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驯服Linux OOM Killer(优质英文资料翻译) - 操作系统(内核) - 清泛网 - ...
...要操作。在这样的情况下,
用户和系统管理员经常询问如何控制 OOM Killer的行为。为了方便控制,引入了 /proc/ <pid> /oom_adj旋钮,以防止系统中的重要进程被杀死,并定义要杀死的进程的顺序。oom_adj的可能值范围从 -17 到 +15...
Do you need to dispose of objects and set them to null?
...refore not keep that variable live beyond that point (ie not treat it as a root for the purposes of GC)."
– Randy supports Monica
Jun 1 '10 at 17:37
1
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Get names of all keys in the collection
...p with $addToSet to get distinct keys across the entire collection. (Use $$ROOT for referencing the top level document.)
db.things.aggregate([
{"$project":{"arrayofkeyvalue":{"$objectToArray":"$$ROOT"}}},
{"$unwind":"$arrayofkeyvalue"},
{"$group":{"_id":null,"allkeys":{"$addToSet":"$arrayofkey...
Xml serialization - Hide null values
...onvert)
{
XmlDocument doc = new XmlDocument();
XmlNode root = doc.CreateNode(XmlNodeType.Element, objectToConvert.GetType().Name, string.Empty);
doc.AppendChild(root);
XmlNode childNode;
PropertyDescriptorCollection properties = TypeDescriptor.GetProperti...
What is “(program)” in Chrome debugger’s profiler?
...
(program) is Chrome itself, the root of the tree calling all other code...it's there because the jump from native code to JavaScript, resource loading, etc. has to start somewhere :)
You can see examples of the treeview in the Chrome developer tool docs.
...
android.view.InflateException: Binary XML file: Error inflating class fragment
...he higher-level inflation failure shows up in the stack trace. To find the root cause, you have to catch and log the initial exception.
The initial cause of the error could be a wide variety of things, which is why there are so many different answers here as to what fixed the problem for each per...
Clear android application user data
...ore in private_mode. So executing this command could probalby only work on rooted devices. Otherwise you should try another approach.
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Check Whether a User Exists
...oes not exist; execute below commands to crate and try again:"
echo " root@sh1:~# adduser --home /usr/local/freeswitch/ --shell /bin/false --no-create-home --ingroup daemon --disabled-password --disabled-login $FS_USER"
echo " ..."
echo " root@sh1:~# chown freeswitch:daemon /usr/local...
Docker - a way to give access to a host USB or serial device?
...raw disk devices and so forth. Basically this allows the container to gain root on the host, which is usually not what you want.
Using the cgroups approach is better in that respect and works on devices that get added after the container as started.
See details here: Accessing USB Devices In Dock...
Nested Git repositories?
...
You could add
/project_root/third_party_git_repository_used_by_my_project
to
/project_root/.gitignore
that should prevent the nested repo to be included in the parent repo, and you can work with them independently.
But: If a user runs git c...
