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....gmane.org/gmane.comp.lang.c%2B%2B.perfometer/37. Out of curiousity, I ran some quick tests on a AMD Athlon(TM) MP 2100+ box running Redhat linux 7.1. With the LLVM C backend and GCC 3.3 -O3, I got: $ time Output/bigfib.cbe th 50000 > /dev/null 0.800u 0.190s 0:00.99 100.0% 0+0k 0+0io 245pf+0w $ time Output/bigfib.cbe th 50000 > /dev/null 0.800u 0.190s 0:00.99 100.0% 0+0k 0+0io 245pf+0w $ time Output/bigfib.cbe th 50000 > /dev/null 0.770u 0.230s 0:00.99 101.0% 0+0k 0+0io 245pf+0w Native GCC 3.3 -O2: $ time Output/bigfib.native th 50000 > /dev/null 1.010u 0.170s 0:01.18 1...

http://bugzilla.mindrot.org/show_bug.cgi?id=105 markus at openbsd.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED ------- Additional Comments From markus at openbsd.org 2002-02-07 06:54 ------- could you please try this without scp? e.g.

...Debug+Asserts mode. For replicating it on cmake, run > > mkdir build-directory&& cd build-directory > cmake -DCMAKE_BUILD_TYPE=Debug path/to/llvm/source/root > time make -j32 > > Thanks again. Autoconf + GMake: 16: 1681.512u 189.706s 2:48.96 1107.4% 0+0k 0+0io 0pf+0w 32: 1698.817u 209.073s 2:02.88 1552.6% 0+0k 0+0io 0pf+0w CMake: 32: 1700.340u 222.174s 1:38.27 1956.3% 0+0k 0+0io 0pf+0w -- John T.

Maybe this is just noise... but I can reproduce this fairly reliably. Mailbox with 21,000+ messages This query: a UID SORT RETURN (ALL COUNT) (DATE) UTF-8 SUBJECT "foo" is always about 10 percent slower than this split query (I've done this 4-5 times, and the numbers are similar): a UID SEARCH RETURN (SAVE) CHARSET UTF-8 SUBJECT "foo" b UID SORT RETURN (ALL COUNT)

...iuc.edu/testresults/X86/ > GCC is reported to be quicker on > Benchmarks/Shootout-C++/ackermann test. This test seems PARTICULARLY noisy for some reason. Take a look at this: [zion Shootout-C++]$ time Output/ackermann.native Ack(3,12): 32765 3.130u 0.010s 0:03.14 100.0% 0+0k 0+0io 196pf+0w [zion Shootout-C++]$ time Output/ackermann.native Ack(3,12): 32765 3.280u 0.000s 0:03.28 100.0% 0+0k 0+0io 196pf+0w [zion Shootout-C++]$ time Output/ackermann.native Ack(3,12): 32765 3.210u 0.000s 0:03.21 100.0% 0+0k 0+0io 196pf+0w [zion Shootout-C++]$ time Output/ackermann.native Ack(3,12):...

...ew 32 core machine, so I ran some numbers. These results are for compiling all of LLVM and Clang in a Debug build from scratch. The first number is the -j argument to make, and the rest is the result of the bash builtin time command. 2: 1612.950u 161.293s 15:04.92 196.0% 0+0k 0+0io 0pf+0w 4: 1624.101u 164.121s 8:00.74 371.9% 0+0k 0+0io 0pf+0w 8: 1657.272u 176.211s 4:35.31 665.9% 0+0k 0+0io 0pf+0w 16: 1681.512u 189.706s 2:48.96 1107.4% 0+0k 0+0io 0pf+0w 32: 1698.817u 209.073s 2:02.88 1552.6% 0+0k 0+0io 0pf+0w The processors are Intel(R) Xeon(R) CPU E...

Hi all i took a look into LLVM benchmarks from nightly tester and ran Shootout tests on my own. Below go just few outlines. 1. results on my AMD AthlonXP and Xeon used by LLVM team are different sometime. In particular, both Shootout and Shootout-C++ show great speed up with LLVM (in comparison to GCC) on ackerman test on my AthlonXP. But here:

Am 01.11.2011 18:04, schrieb Joerg Sonnenberger: > On Tue, Nov 01, 2011 at 11:09:41AM +0100, Joachim Durchholz wrote: >> On the reasons why make-based builds are slow, Peter Miller has some >> insight to offer: >> http://miller.emu.id.au/pmiller/books/rmch/ . >> I'm not sure how widely recognized that paper is. Maybe it's widely >> known and today's

Hello John. John Criswell <criswell at illinois.edu> writes: [snip] > I did not use CMake but the standard autoconf + Makefile build. > > Not sure if this helps, but here it is, for what it's worth. Very interesting, thanks! CMake introduces more parallelism and it would be great to see how much impact it makes. If you can, please run the cmake build with -j32, just to

...is turned on, but our random data defeats it. $ btrfs subvolume create src $ time dd if=/dev/urandom of=src/10gb bs=4k count=2621440 conv=notrunc 2621440+0 records in 2621440+0 records out 10737418240 bytes (11 GB) copied, 811.427 s, 13.2 MB/s 0.400u 806.115s 13:31.42 99.3% 0+0k 0+20971520io 0pf+0w $ df -h . Filesystem Size Used Avail Use% Mounted on /dev/mapper/jobarchive-Ajobarchivetest2 300G 11G 283G 4% /vol/jobarchive_Ajobarchivetest2 ## 3) Create a second subvolume called current. Copy the first file into it. $ btrfs subvolume create current $ ti...

