How many of you are running 64 bit servers?

How many of you with leased dedicated or colo dedicated servers are running 64 Bit System? I don't mean that you have 64 bit processors... I mean that you are running 64 Bit Linux.

If you are running 64 Bit.. Have you seen any speed increases that you can attribute to moving to 64 bits and more importantly... have you had any headaches or problems with your 64 bit system?

[Erwin]

Which brings me to another question - which FREE 64 OS is recommended?

Centos vs Fedora Core vs FreeBSD?

[FlyBoy73]

I am using (on my new server) CentOS.

[markA4]

We were planning on trying out the 64 bit version of CentOS on our newly ordered server but it will only be running MySQL. Is anyone actually running MySQL 5.0.19 on a 64 bit server? We are still on the 4.0.x line but are looking at whether to install 4.1.x or 5.0.x on this new server. Seems like as good a time as any to upgrade to 5.0.x.

[adalren]

We're using 64bit CentOS. The openssl benchmark says 64bit is faster. I'm not sure how it translates into real world performance. Make sure you use apc and not eaccelerator. EA segfaults on 64bit OS's.

Here are some benchmark results on Dual 3.4 Xeons with 32bit CentOS.

openssl speed rsa
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000761s 0.000065s   1313.9  15294.6
rsa 1024 bits 0.003875s 0.000189s    258.0   5286.8
rsa 2048 bits 0.022906s 0.000624s     43.7   1602.1
rsa 4096 bits 0.151818s 0.002230s      6.6    448.5

openssl speed rsa -multi 2
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000385s 0.000033s   2594.0  30536.1
rsa 1024 bits 0.001927s 0.000094s    518.9  10638.3
rsa 2048 bits 0.011458s 0.000312s     87.3   3200.0
rsa 4096 bits 0.075470s 0.001116s     13.3    896.3

openssl speed rsa -multi 4
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000304s 0.000026s   3287.5  39120.5
rsa 1024 bits 0.001524s 0.000072s    656.2  13901.2
rsa 2048 bits 0.008759s 0.000235s    114.2   4250.8
rsa 4096 bits 0.056805s 0.000825s     17.6   1212.8

Same thing with 64bit.

openssl speed rsa
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000329s 0.000027s   3035.4  36386.4
rsa 1024 bits 0.001350s 0.000069s    740.8  14437.7
rsa 2048 bits 0.007782s 0.000219s    128.5   4562.1
rsa 4096 bits 0.050812s 0.000825s     19.7   1211.7

openssl speed rsa -multi 2
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000283s 0.000024s   3530.5  42109.9
rsa 1024 bits 0.001194s 0.000062s    837.3  16260.2
rsa 2048 bits 0.006929s 0.000195s    144.3   5128.2
rsa 4096 bits 0.045611s 0.000683s     21.9   1464.1

openssl speed rsa -multi 4
                  sign    verify    sign/s verify/s
rsa  512 bits 0.000141s 0.000012s   7086.0  85568.9
rsa 1024 bits 0.000594s 0.000030s   1684.6  32786.9
rsa 2048 bits 0.003454s 0.000097s    289.5  10256.4
rsa 4096 bits 0.022761s 0.000341s     43.9   2928.8

For comparison, 32bit Dual Opteron 275.

openssl speed rsa -multi 4
rsa  512 bits 0.000149s 0.000012s   6700.3  83333.3
rsa 1024 bits 0.000559s 0.000030s   1788.2  33060.1
rsa 2048 bits 0.003125s 0.000091s    320.0  11049.7
rsa 4096 bits 0.020170s 0.000308s     49.6   3241.6

64bit Dual Opteron 275

openssl speed rsa -multi 4
rsa  512 bits 0.000074s 0.000006s  13425.6 166666.7
rsa 1024 bits 0.000279s 0.000015s   3587.7  66393.4
rsa 2048 bits 0.001566s 0.000045s    638.4  22099.8
rsa 4096 bits 0.010055s 0.000153s     99.5   6525.3

[FlyBoy73]

"Higher is Better" Well, on the right side of the results..

Thanks a lot for the results.

[Erwin]

Nice results on the dual/dual Opteron!

[Erwin]

I'm currently ordering quad opterons and dual/dual opterons and dual xeons in different combos - apparently cPanel (which I like using as it makes life easier for self-management) doesn't like 64 bit OSes - any experiences with that?

[FlyBoy73]

Erwin just voiced the question I should have posed in the opening post - this is a big concern for me as well. We are about to install WHM/cPanel on my 64 bit CentOS 4.1 OS. My server manager told me he has it running well on a lot of other servers he manages and colos (not where I colo) so I just gave the go-ahead to see how it runs on my server, though if it shows any problems I'm not going to be experimenting for good results. I'm not in a time crunch yet to get off my other servers so maybe I can contribute to some testing.

Will let you all know how that goes.

[kerplunknet]

We're using Fedora Core 4 (64-bit linux, dual Opterons, dual core) for our database server...

I don't even have the vocabulary to explain how fast it is.