Top Document: comp.compression Frequently Asked Questions (part 1/3)
Previous Document: [4] What is an archiver?
Next Document: [7] Which books should I read?
See reader questions & answers on this topic! - Help others by sharing your knowledge
The answer is: it depends. (You did not expect a definitive answer, did you?) It depends whether you favor speed, compression ratio, a standard and widely used archive format, the number of features, etc... Just as for text editors, personal taste plays an important role. compress has 4 options, arj 2.30 has about 130 options; different people like different programs. *Please* do not start or continue flame wars on such matters of taste. Several benchmarks of MSDOS archivers are available: - ftp://ftp.simtel.net/pub/simtelnet/msdos/arcers/actest*.zip and http://www.geocities.com/SiliconValley/Park/4264/act.html by Jeff Gilchrist <jeffg@cips.ca> - ftp://garbo.uwasa.fi/pc/arcers/ by Jonathan Burt <jonathan@jaburt.demon.co.uk> Please do not post your own benchmarks made on your own files that nobody else can access. If you think that you must absolutely post yet another benchmark, make sure that your test files are available by anonymous ftp. Since all other benchmarks are for MSDOS only, here is one mainly for Unix, on a 33Mhz Compaq 386. All programs have been run on Unix SVR4, except pkzip and arj which only run on MSDOS. The programs compared here were chosen because they are the most popular or because they run on Unix and source is available. For ftp information, see above. Three programs (hpack, comp-2 and ha) have been added because they achieve better compression (at the expense of speed) and one program (lzrw3-a) has been added because it favors speed at the expense of compression: - comp-2 is in ftp://ftp.coast.net/pub/Coast/disk2/msdos/ddjmag/ (inner zip file nelson.zip), - hpack is in ftp://garbo.uwasa.fi/unix/arcers/ - ha 0.98 is in ftp://garbo.uwasa.fi/pc/arcers/ - lzrw3-a is in http://wwwvms.utexas.edu/~cbloom/src/lzrw.zip The 14 files used in the comparison are from the standard Calgary Text Compression Corpus, available in ftp://ftp.cpsc.ucalgary.ca/pub/projects/text.compression.corpus/ The whole corpus includes 18 files, but the 4 files paper[3-6] are generally omitted in benchmarks. It contains several kinds of file (ascii, binary, image, etc...) but has a bias towards large files. You may well get different ratings on the typical mix of files that you use daily, so keep in mind that the comparisons given below are only indicative. The programs are ordered by decreasing total compressed size. For a fair comparison between archivers and other programs, this size is only the size of the compressed data, not the archive size. The programs were run on an idle machine, so the elapsed time is significant and can be used to compare Unix and MSDOS programs. [Note: These benchmarks are now *very* old. I have to do them again on more recent hardware with the latest programs. For recent results on MSDOS, check http://www.geocities.com/SiliconValley/Park/4264/act.html ] size lzrw3a compress lharc yabba pkzip freeze version: 4.0 1.02 1.0 1.10 2.3.5 options: -m300000 ------ ----- ------ ------ ------ ------ ------ bib 111261 49040 46528 46502 40456 41354 41515 book1 768771 416131 332056 369479 306813 350560 344793 book2 610856 274371 250759 252540 229851 232589 230861 geo 102400 84214 77777 70955 76695 76172 68626 news 377109 191291 182121 166048 168287 157326 155783 obj1 21504 12647 14048 10748 13859 10546 10453 obj2 246814 108040 128659 90848 114323 90130 85500 paper1 53161 24522 25077 21748 22453 20041 20021 paper2 82199 39479 36161 35275 32733 32867 32693 pic 513216 111000 62215 61394 65377 63805 53291 progc 39611 17919 19143 15399 17064 14164 14143 progl 71646 24358 27148 18760 23512 17255 17064 progp 49379 16801 19209 12792 16617 11877 11686 trans 93695 30292 38240 28092 31300 23135 22861 3,141,622 1,400,105 1,259,141 1,200,580 1,159,340 1,141,821 1,109,290 real 0m35s 0m59s 5m03s 2m40s 5m27s user 0m25s 0m29s 4m29s 1m46s 4m58s sys 0m05s 0m10s 0m07s 0m18s 0m08s MSDOS: 1m39s zoo lha arj pkzip zip hpack comp-2 ha 2.10 1.0(Unix) 2.30 2.04g 1.9 0.75a 0.98 ah 2.13(MSDOS) -jm -ex -6 a2 ------ ------ ------ ------ ------- ------ ------ ------ bib 40742 40740 36090 35126 34950 35619 29840 26927 book1 339076 339074 318382 312490 312619 306876 237380 235733 book2 228444 228442 210521 206513 206306 208486 174085 163535 geo 68576 68574 69209 68706 68418 58976 64590 59356 news 155086 