具体异常信息如下:
root@test-6cf7db85b7-sxk8h:/# jmap 7
Attaching to process ID 7, please wait...
ERROR: ptrace(PTRACE_ATTACH, ..) failed for 7: Operation not permitted
Error attaching to process: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process: ptrace(PTRACE_ATTACH, ..) failed fo
我想检查我的应用程序是否很好地获得了-Xmx选项。
java进程在docker容器中运行。
为了做到这一点,我要找到所创建进程的最大堆大小。
首先,我尝试了jmap命令,但是它发生了一个错误:
bash-4.2$ jmap -heap 128
Attaching to process ID 128, please wait...
Error attaching to process: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process: ptrace(PTRACE_ATTACH, ..) fai
当我尝试执行sudo opensnoop-bpfcc时,我得到这样的消息:
In file included from /virtual/main.c:4:
In file included from include/linux/sched.h:14:
In file included from include/linux/pid.h:5:
In file included from include/linux/rculist.h:11:
In file included from include/linux/rcupdate.h:40:
In file included from inclu
当运行jpenable以允许高寒中的Jprofiler10分析时:3.3容器运行JDK 8时,我将得到一个UnsatisfiedLinkError异常。有什么想法吗?
ERROR: The agent could not be loaded: Picked up _JAVA_OPTIONS: -Xmx1024m
Exception in thread "main" java.lang.UnsatisfiedLinkError: /opt/jprofiler10/bin/
linux-x64/libattach.so: Error relocating /opt/jprofile
我在尝试开始JFR录制时收到AttachNotSupportedException。它一直工作正常,直到现在。
jcmd 3658 JFR.start maxsize=100M filename=jfr_1.jfr dumponexit=true settings=profile
输出:
3658:
com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded
at sun.t
由于某种原因,我无法依附于我自己的过程?!如果我尝试将strace作为根用户,那么工作得很好。
$ ./list8 &
[1] 3141
$ child4 starts...
$ strace -p 3141
attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted
Could not attach to process. If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace
我想要一个包裹着文字的人像。
我就是这么说的:
Installation of Optional Accessories
====================================
.. warning:: Never plug in or unplug a Hand Robot or a Grasp Sensor while the robot is turned on, as the system will not function properly and damage to the robot could occur.
Installing a Hand Robot
在使用Java Attach API时,我只在Linux上得到以下链接错误(在不同的机器上尝试过):
Exception in thread "main" java.lang.UnsatisfiedLinkError: sun.tools.attach.WindowsAttachProvider.tempPath()Ljava/lang/String;
at sun.tools.attach.WindowsAttachProvider.tempPath(Native Method)
at sun.tools.attach.WindowsAttac
嗨,我正在学习如何使用eBPF地图,所以我试着运行我在密件抄送文档上找到的简单代码。
import os
import socket
import time
import logging
import signal
import sys
import zmq
import json
import yaml
import netifaces as ni
from bcc import BPF
from ctypes import *
b = BPF(src_file="tailcall_test.c")
tail_fn = b.load_func("tail_call&
我正在尝试在安装Bitnami /SVN堆栈和Tomcat服务器的实例上安装certbot。
yum install -y certbot python2-certbot-apache
我一直在
No package certbot available.
No package python2-certbot-apache available.
Error: Nothing to do
但是它在另一个(更新的)实例上运行得很好,一个托管我们网站的实例!
/etc/os-在Trac/SVN/Tomcat实例上发布(它不会安装的实例)显示:
NAME="Amazon Linux AMI
-DQUOTE=yes在下面的代码中是如何工作的?
我希望第二行是ifelse(yes,yes,Learn Linux today!)
其他部分对我来说是有意义的。
来自Linux袖珍指南-丹尼尔·巴雷特著
$ cat myfile
My name is NAME and I am AGE years old.
ifelse(QUOTE,yes,Learn Linux today!)
$ m4 -DNAME=Sandy -DAGE=25 -DQUOTE=yes myfile
My name is Sandy and I am 25 years old.
Learn Linux today
在linux机器中将线程转储到Java上有时会失败,使用j堆栈时出现以下错误:
1455: Unable to open socket file /proc/1455/root/tmp/.java_pid1455: target process 1455 doesn't respond within 10500ms or HotSpot VM not loaded**strong text**
与jcmd:-
com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target pro
我试图用这段代码记录Astra模型中的深度和颜色流。它基本上是工作的,但有一个问题,在成功记录后,下一个将不会记录深度流,没有任何错误或异常,除非您拔下并重新连接usb电缆。这让我想到write_files方法的最终指令不能正常工作,不知何故有些东西没有正确关闭(流、录像机、设备)。)。我尝试了不同的close和stop组合,但没有任何运气。使用Orbbec提供的最新OpenNI2包,在Ubuntu16.04和Win10上的行为是相同的。相机是阿斯特拉。有什么帮助吗? from datetime import datetime
import time
import argparse
impo