JVM无法在Cloud Foundry中创建线程
[英]JVM unable to create a thread in Cloud Foundry
问题描述
I'm using Spring boot for the application. 
我正在使用Spring启动应用程序。 There is a particular controller when called, makes a couple of independent requests using OkHttpClient. 调用时有一个特定的控制器，使用OkHttpClient发出一些独立的请求。 I am using a thread pool of 200 threads to make these calls. 我正在使用200个线程的线程池来进行这些调用。 It works absolutely fine in the local environment. 它在当地环境中工作得非常好。 However, when deployed to cloud foundry, it shows up an error as follows. 但是，当部署到云代工厂时，它会显示如下错误。
I have reduced the number of threads to 100 but the problem still remains. 我已经将线程数减少到100但问题仍然存在。 These are the memory settings in my CF instance - 这些是我的CF实例中的内存设置 -
Instance Memory Limit 8192 MB
Memory Quota 3072 MB (available memory 1024 MB)
Disk Quota 1024 MB
This is the error - 这是错误 -
2019-05-08T19:13:35.68+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:35.686 INFO 6 --- [ool-2-thread-65] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:35.76+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:35.769 INFO 6 --- [ool-2-thread-62] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:35.81+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:35.813 INFO 6 --- [ool-2-thread-54] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:35.95+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:35.959 INFO 6 --- [ool-2-thread-73] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:35.96+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:35.967 INFO 6 --- [ool-2-thread-60] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:35.96+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:35.967 INFO 6 --- [ool-2-thread-79] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.03+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.034 INFO 6 --- [ool-2-thread-77] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.05+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.054 INFO 6 --- [ool-2-thread-75] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.06+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.066 INFO 6 --- [ool-2-thread-18] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.11+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.119 INFO 6 --- [ool-2-thread-12] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.12+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.121 INFO 6 --- [ool-2-thread-32] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.12+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.123 INFO 6 --- [ool-2-thread-71] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.12+0530 [APP/PROC/WEB/0] ERR Resource exhaustion event: the JVM was unable to create a thread.
2019-05-08T19:13:36.12+0530 [APP/PROC/WEB/0] ERR ResourceExhausted! (1/0)
2019-05-08T19:13:36.13+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.136 INFO 6 --- [ool-2-thread-44] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT | Instance Count | Total Bytes | Class Name |
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.583 INFO 6 --- [ool-2-thread-92] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.583 INFO 6 --- [ool-2-thread-59] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.583 INFO 6 --- [ool-2-thread-38] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.584 INFO 6 --- [ool-2-thread-25] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT | 100796 | 11914496 | [C |
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.584 INFO 6 --- [ool-2-thread-78] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.585 INFO 6 --- [ool-2-thread-67] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.585 INFO 6 --- [ol-2-thread-100] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT | 99630 | 2391120 | Ljava/lang/String; |
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.585 INFO 6 --- [ool-2-thread-80] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.586 INFO 6 --- [ool-2-thread-10] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT | 6940 | 2320424 | [B |
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT | 41544 | 1661760 | Ljava/util/LinkedHashMap$Entry; |
2019-05-08T19:13:36.58+0530 [APP/PROC/WEB/0] OUT | 50549 | 1617568 | Ljava/util/HashMap$Node; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 13832 | 1535128 | Ljava/lang/Class; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 42807 | 1369824 | Ljava/util/concurrent/ConcurrentHashMap$Node; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 22775 | 1279152 | [Ljava/util/HashMap$Node; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 21141 | 1183896 | Ljava/util/LinkedHashMap; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 10387 | 914056 | Ljava/lang/reflect/Method; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 11925 | 913696 | [Ljava/lang/Object; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 2202 | 618392 | [I |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 36548 | 584768 | Ljava/lang/Object; |
2019-05-08T19:13:36.59+0530 [APP/PROC/WEB/0] OUT | 1168 | 485888 | Lcom/sap/LMChatbot/services/metricSearch; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 992 | 372992 | Ljava/lang/Thread; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 200 | 370440 | [Ljava/util/concurrent/ConcurrentHashMap$Node; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 18205 | 291280 | Ljava/util/LinkedHashSet; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 1 | 262160 | [Lorg/h2/mvstore/MVMap; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 8144 | 195456 | Ljava/util/ArrayList; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 2277 | 182544 | [Ljava/lang/ThreadLocal$ThreadLocalMap$Entry; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 7532 | 172640 | [Ljava/lang/Class; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 2964 | 142272 | Lorg/json/simple/JSONObject; |
