Difference between revisions of "RAM"
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== Activities == | == Activities == | ||
| − | # Review how much RAM you have in your linux computer by executing: <code>cat | + | # Review how much RAM you have in your linux computer by executing: <code>cat [[/proc/meminfo]]</code> |
# Review physical RAM modules in Linux as [[w:superuser|superuser]] with: <code>[[w:dmidecode|dmidecode]] --type memory</code> | # Review physical RAM modules in Linux as [[w:superuser|superuser]] with: <code>[[w:dmidecode|dmidecode]] --type memory</code> | ||
# Learn about how much RAM can a single [[CPU]] socket support in [[system administration/ProLiant|modern enterprise hardware]]. As of 2019 some servers support up to 3.0 TB per socket.<ref>https://www.hpe.com/uk/en/product-catalog/servers/proliant-servers/pip.hpe-proliant-dl380-gen10-server.1011484040.html</ref> | # Learn about how much RAM can a single [[CPU]] socket support in [[system administration/ProLiant|modern enterprise hardware]]. As of 2019 some servers support up to 3.0 TB per socket.<ref>https://www.hpe.com/uk/en/product-catalog/servers/proliant-servers/pip.hpe-proliant-dl380-gen10-server.1011484040.html</ref> | ||
# Use <code>[[free (command)|free]]</code> command in Linux to review your memory usage | # Use <code>[[free (command)|free]]</code> command in Linux to review your memory usage | ||
| − | # Use <code>[[ | + | # Use <code>[[sar -r]]</code> to view historical memory usage |
# Compare [[SDD]] and RAM speeds | # Compare [[SDD]] and RAM speeds | ||
| + | |||
| + | |||
| + | == Related terms == | ||
| + | * [[HPE Fast Fault Tolerance]] | ||
| + | * [[RAM pickup]] | ||
| + | * [[Resource Access Management]] | ||
== See also == | == See also == | ||
| − | * | + | * {{RAM}} |
| − | * [[ | + | * [[wikipedia:DDR4_SDRAM]] and [[wikipedia:DDR5_SDRAM]] |
| − | * [[KVM]]: [[ | + | * [[KVM]]: [[Virsh Memory Commands]] |
| − | * [[CPU]] and [[ | + | * [[CPU]], [[HDD]] and [[SSD]] |
* [[Linux server administration/Performance and Troubleshooting]] | * [[Linux server administration/Performance and Troubleshooting]] | ||
* [[Memory Unit]] | * [[Memory Unit]] | ||
| + | * {{memory}} | ||
[[Category:Hardware]] | [[Category:Hardware]] | ||
| + | [[Category:memory]] | ||
Latest revision as of 09:29, 4 February 2022
Random-access memory (RAM /ræm/) is a form of computer memory that can be read and write in any order typically used for CPU operations and storing volatile information.
Activities[edit]
- Review how much RAM you have in your linux computer by executing:
cat /proc/meminfo - Review physical RAM modules in Linux as superuser with:
dmidecode --type memory - Learn about how much RAM can a single CPU socket support in modern enterprise hardware. As of 2019 some servers support up to 3.0 TB per socket.[1]
- Use
freecommand in Linux to review your memory usage - Use
sar -rto view historical memory usage - Compare SDD and RAM speeds
Related terms[edit]
See also[edit]
- Memory: RAM, DRAM, SDRAM, NVRAM, DMA, ECC, VRAM, Nanya, SGRAM, DDR
- wikipedia:DDR4_SDRAM and wikipedia:DDR5_SDRAM
- KVM: Virsh Memory Commands
- CPU, HDD and SSD
- Linux server administration/Performance and Troubleshooting
- Memory Unit
- Memory: memory pages, RAM, virsh Memory Commands, OOM, meminfo,
vmstat, NAND, DDR,lsmem,/dev/shm,/proc/meminfo,sar -r, IOMMU,pmem, Memory management, Garbage collector, THP, Linux Huge Page TLB, usage, Remote direct memory access (RMDA), SK Hynix, HBM
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