2. **Check Process Memory Usage:** Use `top` or `htop` to monitor processes and their memory consumption.
3. **Check Swap Space:** Use `swapon -s` to list swap space usage.
4. **Check Kernel Messages:** Use `dmesg` to check for memory-related kernel messages.
5. **Check Page and Swap I/O:** Use `vmstat` to monitor virtual memory statistics, including page and swap I/O.
6. **Check Memory Allocation:** Use `pmap` to display memory map of a process, e.g., `pmap <pid>`.
7. **Check Huge Pages:** Use `cat /proc/meminfo` to see information about huge pages.
8. **Check Memory Leaks:** Use `valgrind` or `mtrace` for memory leak detection if applicable.
9. **Check Shared Libraries:** Use `ldd` to list shared libraries used by a program.
10. **Check Memory Allocation Failures:** Check for memory allocation failures in application logs.
11. **Check Swappiness:** Use `cat /proc/sys/vm/swappiness` to check and configure swappiness.
12. **Check Dirty Pages:** Use `cat /proc/meminfo` to monitor dirty pages in memory.
13. **Check NUMA Information:** Use `numactl` and `numastat` to check NUMA (Non-Uniform Memory Access) information.
14. **Memory Test:** Use `memtest86` or `memtest86+` for thorough memory testing.
15. **Check HugeTLB Settings:** Use `cat /proc/meminfo` to view HugeTLB settings.
16. **Check Transparent Huge Pages:** Use `cat /sys/kernel/mm/transparent_hugepage/enabled` to inspect Transparent Huge Pages status.
17. **Check Dirty Ratio:** Use `cat /proc/sys/vm/dirty_ratio` to check and configure the dirty ratio.
18. **Check Memory Modules:** Use `dmidecode` to list details about installed memory modules.
19. **Check Process Limits:** Use `ulimit -a` to view process-level memory limits.
20. **Check cgroups Memory Limits:** Use `cgget -n --values-only -g memory:/<cgroup>` to check memory limits set with cgroups.
#MemoryIssues, #MemoryTroubleshooting, #RAMUsage, #SwapSpace, #KernelMessages, #ProcessMemory, #VirtualMemory, #MemoryLeak, #SharedLibraries, #Swappiness, #DirtyPages, #NUMA, #MemoryTest, #HugeTLB, #TransparentHugePages, #DirtyRatio, #MemoryModules, #ProcessLimits, #cgroups, #MemoryAllocation
