInfo() {{
            setDestinationId("12");
            setSourceId("3");
            setEquipmentId("R_00001");
            setScanTime(System.currentTimeMillis() / 1000);
            setEvent("ENTRY");
            setTransactionId(UUID.randomUUID().toString());
        }};

        kaaClient.attachEndpoint(new EndpointAccessToken("1234"), new OnAttachEndpointOperationCallback() {
            @Override
            public void onAttach(SyncResponseResultType result, EndpointKeyHash resultContext) {

            }
        });
        kaaClient.attachUser("user1", "1234", new UserAttachCallback() {
            public void onAttachResult(UserAttachResponse response) {
                System.out.println("Attach User Success - " + response.getResult());
            }
        });


        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            LOG.error("FATA", e);
        }


        LOG.debug("End Point key hash - " + kaaClient.getEndpointKeyHash());
        while (true) {
            kaaClient.addLogRecord(new LoggerSchema() {{
                setData("");
                setMessageType("");
            }});
            Thread.sleep(10);
        }
    }
}

谢谢， RIZWAN

Answer 1

正如我所见，您使用不断添加的日志记录来上传到Kaa服务器。延迟只有10毫秒，对于运行应用程序的Raspberry PI系统来说可能太短了。

根据配置的不同，Kaa Client可能会为每个日志记录增加相当大的处理开销，并在其他Java线程中进行处理，从而导致CPU不断旋转添加和处理新记录。

尝试增加＆＃39; while（true）＆＃39;循环并使用不同的日志上载设置检查CPU使用情况。

如果此信息不足以解决问题，请从Kaa客户端和Kaa服务器添加日志进行调查。

在kaa客户端启动时PI上的高CPU使用率

1 个答案: