
Else just check manually when it becomes unstable / unresponsive - see how much idle time is left. Sometimes, when I check the top connections with cpview, I see a client downloading a file over https with 60Mbit/s over our WAN connection. While this, in my opinion, shouldn’t cause a gateway to max out, I can understand. I will hardly see any traffic in cpview, but ‘top’ gives me an output like the one below. The setup is a 4200 appliance running R80.10 (but also R77.30 had these issues), with only the Firewall, VPN, Identity Awareness, Application & URL filtering blades enabled.
Hot cache is good, it means less cache misses and higher performance. On a multiprocessor, the thread holding the lock may be presently active on another processor, and it could release the lock at any time. On a multiprocessor, spin-locking can be worthwhile if the average time spent spinning is less than the average overheads of context switch away from, and back to, the lock requestor.
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While these issues have been going for a while, they are becoming quite disruptive lately. Thread affinity is where a thread has a preferential processor for scheduling on a multiprocessor machine. This increases the probability of being scheduled on the processor previously scheduled on, which in turn increases the probability of being scheduled onto a processor that has a hot cache.
If a thread doesn’t get to run, it may not get a chance to release any resources that it is holding. The Universal Extensible Firmware Interface, UEFI, is a successor to the BIOS and contains a boot manager that can directly boot files that are placed into an UEFI boot partition. It has the intelligence to parse several file system types so that it can load a VLC media player file that does not necessarily occupy consecutive disk blocks. The files that are loaded from the UEFI partition are often boot loaders for individual operating systems that then load in the file or files that comprise the operating system. Do you have any monitoring tools in place to see CPU history per core?
Educause 2018: Software
- You can also use ManyCam as your video source on YouTube to record videos of your desktop.
- Record a video of your desktop and save it to your computer, or decide to screencast your desktop live while using ManyCam.
- A screencast is a recorded video of the actions you take on your computer screen.
- Choose to cut or slowly transition between different sources.
The problem is, I have no clue as to what’s causing this and my troubleshooting skills are not up to par. I’m having issues with a 4200 appliance and it’s performance.
