在雪豹上运行Java 6。
你应该能够。即使在我的命令提示符下,jinfo也谈到如何启用通用标志:
Usage:
jinfo [option] <pid>
(to connect to running process)
...
where <option> is one of:
-flag [+|-]<name> to enable or disable the named VM flag
据我所知,DTrace标志没有任何特殊的价值,重要的是它们的存在与否。
但是当我尝试去做的时候,我得到了两个错误中的一个,这取决于我
我使用docker构建了一个java程序,Dockerfile的开头是
FROM openjdk:8-jdk-alpine
但是我注意到jvm命令jinfo没有-flags,有什么问题吗?
bash-4.4# ./jinfo
Usage:
jinfo <option> <pid>
(to connect to a running process)
where <option> is one of:
-flag <name> to print the v
我(PHP新手)正在我的Linux/Apache服务器上设置一个遗留的PHP网站。
当我在我的浏览器中测试站点时,我得到了这个错误:
Warning: move_uploaded_file(/var/tmp/jinfo/Circuit/best_cities.csv):
failed to open stream: Permission denied in /var/www/jinfo/includes/jinfo.inc.php on line 89
Warning: move_uploaded_file(): Unable to move '/tmp/phpMLE9Ox'
当我尝试使用jmap、jinfo等并尝试连接到正在运行的jvm时,我得到了以下错误。 例如 [x@y bin]$ jmap -heap 3848
Attaching to process ID 3848, please wait...
Error attaching to process: java.lang.RuntimeException: can't determine target's VM version : field "_reserve_for_allocation_prefetch" not found in type Abstract_VM
我做了个测试看看我是否被黑了。我得到了这样的回应:
Searching for suspicious files and dirs, it may take a while... The following suspicious files and directories were found:
/usr/lib/jvm/.java-1.11.0-openjdk-amd64.jinfo /usr/lib/jvm/.java-1.8.0-openjdk-amd64.jinfo /usr/lib/python3/dist-packages/matplotlib/tests/baseline_i
我有这样的代码:
tInteger :
begin
if(jinfo<maxinfo) then
begin
jinfo:=jinfo+1;
lokasi[jinfo]:=ScanStr;
WRITE(ResFile,jinfo:4);
end;
WRITE(ResFile,' ');
WRITE(ResFile,inum);
end;`
BEGIN
ScanStr:='';
运行以下命令列出所有可用的jvm标志:
jcmd 24468 VM.flags -all | less -N
然后在最后一栏中找到以下值(在linux上使用JDK1.8 )
* product
default value is the same on all platform,
* pd product
default value is platform-dependent,
* manageable
could change dymanically in runtime,
*
* C1 product
* C2 product
*
* C1 pd product