Mohl by pomoci spusteny terminal s "iotom -o" (jako root) a "top". Sledovat hodnoty a na co se ceka presne a ktery proces co dela. Napr.
[safarikp@AcisionWork ~]$ top
top - 11:10:47 up 2 days, 1:59, 3 users, load average: 0.44, 0.70, 0.85
Tasks: 192 total, 1 running, 191 sleeping, 0 stopped, 0 zombie
Cpu(s): 6.1%us, 5.0%sy, 2.7%ni, 83.0%id, 3.2%wa, 0.0%hi, 0.1%si, 0.0%st
iotop -o
Total DISK READ: 0.00 B/s | Total DISK WRITE: 22.81 K/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
701 be/3 root 0.00 B/s 0.00 B/s 0.00 % 1.85 % [jbd2/dm-2-8]
20955 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.02 % [kworker/0:0]
V radku 3.2%wa znamena, ze se ceka na HW (nejspise preruseni, hadam ze sit). Na iotop vidim, ze se pristupuje na disk a na nic se neceka. Pokud je to disk, uvidis, ze tam mas dlouho jeden proces.
Dale, jak jsi na tom s RAM pameti. Co rika free -m