Neo,
i am unsure if there is supposed to be a timestamp but i think the other skins had a full timestamp to the second on when someone posted.
right now i can only see the title - date but no HH:MM:SS any possability of getting this back? (7 Replies)
Hi,
I am attempting to configure my ethernet interface on a Sun Blade 1500. I am testing out my network interface my connecting a crossover cable from my blade to a windows box. I would like to assign an ip address of 10.0.0.2 to "bge0" and netmask of "255.0.0.0". I have typed the following:
... (1 Reply)
Hi
I'm completely new in solaris,and don't know many about it.
I was installed solaris 10 on sun blade 1500,and also I need to install oracle on it.
Now I stuck on some thing and i'm sure that you help me.
When i started Oracle installation system told me that I don't have enogh swap space.... (1 Reply)
Hello,
I'm trying to compile PHP 5.3.6 with Apache2 and MySql 5.5.12. I hit a problem that I can't seem to resolve by myself and I could not find a solution on the web.
It looks like Apache and MySql installed ok, I can start/stop them with no problem.
When I try to compile PHP the... (4 Replies)
Good afternoon all,
First, sorry for my English, this is not my first language but I try my best :).
So, here we go.
A friend of mine gave me an old Sun Blade 1500 he wasn't using. He said it was working fine except for the missing hard drive.
I had in my IT personnal box an old IDE... (33 Replies)
Hi,
I'm using Solaris 8 on a Blade 1500.
I know that IDE drives are limited to around 120GB, but I was told that it's possible to use larger drives with the only caveat that the available size will be that 120 (or is it 128?) GB size.
But when I try, format shows only very low sizes, like... (2 Replies)
Discussion started by: BobSol8
2 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)