155084 146855 144545 144395 141608 128047 123335 obj1 10312 10310 10333 10306 10295 10572 10819 9799 obj2 84983 84981 82052 81132 81336 80806 85465 80381 paper1 19678 19676 18710 18531 18525 18607 16895 15675 paper2 32098 32096 30034 29568 29674 29825 25453 23956 pic 52223 52221 53578 52409 55051 51778 55461 51639 progc 13943 13941 13408 13341 13238 13475 12896 11795 progl 16916 16914 16408 16122 16175 16586 17354 15298 progp 11509 11507 11308 11200 11182 11647 11668 10498 trans 22580 22578 20046 19462 18879 20506 21023 17927 1,096,166 1,096,138 1,036,934 1,019,451 1,021,043 1,005,367 890,976 845,854 real 4m07s 6m03s 1m49s 1h22m17s 27m05s user 3m47s 4m23s 1m43s 1h20m46s 19m27s sys 0m04s 0m08s 0m02s 0m12s 2m03s MSDOS: 1m49s 2m41s 1m43s 14m43s Notes: - the compressed data for 'zoo ah' is always two bytes longer than for lha. This is simply because both programs are derived from the same source (ar002, written by Haruhiko Okumura, available by ftp in ftp://ftp.simtel.net/pub/simtelnet/msdos/arcers/ar002.zip). - hpack 0.75a gives slightly different results on SunOS. (To be checked with latest version of hpack). - the MSDOS versions are all optimized with assembler code and were run on a RAM disk. So it is not surprising that they often go faster than their Unix equivalent.
User Contributions:
The Major Advantages of uniform dating
online dating services is not a newest platform but it has taken a sudden rise after the advancement in the technologies. This has revolutionised the way singles meet. With many struggles of dating in today sphere, More people these days are turning their heads towards the internet.
Even for arranged your marriage, Older dating and stuff like that, People are changing themselves and adopting the platform with all open heart and mind. Beside several advantages these platforms possess, Location and religion are the factors that set it apart. You can find your life partner from everywhere and out of any religion. These religions and castes barely matters when it comes to online dating sites.
really fast, Easy and convenient: At the first, Dating platforms might seem to be a daunting process, [url=https://charmdatescamreviews.wordpress.com/2018/03/19/charmdate-review-why-should-i-date-ukrainian-girls-how-charmdate-protects-me/]online dating ukraine[/url] But in real it is a simple and efficient process to register and connect with people all around the globe. The only thing you need to do is creating an eye catchy and appealing profile mentioning all needed details about you, Your hobbies and your fascinates. Its speedy and convenient access makes it a must have platform for those busy corporate out there.
Less pressing: This is one of the best platforms especially for the people who are shy or nervous as they can connect with people they find interesting via chats unless they get familiar enough with them to either have a verbal talk or start with dating in person. It gives you relaxed atmosphere, Where you can take out efficient time to think to understand and what you want to say to proceed ahead with the conversation.
Meet lots more people: This platform gives user a numerous choices to select from and also it is possible that you can connect with many people altogether and you can find sometimes a person who can be a great friend and a person who can be eligible to be your partner in the future time. This platform will allow you to pick the best one out of many with whom you think you can share your interests with.
add on a Deeper Level: This online site help you know a person back to front. The only appearance you have of your mate is his profile picture, Else you have to know it with the help of the chat you have with him. this can help you evaluate a person behind his face, numerous experts judge who these persons are truly are. Such dating platforms leave you unbiased to be love someone you share similar interests with.
Full Disclosure: The online dating sites allow you to specify whatever is your expectation and intention, Right right from the start so that you can find people looking for the same things and interests as of yours. The major benefit of all such platform is that it helps preventing misunderstandings and disappointments.
fee: Last but not the cheapest, Cost saving is the most appealing benefit of online dating because real life dates are expensive. You need to hangout with your partner every weekend and you further have to spend money either on food or night-life or both.
