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Jan
18
comment can I buy ddr3 ram for my laptop or I have to buy ddr2?
Usually you upgrade memory to get more of it, so you avoid running out of memory when running programs which can slow down the whole computer. Making the memory itself faster usually isn't that important. So upgrading your memory might help. But why upgrade at all? Why not just stay on x86 with 4GB of ram? The answer may depend on what problem you are trying to solve.
Oct
15
comment the /home take too much memory 12G of filesystem,but i can only find 3.2G in /home
Is rebooting an option? What command reports that the files in home take up 3.2G? Are you manually adding the files up, and forgetting hidden dot files?
Oct
15
awarded  Critic
Oct
12
comment RAMDISK OS? Installing Windows 10 on a ramdisk
@Ruslan exactly. In principle it could be faster because it would load data sequentially, but just letting the filecache do its job is better in practive. In windows SuperFetch should actively preload the stuff you need anyway. The toram option is mostly useful if you want to remove the CD.
Oct
12
comment RAMDISK OS? Installing Windows 10 on a ramdisk
SSD is the way to go. However if you want a quick play with an OS on a ramdisk, you could use the toram option that many Linux Boot CDs (e.g. Ubuntu and DSL) support. This could confirm that e.g. toram doesn't speed up boot (it would probably feel fast after boot though).
Sep
13
revised Fastest Linux Filesystem on Shingled Disks
Added figures normalised relative to ext4.
Sep
12
comment Fastest Linux Filesystem on Shingled Disks
@b70568b5 I've added more benchmarks. It seems the that differences are indeed primarily not due to SMR. Thanks.
Sep
12
revised Fastest Linux Filesystem on Shingled Disks
Add control group benchmarks, and make more concise
Sep
10
comment If I image a hard drive, wipe it clean, and then restore it, are deleted files really gone?
Partclone/Clonezilla disk images skips unused space. However I understand it works at the block level, so it would restore the smaller than 512 byte fragments of deleted files that NTFS can have ( discussed at: technet.microsoft.com/en-au/sysinternals/bb897443.aspx )
Aug
30
comment Fastest Linux Filesystem on Shingled Disks
BTW, I am doing more thorough benchmarks. Should be ready in a month.
Aug
26
revised Fastest Linux Filesystem on Shingled Disks
More discussion of write cache.
Aug
26
comment Fastest Linux Filesystem on Shingled Disks
@qasdfdsaq Thanks, I removed reference to CoW. I understand that at the level of the platter shingled drives are much slower for random writes than PMR, but that the SMR can emulate faster writes due to the cache; a PMR drive + cache would presumably be faster again. Do you have a reference for the 30GB figure? There doesn't seem to be an official number, e.g. on the Seagate technical specifications. Also, optimizing for shingled drives might be a similar problem to optimising RAID 5 arrays?
Aug
26
revised Fastest Linux Filesystem on Shingled Disks
Add context of Cached Disks such as Seagate 8TB Archive
Aug
26
revised Fastest Linux Filesystem on Shingled Disks
Removed reference to CoW on shingled disks.
Aug
25
revised Fastest Linux Filesystem on Shingled Disks
Compare to unshingled performance.
Aug
25
awarded  Commentator
Aug
25
comment Fastest Linux Filesystem on Shingled Disks
Given that I am limiting the FS to mainstream ones, it would probably have to be a Seagate style?
Aug
25
comment Fastest Linux Filesystem on Shingled Disks
Not really. I will add more benchmarks as I do them to answer such questions, but someone with more benchmark experience could probably do a better job than me. Hopefully this is enough to give a rough idea whether it might be worth considering switching from ext4 on a SMR disk.
Aug
25
answered Fastest Linux Filesystem on Shingled Disks
Aug
25
asked Fastest Linux Filesystem on Shingled Disks