Ramdisk

ramdisk

My dl380p gen8 has 256Gb of RAM

Can I use RAM as a disk?

mkdir /tmp/ramdisk chmod 777 /tmp/ramdisk mount -t tmpfs -o size=1024m myramdisk /tmp/ramdisk

or to get something extra…

sudo mount -t tmpfs -o size=10G myramdisk /tmp/ramdisk

speedtest

For Write: dd if=/dev/zero of=/dev/shm/ram bs=1048576 count=4096 oflag=nocache conv=fsync 4096+0 records in 4096+0 records out 4294967296 bytes (4.3 GB, 4.0 GiB) copied, 2.79948 s, 1.5 GB/s

or: dd if=/dev/zero of=/tmp/ramdisk/blok bs=1048576 count=1024 oflag=nocache conv=fsync 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.560324 s, 1.9 GB/s

For Read:

dd if=/tmp/ramdisk/blok of=/dev/null bs=1048576 iflag=nocache,sync conv=nocreat

dd if=/tmp/ramdisk/blok of=/dev/null bs=1048576 iflag=nocache,sync conv=nocreat 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.240446 s, 4.5 GB/s

modprobe zram echo 80G | tee /sys/block/zram0/disksize (80G ramdisk) mkfs.ext4 /dev/zram0 (make a filesystem) mkdir /RAM (create a mountingpoint) mount /dev/zram0 /RAM

now you can use the /RAM directory (which will be gone after poweroff)