cat /proc/cpuinfo 
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 13
model name	: Intel(R) Pentium(R) M processor 1.70GHz
stepping	: 6
cpu MHz		: 1700.000
cache size	: 2048 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr mce cx8 sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe up bts est tm2
bogomips	: 3400.03
clflush size	: 64
power management:





----------------------------------------------------------------------
| Sage Version 4.6.2, Release Date: 2011-02-25                       |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------
Loading Sage library. Current Mercurial branch is: test
sage: giac(2)
2
sage: R=PolynomialRing(QQ,x,5)
sage: t=sum(R.gens())
sage: gt=giac(str(t))
sage: w=walltime();cpug=giac.cputime();walltime(w)
0.010565042495727539
sage: w=walltime();cpug=giac.cputime();ez=(gt^15).normal();giac.cputime()-cpug;walltime(w)
0.11
0.13365697860717773
sage: w=walltime();cpus=cputime();z=(t^15);cputime()-cpus;walltime(w)
0.01600099999999971
0.016294956207275391
sage: 
sage: 
sage: R=PolynomialRing(QQ,x,3)
sage: t=sum(R.gens())
sage: n=17;
sage: w=walltime();cpug=giac.cputime();ez=(giac(t+1)^n+1).normal();giac.cputime()-cpug;walltime(w)
0.020000000000000004
0.088516950607299805
sage: w=walltime();cpus=cputime();z=((t+1)^n+1);cputime()-cpus;walltime(w)
0.0080009999999997028
0.0069608688354492188
sage: w=walltime();cpug=giac.cputime();f1=(ez*(ez+1)).normal();giac.cputime()-cpug;walltime(w)
0.52000000000000002
0.54698395729064941
sage: w=walltime();cpus=cputime();f2=(z*(z+1));cputime()-cpus;walltime(w)
0.80404999999999971
0.80568480491638184
sage: w=walltime();cpug=giac.cputime();l1=f1.factor();giac.cputime()-cpug;walltime(w)
0.99999999999999989
1.0280818939208984
sage: w=walltime();cpus=cputime();l2=f2.factor();cputime()-cpus;walltime(w)
19.905244000000003
20.015537977218628
sage: 
sage: 
sage: 
sage: R=PolynomialRing(QQ,x,4)
sage: t=sum(R.gens())
sage: n=17;
sage: w=walltime();cpug=giac.cputime();ez=(giac(t+1)^n+1).normal();giac.cputime()-cpug;walltime(w)
0.040000000000000036
0.084957122802734375
sage: w=walltime();cpus=cputime();z=((t+1)^n+1);cputime()-cpus;walltime(w)
0.012001000000001483
0.014012813568115234
sage: w=walltime();cpug=giac.cputime();f1=(ez*(ez+1)).normal();giac.cputime()-cpug;walltime(w)
2.9399999999999999
2.9736530780792236
sage: w=walltime();cpus=cputime();f2=(z*(z+1));cputime()-cpus;walltime(w)
38.154383999999993
38.293603897094727
sage: 
sage: 
sage: 
sage: 
sage: n=10;
sage: w=walltime();cpug=giac.cputime();ez=(giac(t+1)^n+1).normal();giac.cputime()-cpug;walltime(w)
0.030000000000000249
0.081470012664794922
sage: w=walltime();cpus=cputime();z=((t+1)^n+1);cputime()-cpus;walltime(w)
0.0040000000000048885
0.0019900798797607422
sage: w=walltime();cpug=giac.cputime();f1=(ez*(ez+1)).normal();giac.cputime()-cpug;walltime(w)
0.22999999999999954
0.2736508846282959
sage: w=walltime();cpus=cputime();f2=(z*(z+1));cputime()-cpus;walltime(w)
0.31201899999999938
0.34183406829833984
sage: w=walltime();cpug=giac.cputime();l1=f1.factor();giac.cputime()-cpug;walltime(w)
1.0200000000000005
1.0429329872131348
sage: w=walltime();cpus=cputime();l2=f2.factor();cputime()-cpus;walltime(w)
3.8082379999999958
3.8427610397338867
sage: 
sage: 
sage: 
sage: R=PolynomialRing(QQ,x,5)
sage: t=sum(R.gens())
sage: n=10;
sage: w=walltime();cpug=giac.cputime();ez=(giac(t+2)^n+3).normal();giac.cputime()-cpug;walltime(w)
0.019999999999999574
0.068176031112670898
sage: w=walltime();cpus=cputime();z=((t+2)^n+3);cputime()-cpus;walltime(w)
0.0040010000000023638
0.013809919357299805
sage: w=walltime();cpug=giac.cputime();f1=(ez*(ez+1)).normal();giac.cputime()-cpug;walltime(w)
1.2400000000000002
1.2830979824066162
sage: w=walltime();cpus=cputime();f2=(z*(z+1));cputime()-cpus;walltime(w)
7.544471999999999
7.6055309772491455
sage: 
sage: w=walltime();cpug=giac.cputime();l1=f1.factors();giac.cputime()-cpug;walltime(w)
8.1799999999999997
8.3231899738311768
sage: w=walltime();cpus=cputime();l2=f2.factor();cputime()-cpus;walltime(w)
116.79929899999999
118.21226906776428
sage: 
sage: 
sage: