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Apr
10
awarded  Popular Question
Apr
4
comment Determine if a Document is open in an Editor
None of the editors I use do a three way merge, and anyway I'd like to avoid three way merges. I guess sending a "Save All" message to all editors prior to housekeeping tasks would be good enough for me, but LyX doesn't warn that the file is changed until I try to save, and then I have to do a manual 3-way merge. Is when to warn about editing a changed file part of some standard or HIG?
Apr
4
revised Determine if a Document is open in an Editor
Added more of my motivation as to why I want to do this.
Apr
4
asked Determine if a Document is open in an Editor
Mar
9
revised chunking screen output using grep/head/awk/sed/etc
add missing quotes, so works even if there are spaces in the line
Mar
7
comment chunking screen output using grep/head/awk/sed/etc
@barrrista Does the new catn function work for you?
Mar
7
revised chunking screen output using grep/head/awk/sed/etc
Fixed head -n closing pipe, by changing to now catn function.
Mar
7
answered chunking screen output using grep/head/awk/sed/etc
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?