#Linux, da qualche tempo il mio #OS di default (adesso ho #debian9 con #xfce – da quando ancora in rc – la versione definitiva verrà rilasciata tra un paio di giorni), è un sistema che mi piace sempre più! Oggi, ad esempio, stavo cercando info per eventuale upgrade hardware e provavo a capire un po’ di più sulle ram installate e l’eventuale capacità massima. Da breve ricerca, ho subito trovato due comandini da terminale che danno tutte le info utili (meglio che smontarlo e cercare il manuale della mobo) xD
Capacità massima (dalla motherboard):
root@debian:/# dmidecode -t 16
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.5 present.
Handle 0x002D, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Info sulle ram installate:
root@debian:/# dmidecode -t 17
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.5 present.
Handle 0x002F, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x002D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 72 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: DIMM0
Bank Locator: BANK0
Type: DDR2
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Manufacturer0
Serial Number: SerNum0
Asset Tag: AssetTagNum0
Part Number: PartNum0
Handle 0x0031, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x002D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 72 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: DIMM1
Bank Locator: BANK1
Type: DDR2
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Manufacturer1
Serial Number: SerNum1
Asset Tag: AssetTagNum1
Part Number: PartNum1
Handle 0x0033, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x002D
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: DIMM2
Bank Locator: BANK2
Type: Unknown
Type Detail: Unknown
Speed: Unknown
Manufacturer: Manufacturer2
Serial Number: SerNum2
Asset Tag: AssetTagNum2
Part Number: PartNum2
Handle 0x0035, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x002D
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: DIMM3
Bank Locator: BANK3
Type: Unknown
Type Detail: Unknown
Speed: Unknown
Manufacturer: Manufacturer3
Serial Number: SerNum3
Asset Tag: AssetTagNum3
Part Number: PartNum3
Ram libera/usata:
root@debian:/# free
total used free shared buff/cache available
Mem: 4051200 3413844 179476 174648 457880 239932
Swap: 4190204 81532 4108672
##### Oppure #####
root@debian:/# cat /proc/meminfo
MemTotal: 4051200 kB
MemFree: 111884 kB
MemAvailable: 174380 kB
Buffers: 16304 kB
Cached: 427780 kB
SwapCached: 14252 kB
Active: 3030744 kB
Inactive: 714556 kB
Active(anon): 2884228 kB
Inactive(anon): 613472 kB
Active(file): 146516 kB
Inactive(file): 101084 kB
Unevictable: 96 kB
Mlocked: 96 kB
SwapTotal: 4190204 kB
SwapFree: 4097268 kB
Dirty: 188 kB
Writeback: 0 kB
AnonPages: 3287948 kB
Mapped: 362120 kB
Shmem: 196464 kB
Slab: 78568 kB
SReclaimable: 37736 kB
SUnreclaim: 40832 kB
KernelStack: 9232 kB
PageTables: 51208 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 6215804 kB
Committed_AS: 8253088 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 155392 kB
DirectMap2M: 4038656 kB
Volete sapere tutto in tempo reale?
root@debian:/# top
top - 19:27:27 up 1:06, 1 user, load average: 1,71, 1,45, 1,02
Tasks: 211 total, 1 running, 208 sleeping, 0 stopped, 2 zombie
%Cpu(s): 5,4 us, 1,8 sy, 0,0 ni, 92,1 id, 0,7 wa, 0,0 hi, 0,0 si, 0,0 st
KiB Mem : 4051200 total, 146620 free, 3497220 used, 407360 buff/cache
KiB Swap: 4190204 total, 3935316 free, 254888 used. 153764 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
697 root 20 0 507292 109620 22572 S 4,3 2,7 5:47.86 Xorg
2924 lupastro 20 0 504148 22252 12064 S 3,0 0,5 0:04.29 xfce4-term+
1007 lupastro 20 0 1817924 224820 35708 S 1,7 5,5 1:48.39 thunderbird
2853 lupastro 20 0 1215772 385748 106028 S 1,3 9,5 0:46.92 chrome
3159 lupastro 20 0 1119452 272520 60828 S 1,3 6,7 0:10.67 chrome
1955 lupastro 20 0 1389628 215112 97604 S 0,7 5,3 4:48.17 chrome
2894 lupastro 20 0 1154792 313680 84020 S 0,7 7,7 2:40.94 chrome
3152 root 20 0 45040 3160 2392 R 0,7 0,1 0:00.43 top
834 lupastro 20 0 192824 13136 8960 S 0,3 0,3 0:42.29 xfwm4
898 lupastro 20 0 423924 16968 10460 S 0,3 0,4 0:10.74 xfce4-panel
936 lupastro 20 0 173924 7184 6420 S 0,3 0,2 0:04.88 panel-19-c+
1269 root 20 0 0 0 0 S 0,3 0,0 0:03.62 kworker/0:5
1780 lupastro 20 0 1254108 641196 11988 S 0,3 15,8 0:25.83 gimp-2.8
2131 lupastro 20 0 1548388 374960 104644 S 0,3 9,3 0:58.44 chrome
2666 root 20 0 0 0 0 S 0,3 0,0 0:02.85 kworker/u4+
1 root 20 0 139224 2888 1748 S 0,0 0,1 0:01.06 systemd
2 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0,0 0,0 0:00.10 ksoftirqd/0
4 root 20 0 0 0 0 S 0,0 0,0 0:02.63 kworker/0:0
5 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/0:+
7 root 20 0 0 0 0 S 0,0 0,0 0:03.14 rcu_sched
8 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcu_bh
9 root rt 0 0 0 0 S 0,0 0,0 0:00.00 migration/0
10 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 lru-add-dr+
11 root rt 0 0 0 0 S 0,0 0,0 0:00.01 watchdog/0
12 root 20 0 0 0 0 S 0,0 0,0 0:00.00 cpuhp/0
13 root 20 0 0 0 0 S 0,0 0,0 0:00.00 cpuhp/1
14 root rt 0 0 0 0 S 0,0 0,0 0:00.00 watchdog/1
15 root rt 0 0 0 0 S 0,0 0,0 0:00.14 migration/1
16 root 20 0 0 0 0 S 0,0 0,0 0:00.65 ksoftirqd/1
18 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/1:+
19 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kdevtmpfs
20 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 netns
21 root 20 0 0 0 0 S 0,0 0,0 0:00.00 khungtaskd
22 root 20 0 0 0 0 S 0,0 0,0 0:00.00 oom_reaper
23 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 writeback
24 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kcompactd0
26 root 25 5 0 0 0 S 0,0 0,0 0:00.00 ksmd
27 root 39 19 0 0 0 S 0,0 0,0 0:00.00 khugepaged
28 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 crypto
29 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kintegrityd
30 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 bioset
31 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kblockd
32 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 devfreq_wq
Facile, non trovate? 😀
Altri comandi utili da segnalare? Tanto da farci un articolo? Commentate 😉
Shortlink: https://www.laltroweb.it/?p=6026 (Copia)