These platforms therefore gives you enable you to get to know the person well in advance through these online portals and thereafter you should spend money on real dates. different, On the very first meet even you must spend money with no surety that you will like the person as a partner or not.
online dating services is not a newest platform but it has taken a sudden rise after the advancement in the technologies. This has revolutionised the way singles meet. With many struggles of dating in today sphere, More people these days are turning their heads towards the internet.
Even for arranged your marriage, Older dating and stuff like that, People are changing themselves and adopting the platform with all open heart and mind. Beside several advantages these platforms possess, Location and religion are the factors that set it apart. You can find your life partner from everywhere and out of any religion. These religions and castes barely matters when it comes to online dating sites.
really fast, Easy and convenient: At the first, Dating platforms might seem to be a daunting process, [url=https://charmdatescamreviews.wordpress.com/2018/03/19/charmdate-review-why-should-i-date-ukrainian-girls-how-charmdate-protects-me/]online dating ukraine[/url] But in real it is a simple and efficient process to register and connect with people all around the globe. The only thing you need to do is creating an eye catchy and appealing profile mentioning all needed details about you, Your hobbies and your fascinates. Its speedy and convenient access makes it a must have platform for those busy corporate out there.
Less pressing: This is one of the best platforms especially for the people who are shy or nervous as they can connect with people they find interesting via chats unless they get familiar enough with them to either have a verbal talk or start with dating in person. It gives you relaxed atmosphere, Where you can take out efficient time to think to understand and what you want to say to proceed ahead with the conversation.
Meet lots more people: This platform gives user a numerous choices to select from and also it is possible that you can connect with many people altogether and you can find sometimes a person who can be a great friend and a person who can be eligible to be your partner in the future time. This platform will allow you to pick the best one out of many with whom you think you can share your interests with.
add on a Deeper Level: This online site help you know a person back to front. The only appearance you have of your mate is his profile picture, Else you have to know it with the help of the chat you have with him. this can help you evaluate a person behind his face, numerous experts judge who these persons are truly are. Such dating platforms leave you unbiased to be love someone you share similar interests with.
Full Disclosure: The online dating sites allow you to specify whatever is your expectation and intention, Right right from the start so that you can find people looking for the same things and interests as of yours. The major benefit of all such platform is that it helps preventing misunderstandings and disappointments.
fee: Last but not the cheapest, Cost saving is the most appealing benefit of online dating because real life dates are expensive. You need to hangout with your partner every weekend and you further have to spend money either on food or night-life or both.
These platforms therefore gives you enable you to get to know the person well in advance through these online portals and thereafter you should spend money on real dates. different, On the very first meet even you must spend money with no surety that you will like the person as a partner or not.
hallo baby.. my name Mary!
Do you want to see a beautiful female body? Here are my erotic photos - tinyurl.com/yhtxq5lg
Do you want to see a beautiful female body? Here are my erotic photos - tinyurl.com/yhtxq5lg
I can agree with Judyhb in this topic. Her name may really be Evelyn, but she choosed another nickname out of shame. Kind of sad, Evelyn is a nice name..
Also, I want sex! Don't have any photos though :/
Also, I want sex! Don't have any photos though :/
How Are You
Hello, I wish for to subscribe for this webpage to get most recent updates, thus where can i do it please help out.
https://cutt.ly/x55XjOQ
Best Regards
Hello, I wish for to subscribe for this webpage to get most recent updates, thus where can i do it please help out.
https://cutt.ly/x55XjOQ
Best Regards
hallo baby! Im looking a lover!
If you want to meet me, I'm here - is.gd/CZZI2g
If you want to meet me, I'm here - is.gd/CZZI2g
Matt Mahoney is the trashcan matt or trashcan man. "MY LIFE FOR YOU FLAGG!". We will do the FAGGY PANTS and follow it up with RLE. A close second is Albert Reddit's GAY GZIP, or GAY ZIP, or simply ARZ. We do the faggy pants and it go like this and like that and do the RLE and there we are.
re LeDoprano:
nice to see another human around here!
nice to see another human around here!
The Internet has deceased.The Internet was never meant for humans.
Comment about this article, ask questions, or add new information about this topic:
Top Document: comp.compression Frequently Asked Questions (part 1/3)
Previous Document: [4] What is an archiver?
Next Document: [7] Which books should I read?
Part1 - Part2 - Part3 - Single Page
[ Usenet FAQs | Web FAQs | Documents | RFC Index ]
Send corrections/additions to the FAQ Maintainer:
jloup@gzip.OmitThis.org
Last Update March 27 2014 @ 02:11 PM