From: roma1390 <roma1390@gmail.com>
To: Denys Vlasenko <vda.linux@googlemail.com>
Cc: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Douglas W Jones <jones@cs.uiowa.edu>,
Michal Nazarewicz <mnazarewicz@google.com>
Subject: Re: [PATCH 0/1] vsprintf: optimize decimal conversion (again)
Date: Wed, 28 Mar 2012 08:56:31 +0300 [thread overview]
Message-ID: <4F72A80F.7000801@gmail.com> (raw)
In-Reply-To: <CAK1hOcOCG19U3sZAPDSH=BYsjgDMJ0VXjcoXV4EaoL30-dTO+A@mail.gmail.com>
On 2012.03.27 18:42, Denys Vlasenko wrote:
> On Tue, Mar 27, 2012 at 2:08 PM, roma1390<roma1390@gmail.com> wrote:
>> On 2012.03.26 21:47, Denys Vlasenko wrote:
>>>
>>> Please find test programs attached.
>>>
>>> 32-bit test programs were built using gcc 4.6.2
>>> 64-bit test programs were built using gcc 4.2.1
>>> Command line: gcc --static [-m32] -O2 -Wall test_{org,new}.c
>>
>> Can't compile reference for arm:
>> $ arm-linux-gnueabi-gcc -O2 -Wall test_org.c -o test_org
>> test_org.c: In function ‘put_dec’:
>> test_org.c:101: error: impossible constraint in ‘asm’
>> test_org.c:101: error: impossible constraint in ‘asm’
>> test_org.c:101: error: impossible constraint in ‘asm’
>
> Please find a modified test_header.c attached.
> I tested and it builds in my arm emulator.
Run on same:
2.6.32-5-kirkwood #1 Tue Jan 17 05:11:52 UTC 2012 armv5tel GNU/Linux
GCC version:
gcc version 4.4.5 (Debian 4.4.5-8), Target: arm-linux-gnueabi
Compiled with:
arm-linux-gnueabi-gcc -O2 -Wall test_{org,new}.c -o test_{org,new}
run default priority on almost idle machine:
./test_org
Conversions per second: 8:4716000 123:3896000 123456:2756000 12345678:2412000
123456789:2380000 2^32:2348000 2^64:1400000
Conversions per second: 8:4556000 123:3892000 123456:2760000 12345678:2496000
123456789:2384000 2^32:2264000 2^64:1400000
Conversions per second: 8:4716000 123:3896000 123456:2664000 12345678:2496000
123456789:2388000 2^32:2348000 2^64:1400000
Conversions per second: 8:4716000 123:3892000 123456:2760000 12345678:2496000
123456789:2292000 2^32:2348000 2^64:1400000
./test_org
Conversions per second: 8:4716000 123:3748000 123456:2760000 12345678:2496000
123456789:2388000 2^32:2348000 2^64:1348000
Conversions per second: 8:4716000 123:3896000 123456:2756000 12345678:2408000
123456789:2384000 2^32:2348000 2^64:1400000
Conversions per second: 8:4540000 123:3896000 123456:2648000 12345678:2496000
123456789:2388000 2^32:2268000 2^64:1400000
Conversions per second: 8:4716000 123:3888000 123456:2664000 12345678:2496000
123456789:2388000 2^32:2344000 2^64:1400000
./test_new
Conversions per second: 8:5496000 123:4564000 123456:3536000 12345678:3408000
123456789:1168000 2^32:976000 2^64:532000
Conversions per second: 8:5524000 123:4568000 123456:3692000 12345678:3404000
123456789:1132000 2^32:972000 2^64:532000
Conversions per second: 8:5528000 123:4404000 123456:3684000 12345678:3408000
123456789:1168000 2^32:976000 2^64:516000
Conversions per second: 8:5528000 123:4568000 123456:3692000 12345678:3288000
123456789:1168000 2^32:976000 2^64:532000
./test_new
Conversions per second: 8:5524000 123:4416000 123456:3688000 12345678:3400000
123456789:1172000 2^32:972000 2^64:516000
Conversions per second: 8:5520000 123:4568000 123456:3692000 12345678:3276000
123456789:1168000 2^32:976000 2^64:532000
Conversions per second: 8:5344000 123:4552000 123456:3692000 12345678:3404000
123456789:1168000 2^32:944000 2^64:532000
Conversions per second: 8:5528000 123:4568000 123456:3556000 12345678:3404000
123456789:1168000 2^32:976000 2^64:532000
I will run the long running correctness test, and post results later. But this
can take a while...
next prev parent reply other threads:[~2012-03-28 5:56 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-26 18:47 [PATCH 0/1] vsprintf: optimize decimal conversion (again) Denys Vlasenko
2012-03-26 18:51 ` [PATCH 1/1] " Denys Vlasenko
2012-03-26 19:51 ` Andrew Morton
2012-03-26 19:56 ` Denys Vlasenko
2012-03-26 20:13 ` Andrew Morton
2012-03-26 20:18 ` Geert Uytterhoeven
2012-03-26 23:18 ` Denys Vlasenko
2012-03-27 0:30 ` Denys Vlasenko
2012-03-27 3:49 ` H. Peter Anvin
2012-03-26 20:20 ` H. Peter Anvin
2012-03-27 17:12 ` Michal Nazarewicz
2012-03-27 17:17 ` H. Peter Anvin
2012-03-27 0:26 ` Denys Vlasenko
2012-03-27 12:08 ` [PATCH 0/1] " roma1390
2012-03-27 15:32 ` Denys Vlasenko
2012-03-27 15:42 ` Denys Vlasenko
2012-03-28 5:56 ` roma1390 [this message]
2012-03-28 10:13 ` Denys Vlasenko
2012-03-28 10:24 ` roma1390
2012-03-28 10:33 ` Denys Vlasenko
2012-03-28 10:39 ` roma1390
2012-03-28 11:20 ` Denys Vlasenko
2012-03-29 10:35 ` Denys Vlasenko
2012-03-28 10:31 ` roma1390
2012-03-28 11:23 ` Denys Vlasenko
2012-03-29 5:23 ` roma1390
2012-03-29 10:33 ` Denys Vlasenko
2012-03-27 13:49 ` roma1390
2012-03-27 15:33 ` Denys Vlasenko
2012-03-29 5:16 ` roma1390
2012-03-29 10:33 ` Denys Vlasenko
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