Hi, i have class template,
1)can i override the copy constructor
2)can we have virtual function in class template
if not plz tel why? I tried , compile error comes for me...
Thanks
Sarwan (0 Replies)
Currently I am using the ZLIB_VERSION "1.2.3" . The memory requirement for Zlib/GZIP compression is stated as
/* The memory requirements for deflate are (in bytes):
(1 << (windowBits+2)) + (1 << (memLevel+9))
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default... (0 Replies)
is it possible to come up with a list of files that are modified before a certain number of hours only using the grep command?
ex. list files that were modified less than 10 hours ago
i've only managed to list files that were created on the same day, i can't seem to figure out how to work... (3 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
is it possible to come up with a list of files that are modified before a certain number of hours only using the... (3 Replies)
HI Team ,
I have interesting issue observed when using teradata sql assistant(14.1) and Informatica tool (9.5) versions.
I created SQL code in teradata where source count is 5000 records . I am using source and target database as teradata and trying to load using informatica tool . Its straight... (0 Replies)
I have an x86 Solaris box running 11.2 and have run into the following issue when attempting to run a package update. Has anyone else come across this issue and resolved it successfully, or am I waiting on Oracle to release other updated packages?
uname -a
SunOS <hostname> 5.11 11.2... (13 Replies)
I have a list file1 like
dog
cow
fox
cat
fish
duck
crowI want to classify the elements of file1 based on constrains applied on file2. Additionally the number of elements (words) in the each line of file2 is not fixed. This is my file2
cow cat fox dog
cow fox dog
fish crow fox dog cat ... (5 Replies)
Hello Friends
I was running Solaris 11.3 x86.
Below is my configuration to set password Constraints.
more /etc/default/passwd
MAXWEEKS=4
MINWEEKS=1
WARNWEEKS=1
PASSLENGTH=8
NAMECHECK=YES
HISTORY=4
MINDIFF=3
MINALPHA=2 (4 Replies)
Discussion started by: jebby123
4 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)