2019-05-08T19:13:36.60+0530 [APP/PROC/WEB/0] OUT | 2177 | 121576 | [Ljava/security/ProtectionDomain; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 2406 | 114776 | [Ljava/lang/String; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 4127 | 99048 | Lorg/springframework/core/MethodClassKey; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 1986 | 95328 | Ljava/util/HashMap; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 845 | 94640 | Ljava/net/SocksSocketImpl; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 2319 | 92760 | Ljava/util/TreeMap$Entry; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 1648 | 92288 | Lokio/Okio$4; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 2185 | 87400 | Ljava/security/AccessControlContext; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 3042 | 73008 | Ljava/util/Collections$UnmodifiableRandomAccessList; |
2019-05-08T19:13:36.61+0530 [APP/PROC/WEB/0] OUT | 2242 | 71744 | Ljava/util/LinkedList; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 2612 | 62688 | Ljava/util/LinkedList$Node; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 826 | 59472 | Lokhttp3/internal/connection/RealConnection; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 1846 | 59072 | Ljava/util/concurrent/locks/ReentrantLock$NonfairSync; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 801 | 57672 | Lorg/springframework/core/annotation/AnnotationAttributes; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 1778 | 56896 | Ljava/net/InetAddress$InetAddressHolder; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.625 INFO 6 --- [ool-2-thread-88] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.625 INFO 6 --- [ool-2-thread-48] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.626 INFO 6 --- [ool-2-thread-64] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.626 INFO 6 --- [ool-2-thread-91] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 1417 | 56680 | Ljava/lang/invoke/MethodType; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.626 INFO 6 --- [ool-2-thread-43] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.627 INFO 6 --- [ool-2-thread-86] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.627 INFO 6 --- [ool-2-thread-39] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 2277 | 54648 | Ljava/lang/ThreadLocal$ThreadLocalMap; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 1671 | 53472 | Ljava/lang/ref/ReferenceQueue; |
2019-05-08T19:13:36.62+0530 [APP/PROC/WEB/0] OUT | 943 | 52808 | Ljava/lang/Package; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 1059 | 50832 | Lorg/apache/tomcat/util/modeler/AttributeInfo; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 884 | 49504 | Lokhttp3/Address; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 1505 | 48160 | Ljava/util/Hashtable$Entry; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 998 | 47904 | Ljava/util/concurrent/ThreadPoolExecutor$Worker; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 984 | 47232 | Lokhttp3/HttpUrl; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 1419 | 45408 | Ljava/lang/invoke/MethodType$ConcurrentWeakInternSet$WeakEntry; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 1778 | 42672 | Ljava/net/Inet4Address; |
2019-05-08T19:13:36.63+0530 [APP/PROC/WEB/0] OUT | 1776 | 42624 | Ljava/net/InetSocketAddress$InetSocketAddressHolder; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 1331 | 42592 | Ljava/util/concurrent/FutureTask; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 866 | 41568 | Lorg/springframework/core/ResolvableType; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 10 | 41120 | [Ljava/nio/ByteBuffer; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 841 | 40368 | Ljava/net/SocketOutputStream; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 841 | 40368 | Ljava/net/SocketInputStream; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 997 | 39880 | Ljava/lang/ref/Finalizer; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 1649 | 39576 | Lokio/Buffer; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 819 | 39312 | Lch/qos/logback/classic/Logger; |
2019-05-08T19:13:36.64+0530 [APP/PROC/WEB/0] OUT | 960 | 38400 | Lorg/springframework/util/ConcurrentReferenceHashMap$Segment; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 960 | 36544 | [Lorg/springframework/util/ConcurrentReferenceHashMap$Reference; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 401 | 36336 | [Ljava/util/Hashtable$Entry; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 1135 | 36320 | Lsun/security/util/DerInputBuffer; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 1135 | 36320 | Lsun/security/util/DerValue; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 560 | 35840 | Ljava/util/concurrent/ConcurrentHashMap; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 743 | 35664 | Lorg/springframework/util/ConcurrentReferenceHashMap$SoftEntryReference; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 887 | 35480 | Ljava/math/BigInteger; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 886 | 35440 | Lokhttp3/ConnectionPool; |
2019-05-08T19:13:36.65+0530 [APP/PROC/WEB/0] OUT | 1413 | 33912 | Ljava/util/jar/Attributes$Name; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 134 | 33712 | [[C |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 1351 | 32424 | Lorg/json/simple/JSONArray; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 184 | 32384 | Lorg/springframework/context/annotation/ConfigurationClassBeanDefinitionReader$ConfigurationClassBeanDefinition; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 1295 | 31080 | Ljava/util/ArrayDeque; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 904 | 28928 | Ljava/io/FileDescriptor; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 1776 | 28416 | Ljava/net/InetSocketAddress; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 580 | 27840 | Ljava/util/concurrent/locks/ReentrantReadWriteLock$NonfairSync; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 312 | 27456 | Lorg/h2/table/Column; |
