From the course: Linux Performance Tuning
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top and htop for memory usage - Linux Tutorial
From the course: Linux Performance Tuning
top and htop for memory usage
- [Instructor] Let's look at our memleak.c file, and we see it loops 30 times, mallocing 100 meg each time, with a sleep in between, so it's going to run something over 30 seconds. And we're going to run that, and while it's running, we're going to look at top and htop. And to make sure we have enough time, I'm just going to run it in a loop. So while true do memleak done. All right, so that's running in this window. I'll switch over to another window and I'll run top, and top is now sorting by percent CPU and memleak doesn't seem to be using a lot of CPU there. So we're going to switch to percent memory so we do a little f and we get the list, down arrow brings us brings us to percent mem, and if you read the little list on top of directions we see we need to do a right arrow to select, then a left arrow to commit, than as S to say we want to sort on that, and then an escape. Now we're sorting on percent mem and memleak's way up there at the top, using over 30%. And then memleak went…
Contents
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What is a memory leak?6m 53s
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(Locked)
/proc/meminfo, free, and swap space4m 34s
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(Locked)
top and htop for memory usage2m 45s
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(Locked)
CPU caches and page caches12m 43s
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(Locked)
Page sizes and page faults11m 17s
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(Locked)
Challenge: Finding memory bottlenecks2m 19s
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(Locked)
Solution: Finding memory bottlenecks6m 55s
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