Re: [coLinux-devel] Slow performance.

[<Use...@zo...>]

of...@wa...(?scar Fuentes)  22.03.08 01:01

Once upon a time "?scar Fuentes " shaped the electrons to say...

>?scar Fuentes <of...@wa...> writes:

>> But I expect the same from the gcc testsuite, for
>> instance, as it is very similar. Compiling is slower too. It is a
>> C++ project and is compiled with g++ 4.1.2 in VMWare (80 seconds)
>> and 4.1.3 in coLinux (124 seconds).

always exactly 50% "plus".


>This is a another good test case:

>Building GNU Make from

>http://ftp.gnu.org/pub/gnu/make/make-3.81.tar.gz

#mkdir bench
#cd bench
#wget http://ftp.gnu.org/pub/gnu/make/make-3.81.tar.gz
#tar xzf make-3.81.tar.gz
#cd make-3.81
#time ./configure
<...
<real    0m46.911s
<user    0m10.410s
<sys     0m28.630s
#time make

<real    0m15.610s (validated with manual stopwatch)
<user    0m10.150s
<sys     0m5.240s

#time make
<...
<real    0m0.340s
<user    0m0.220s
sys     0m0.090s

second try:
real    0m43.181s
user    0m10.270s
sys     0m31.700s

real    0m16.280s
user    0m10.680s
sys     0m5.570s




CPU:
cat /proc/cpuinfo

vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : Intel(R) Pentium(R) M processor 1.60GHz
stepping        : 8
cpu MHz         : 1596.000
cache size      : 2048 KB
bogomips        : 104.65
clflush size    : 64

colinux:~/work/bench/make-3.81# free
total       used       free     shared    buffers     cached
Mem:        125944      88200      37744          0       7172    52172
-/+ buffers/cache:      28856      97088
Swap:       524280          0     524280
                


#uname -a
Linux colinux 2.6.22.18-co-0.8.0 #1 PREEMPT Fri Mar 14 05:23:51 UTC 2008 i686
GNU/Linux

# cat  /etc/issue
Debian GNU/Linux 4.0 \n \l

# gcc --version
gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)



##########################################

native CPU debian (dynamically throttled 2,1GHz Dual core AMD CPU):

uname -a
Linux vdr 2.6.23x2 #2 SMP PREEMPT Sat Oct 20 03:08:47 CEST 2007 i686 GNU/Linux

vdr:~/work/bench/make-3.81# gcc --version
gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)

configure:
real    0m19.401s
user    0m10.430s
sys     0m7.220s

make:
real    0m9.315s
user    0m8.510s
sys     0m0.680s


vdr:~/work/bench/make-3.81# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 107
model name      : AMD Athlon(tm) X2 Dual Core Processor BE-2350
stepping        : 1
cpu MHz         : 1000.000
cache size      : 512 KB
bogomips        : 2010.75


###########################
Virtual Box:

configure
real    0m31.718s
user    0m11.001s
sys     0m17.721s

make:
real    0m11.393s
user    0m8.489s
sys     0m2.424s


ubuntu 7.10 (With running)xwindows
~/bench/make-3.81# uname -a
Linux zoc-desktop 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686
GNU/Linux

~/bench/make-3.81# free
             total       used       free     shared    buffers     cached
Mem:        527644     447596      80048          0      22424     305236
-/+ buffers/cache:     119936     407708
Swap:       409616      34664     374952

~/bench/make-3.81# cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : Intel(R) Pentium(R) M processor 1.60GHz
stepping        : 8
cpu MHz         : 1595.741
cache size      : 2048 KB
bogomips        : 3229.85
clflush size    : 64

# cat /etc/issue
Ubuntu 7.10 \n \l

>           coLinux          VMWare
>configure: 42.2 seconds     18.7 seconds
>make     : 15.1 seconds      8.5 seconds


>As mentioned on my previous message, VMWare is 6.0.0 with Debian etch
>as guest OS, gcc 4.1.2. coLinux is 0.7.1 with Ubuntu Gutsy, gcc 4.1.3.


So i got the same results:
-Colinux is the slowest.
-VirtualPC third
-VMware second (not tested here as too much overhead and too deep manipulations of OS)
-Native fastest (surprise, surprise ;-))


(I wonder why "bogomips" are only 100 on colinux, bogo...)