Contents
Is it bad to max out CPU usage?
If the CPU usage is around 100%, this means that your computer is trying to do more work than it has the capacity for. This is usually OK, but it means that programs may slow down a little. If the processor is running at 100% for a long time, this could make your computer annoyingly slow.
Why MongoDB is so slow?
The slow queries can happen when you do not have proper DB indexes. Without indexes, MongoDB must perform a collection scan, i.e. scan every document in a collection, to select those documents that match the query statement. And it can take a while if you have many documents in your collection.
Does MongoDB keep everything in memory?
MongoDB is not an in-memory database. Although it can be configured to run that way. But it makes liberal use of cache, meaning data records kept memory for fast retrieval, as opposed to on disk.
Is 100% CPU usage bad for gaming?
CPUs are designed to run safely at 100% CPU utilization. However, you’ll want to avoid these situations whenever they cause perceptible slowness in games. If your CPU simply can’t keep up with the games or programs you’re asking it to run, it may be time for an upgrade.
What’s the CPU usage of a MongoDB server?
We have set up our production MongoDB which was populated by our test one so we had something to work off of. As soon as we started the service we hit instant 100% CPU load with nothing running, so we removed the server from it’s replica set and got it down to 2-3% CPU.
How long has MongoDB been up and running?
PS: The db is up for 9 weeks and didn’t cause problems. There is a function called db.currentOp () which lists the currently running queries with very detailed information, it also includes the duration they have been running ( secs_running ).
How to kill a query in MongoDB stack?
You can then use the currentOp.opid with db.killOp () to kill that query/operation. If db.currentOp () doesn’t return any results, because there is no query which went havoc, then there’s also db.setProfilingLevel () which will enable profiling by storing queries into the “local” database.