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¿Ã¸®±â¿Ã·ÁÁü: 2004.1.25 ÀÏ, 12:36 am    ÁÖÁ¦: 64ºñÆ® ¹ÙÀ̳ʸ®º¸´Ù 32ºñÆ® ¹ÙÀ̳ʸ®°¡ ºü¸£´Ù? Àοë°ú ÇÔ²² ´äº¯

Tony Bourke ¾¾°¡ Å×½ºÆ®ÇÏ°í ¾ê±âÇÏ´Â °ÍÀε¥, ½ºÆÅ½Ã½ºÅÛ¿¡ ¼Ö¶ó¸®½º 9¸¦ °¡Áö°í ¸î°¡Áö¸¦ Å×½ºÆ®ÇÑ °á°ú ½ÇÁ¦·Î 64ºñÆ® ¹ÙÀ̳ʸ®º¸´Ù 32ºñÆ® ¹ÙÀ̳ʸ®°¡ ´õ ºü¸¥ °á°ú¸¦ ¾ò¾ú´Ù°í ÇÕ´Ï´Ù.

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- Sun Ultra 5
- Solaris 9 for Sparc (ÆÐÄ¡ Å©·¯½ºÅÍ Àû¿ë -> ÇöÀç±îÁöÀÇ ¸ðµç ÆÐÄ¡°¡ Àû¿ëµÊÀ» ÀǹÌÇÕ´Ï´Ù.)
- Gcc 3.3.2 (32ºñÆ®¿Í 64ºñÆ® ¹ÙÀ̳ʸ® ¸ðµÎ)
- gzip, OpenSSL, MySQL µîÀÇ ÇÁ·Î±×·¥ µé

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OpenSSL Å×½ºÆ® °á°ú (±æ¼ö·Ï ´õ ÁÁÀº ¼º´É)



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http://www.osnews.com/story.php?news_id=5768
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Conclusion

While these tests are limited in scope, and there are far more sophisticated tests that could be performed (such as raw integer and floating point), this is a start, as I haven't seen any 32-bit versus 64-bit tests out there. The lack of other benchmarks seems strange to me; perhaps I didn't look in the right places. (If you know of any published benchmarks comparing 32-bit binary performance versus 64-bit, please let me know).

Keep in mind these tests were performed on the UltraSPARC platform for Solaris 9, and while they probably would have relevance to other operating systems and platforms (such as Linux on x86-64, or FreeBSD on UltraSPARC), specific tests on those platforms would be far more revealing.

So while the tests I ran were on only a few applications and in limited ways, the results seem to show that indeed 64-bits do generally run slower. However, there are there are a few issues to consider.

One issue is that the difference in performance varies not only from application to application, but also what specific operation a given application is performing. Also, the largest disparity I was able to see was around 20%, and not the many-times-slower disparity that I've seen some claim.

Since this was a limited number of applications in limited scenarios, the best way to know for yourself is to give the applications you're concerned about a try in both modes.

In the end it's the library and compiling issues that are the most compelling reasons to stay with 32-bit binaries, and not so much performance or size. I think it's safe to say that you're not missing out by going with the simpler-to-manage 32-bit binaries, unless your application can specifically benefit from 64-bit.
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