This is the mail archive of the libc-alpha@sources.redhat.com mailing list for the glibc project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: horrible disk thorughput on itanium


I have repeated the tests on a couple of other arches,
and although TEST 4 is noticably slower than inlined putc_unlocked on IA-64,
it is still on all arches (with exception of SPARC) slower than non-inlined
putc_unlocked (even on SPARC such inlined putc is about 4 times faster than
current glibc putc).

IA-64, gcc-3.1-current

real    0m9.479s
user    0m9.469s
sys     0m0.004s

real    0m2.521s
user    0m2.515s
sys     0m0.005s

real    0m5.773s
user    0m5.765s
sys     0m0.003s

real    0m6.900s
user    0m6.886s
sys     0m0.010s

real    0m4.404s
user    0m4.395s
sys     0m0.007s

Alpha, gcc-3.1-current, -mtune=ev67

real    0m6.386s
user    0m6.380s
sys     0m0.008s

real    0m1.385s
user    0m1.378s
sys     0m0.007s

real    0m2.759s
user    0m2.754s
sys     0m0.005s

real    0m3.030s
user    0m3.021s
sys     0m0.010s

real    0m2.127s
user    0m2.124s
sys     0m0.003s

i686, gcc-3.1-current, -mcpu=i686

real    0m8.465s
user    0m8.460s
sys     0m0.010s

real    0m1.744s
user    0m1.740s
sys     0m0.000s

real    0m4.306s
user    0m4.280s
sys     0m0.020s

real    0m3.643s
user    0m3.630s
sys     0m0.010s

real    0m1.749s
user    0m1.730s
sys     0m0.010s

i686, gcc-2.96-RH, -mcpu=i686

real    0m9.559s
user    0m9.530s
sys     0m0.030s

real    0m1.876s
user    0m1.860s
sys     0m0.020s

real    0m4.706s
user    0m4.680s
sys     0m0.030s

real    0m4.315s
user    0m4.320s
sys     0m0.000s

real    0m1.883s
user    0m1.840s
sys     0m0.040s


Sparc, gcc-2.96-RH, -mcpu=ultrasparc

real    0m23.424s
user    0m23.410s
sys     0m0.010s

real    0m4.223s
user    0m4.220s
sys     0m0.010s

real    0m5.593s
user    0m5.580s
sys     0m0.010s

real    0m15.611s
user    0m15.560s
sys     0m0.050s

real    0m5.893s
user    0m5.880s
sys     0m0.010s

	Jakub


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]