Disc IO 512mb vs The World
File Copy 1024 bufsize 2000 maxblocks 323047.5 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 84232.5 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 864676.5 KBps (30.0 s, 2 samples)
Pipe Throughput 449392.8 lps (10.0 s, 7 samples)
File Copy 1024 bufsize 2000 maxblocks 76893.8 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 19415.0 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 276594.9 KBps (30.0 s, 2 samples)
Pipe Throughput 86488.9 lps (10.0 s, 7 samples)
At first I thought thought this was a mistake so i ran this on another 512 and I got very similar results. I'm wondering what the hardware difference exactly is between 512mb linodes and their bigger cousins(?SSD in 512?).. Obviously more nodes on a box puts a lot of strain on IO, but I was really surprised by the margin.
Am I missing something here?
I've always had a bit of a suspicion - that there will be the least contention for resources (ie IO) on the smallest plan, because the majority of people on this plan will have next to no traffic, since this is the 'catch all' for anyone for whom IO and CPU etc are no problem (dev boxes, small hobby boxes etc). Whereas anybody on any other plan, including the second smallest plan, is likely to be making good use of their resources.
I have to agree with this. Last night I migrated from a 512 to a 768 plan and noticed that the CPU usage on the 768 plan was higher than the 512 one.
Makes sense really when you explain it that way AceStar.
On a box with low contention, this probably means no difference except in RAM. On a box with high contention, this means you'll get a bigger guaranteed share of CPU time and higher IO priority.
Personally, I've always felt that it's probably more productive to scale horizontally than vertically at Linode, as long as your bottleneck isn't RAM or bandwidth. Jed disagrees with me, though
I spooled up another 512, and got the similar results.
SSD in 512?
This one always makes me laugh ~_~
Small answer ?
Because they are not using SSDrives