Hey guys, I've built a new server and I'm just wondering if there is any advantage to running 64-bit versions of linux over the 32-bit versions? System Specs: 2 x AMD Opteron 265 Dual-Core Tyan S2981 Motherboard 4GB Kingston ECC Registered PC3200 40GB IDE HDD 400GB sATA HDD What sort of benefits will I get, if any?
My server Athlon 64 3200+ (2Ghz) with Debian amd64 is 20% faster then an opteron at same frequency on a 32 bits OS with the benchmark test from OVH (with 32 bits Linux). The bench is to decompress and recompress a kernel source file in the memory (/dev/shm) => http://www.webmaster-hub.com/index.php?showtopic=22971 So i guess it can be good especially with lot of RAM (more then 2GB). PS: great motherboard, i hope you have stepping E for your opterons ... *************** my results ***************** cd /dev/shm wget ftp://ftp.ovh.net/made-in-ovh/bzImage/linux-2.4.32.tar.bz2 -O linux-2.4.32.tar.bz2 bzip2 -dk linux-2.4.32.tar.bz2 DECOMPRESS TEST (1 process) for i in `seq 1 1`; do time bzip2 -d linux-2.4.32.tar.bz2 -c >> /dev/null & done => my results: real 0m11.497s (Opteron 150 = 14s) COMPRESS TEST (1 process) for i in `seq 1 1`; do time bzip2 linux-2.4.32.tar -c >> /dev/null & done => my results: real 0m47.957s (Opteron 150 = 63s) 2 processes test now: DECOMPRESS TEST (2 process) for i in `seq 1 2`; do time bzip2 -d linux-2.4.32.tar.bz2 -c >> /dev/null & done => my results: real 0m23.535s (Opteron 150 = 25s) real 0m23.528s COMPRESS TEST (2 process) for i in `seq 1 2`; do time bzip2 linux-2.4.32.tar -c >> /dev/null & done => my results: real 1m34.796s (Opteron 150 = 96s) real 1m34.967s
Thanks, Yeah, they're Stepping E. I think I'll give the Debian AMD64 (Sarge?) install a try. Cheers, Brian
Just make sure that all the software you will install on the 64bit OS will also work on it! I've got a dual 64bit system running a 32 bit OS (Debian), because some of the software I use will not install on a 64bit system.
Have a look here: http://www-128.ibm.com/developerworks/library/l-port64.html http://os.newsforge.com/article.pl?sid=05/03/30/1242206&tid=152&tid=2&tid=150&tid=74
