These files are named in the following format: atop_ccyymmdd. The atop tool creates log files in /var/log/atop. Resolution Install atopįor installation instructions, see How do I configure the ATOP and SAR monitoring tools for my EC2 instance running Amazon Linux, RHEL, CentOS, or Ubuntu? Read atop report logs for historical review and analysis Historical performance data about processes can't be retrieved before the date of atop's installation. Note: Atop starts logging data only after it's installed.

The stats are stored for 28 days, by default. The atop tool stays active as a background service while it records the stats, allowing for long-term server analysis. You can retrieve usage for CPU utilization, memory consumption, and disk I/O for each process and thread. This tool can also do real-time reporting.

Just like with Memtest86, you'll need a working operating system like Windows, Mac, or Linux to create the bootable disc or flash drive, which can be done on a different computer than the one that needs testing.The atop tool is a performance monitoring tool that records historical resource usage for later analysis. It might seem a bit strange that we rank this as the #3 pick, but since it's so incredibly similar to Memtest86, your best bet is to try Memtest86 followed by WMD, which operates differently, providing you with a more well-rounded set of memory tests.

Memtest86+ is available in ISO format for burning to disc or USB. We'd recommend performing a memory test with this software if you have any problems running the Memtest86 RAM test or if Memtest86 reports errors with your memory, and you'd like an excellent second opinion. Memtest86+ is a modified, and presumably more up-to-date, version of the original Memtest86 memory test program, profiled in the #1 position above. Like these other tools, this one is entirely text-based and so might be hard to get used to for some people.

Linux monitor process memory