2019-05-08T19:13:36.66+0530 [APP/PROC/WEB/0] OUT | 1135 | 27240 | Lsun/security/util/DerInputStream; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 841 | 26912 | Ljava/net/Socket; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 1675 | 26800 | Ljava/lang/ref/ReferenceQueue$Lock; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 1114 | 26736 | Lsun/security/x509/AVA; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 1114 | 26736 | [Lsun/security/x509/AVA; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 1114 | 26736 | Lsun/security/x509/RDN; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 1075 | 25800 | Ljava/util/concurrent/LinkedBlockingQueue$Node; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 447 | 25032 | Ljava/lang/invoke/MemberName; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 598 | 23920 | Lokhttp3/internal/http/RealInterceptorChain; |
2019-05-08T19:13:36.67+0530 [APP/PROC/WEB/0] OUT | 297 | 23760 | Ljava/lang/reflect/Constructor; |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 140 | 23520 | Lorg/springframework/beans/factory/support/RootBeanDefinition; |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 1443 | 23088 | Ljava/util/LinkedHashMap$LinkedKeySet; |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.682 INFO 6 --- [ool-2-thread-83] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 960 | 23040 | Lorg/springframework/util/ConcurrentReferenceHashMap$ReferenceManager; |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 477 | 22896 | Lorg/apache/tomcat/util/modeler/OperationInfo; |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 290 | 22744 | [Z |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 566 | 22640 | Ljava/lang/ref/SoftReference; |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 1332 | 21312 | Lorg/springframework/core/annotation/AnnotationUtils$DefaultValueHolder; |
2019-05-08T19:13:36.68+0530 [APP/PROC/WEB/0] OUT | 884 | 21216 | Lokhttp3/Route; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT | 882 | 21168 | Ljava/net/Proxy; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT | 326 | 20864 | Ljava/net/URL; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT | 630 | 20160 | Ljavax/management/MBeanAttributeInfo; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT | 824 | 19776 | Lokio/RealBufferedSource; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT | 824 | 19776 | Lokio/Okio$2; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT | 824 | 19776 | Lokio/Okio$1; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36.695 INFO 6 --- [ool-2-thread-56] ContainerTrustManagerFactory$PKIXFactory : Adding System Trust Manager
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] OUT | 824 | 19776 | Lokio/RealBufferedSink; |
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] ERR ERROR: PoolStats action failed: cannot determine memory usage statistics since the JVM is unable to create a thread
2019-05-08T19:13:36.69+0530 [APP/PROC/WEB/0] ERR jvmkill killing current process
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT 2019-05-08 13:43:36
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT Full thread dump OpenJDK 64-Bit Server VM (25.212-b03 mixed mode):
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT "OkHttp ConnectionPool" #2406 daemon prio=5 os_prio=0 tid=0x00005641e28d4000 nid=0x467 in Object.wait() [0x00007ff04cd4f000]
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT java.lang.Thread.State: TIMED_WAITING (on object monitor)
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT at java.lang.Object.wait(Native Method)
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT at java.lang.Object.wait(Object.java:460)
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT at okhttp3.ConnectionPool$1.run(ConnectionPool.java:65)
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT - locked <0x00000000e7f80178> (a okhttp3.ConnectionPool)
2019-05-08T19:13:36.70+0530 [APP/PROC/WEB/0] OUT at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149
I have also tried to reduce the number of threads to 75 but the problem remains. 我也尝试将线程数减少到75，但问题仍然存在。 If I can work with 200 threads in my local system (16GB Ram Windows), then why would there be an issue with 75~100 threads in Cloud Foundry? 如果我可以在我的本地系统（16GB Ram Windows）中使用200个线程，那么为什么Cloud Foundry中存在75~100个线程的问题？
EDIT 编辑
Including the section of the code that creates the threads- 包括创建线程的代码部分 -
ExecutorService executor = Executors.newFixedThreadPool(100);
for (Object metricObj : metrics) {
JSONObject metric = (JSONObject) metricObj;
String metricTypeId = (String) metric.get("MetricTypeID");
Callable<JSONArray> callable = new metricSearch(metric, type, systemType, odataHandler, systemContextId);
Future<JSONArray> future = executor.submit(callable);
// add Future to the list, we can get return value using Future
list.add(future);
}
executor.shutdown();
So basically, for every object in metrics List (around 1000), I am submitting a job to the Executors, which has a thread limit of 100. So those 1000 jobs are supposed to be executed by a thread pool of 100 threads. 基本上，对于度量列表中的每个对象（大约1000），我向Executors提交一个作业，其线程限制为100.因此，这1000个作业应该由100个线程的线程池执行。
1 个解决方案
解决方案1
0 已采纳 2019-05-10 03:35:02
So, each of these threads make a REST API call. 因此，每个线程都会进行REST API调用。 I was creating a new instance of OkHttpClient for each thread. 我正在为每个线程创建一个新的OkHttpClient实例。 As it turns out, each client instance would spawn many threads of its own internally. 事实证明，每个客户端实例都会在内部生成自己的许多线程。 So the total number of threads were more than what I specified. 所以线程的总数超过了我指定的数量。
After sharing the same instance for the OkHttpClient client with all the threads, the issue seems to be resolved. 在与所有线程共享OkHttpClient客户端的相同实例后，问题似乎得到解决。
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