...ller datasets, having only read in the raw data: ============ # Dumped an ascii image save.image(file='test', ascii=TRUE) # At the shell prompt: ls -l test -rw-rw-r--. 1 swmorris swmorris 1794473126 Jan 14 17:33 test time bzip2 -9 test 364.702u 3.148s 6:14.01 98.3% 0+0k 48+1273976io 1pf+0w time pbzip2 -9 test 422.080u 18.708s 0:11.49 3836.2% 0+0k 0+1274176io 0pf+0w ============ As you can see, bzip2 on its own took over 6 minutes whereas pbzip2 took 11 seconds, admittedly on a 64 core machine (running at 50% load). Most modern machines are multicore so everyone would get some spe...

...slower, but as I increase the input value, fib381 gets slower and slower in run-time performance (almost 200X for an input value of 40). Any hints on what could be going wrong? TIA. % time fib34 30 ... starting fibonacci(30) with JIT... Result: 832040 0.008u 0.000s 0:00.01 0.0% 0+0k 0+0io 0pf+0w % time fib34 40 ... starting fibonacci(40) with JIT... Result: 102334155 0.427u 0.003s 0:00.44 95.4% 0+0k 0+0io 0pf+0w % time fib381 30 ... starting fibonacci(30) with JIT... Result: 832040 0.795u 0.001s 0:00.81 97.5% 0+0k 0+0io 0pf+0w % time fib381 40 ... starting fibonacci(40) with JIT....

Hi, I would like to use LLVM-GCC to compare its performance with other compilers. Something like testsuite "Computing very large Fibonacci numbers" at http://article.gmane.org/gmane.comp.lang.c%2B%2B.perfometer/37. My environment: ----------------- Windows 2000 Cygwin $ uname -srom CYGWIN_NT-5.0 1.5.11(0.116/4/2) i686 Cygwin ----------------- What do I have to download from

...\0\0\0\0\0*\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 64}, {"E\0v\0e\0r\0e\0s\0t\0 \0D\0i\0c\0t\0i\0o\0n\0a\0r\0y\0 \0S\0e\0t\0u\0p\0 \0i\0s\0 \0p\0r\0e\0p\0a\0r\0i\0n\0g\0 \0t\0h\0e\0 \0I\0n\0s\0t\0a\0l\0l\0S\0h\0i\0e\0l\0d\0 \0W\0i\0z\0a\0r\0d\0,\0 \0w\0h\0i\0c\0h\0 \0w\0i\0l\0l\0 \0g\0u\0i\0d\0e\0 \0y\0o\0u\0 \0t\0h\0r\0o\0u\0g\0h\0 \0t\0h\0e\0 \0p\0r\0o\0g\0r\0a\0m\0 \0s\0e\0t\0u\0p\0 \0p\0r\0o\0c\0e\0s\0s\0.\0 \0 \0P\0l\0e\0a\0s\0e\0 \0w\0a\0i\0t\0.\0", 266}], 2) = 330 [pid 16929] read(5, "\0\0\0\0\0\0\0\0\0\0...

...ng for C++ include memory - found -- LLVM llvm-config found at: /steffan/a/a0/czhao/opt/opt32/llvm-2.8r/bin/llvm-config -- Configuring done -- Generating done -- Build files have been written to: /steffan/a/a0/czhao/ResearchTools/LLVM/LLBrowse/obj 1.976u 2.100s 0:14.37 28.3% 0+0k 48680+2392io 174pf+0w sideshow.eecg>time make [ 5%] Converting PNG image file resources/icons/folder.png [ 11%] Converting PNG image file resources/icons/collapse.png [ 16%] Converting PNG image file resources/icons/typeref.png [ 22%] Converting PNG image file resources/icons/expand.png [ 27%] Converting PNG image f...

...ped out all the lines beginning in '#' and multiple empty lines. It's about 75k lines of code. On a Mac Pro, the unix 'time' command says it's using 249 seconds of user time. Wall time on my machine somewhere around 5 minutes? 249.035u 1.883s 4:12.44 99.3% 0+0k 0+2io 0pf+0w CLang version: clang version 3.1 (trunk 146659) Target: x86_64-apple-darwin10.8.0 Thread model: posix I built this CLang myself from the svn source a few weeks back -- I compiled it with gcc, and then re-compiled it with itself. This is just one example. GCC compiles all of ITK and VTK in aroun...

...asons why this seemingly-innocuous (though stupid-looking) excerpt from gnu fileutils 4.1 would make llvm-gcc go so incredibly slowly? It doesn't seem to be a question of the size of the output. Here's what I do: % time llvm-gcc -c sha24.c 56.840u 0.050s 1:07.05 84.8% 0+0k 0+0io 1050pf+0w % ls -l sha24.o -rw-r--r-- 1 brg brg 5784 2002-12-14 07:43 sha24.o The problem goes away if I use -S: % time llvm-gcc -S sha24.c 0.060u 0.010s 0:00.09 77.7% 0+0k 0+0io 548pf+0w -- gaeke at uiuc.edu -------------- next part -------------- struct sha_ctx { unsigned int A;...

...7\325\n\311\0\35\3G\3G\1w\1w\3*\10"..., 8192, 73728) = 8192 [pid 27922] pread64(13, "\0\0\0\2\0\17\376\17\376\0\17\30\10\20\r\17\342\0170\n\236\0\35\4\3\1w\1w\3\346\10"..., 8192, 565248) = 8192 [pid 27922] pread64(13, "\0\0\0\3\0\17\371\17\371\0\21\37\325\27\360\20\n\10\17\7\345\0W\0W\1w\1w\3\346\10"..., 8192, 106496) = 8192 [pid 27922] pread64(13, "\0\0\0\3\0\17\320\17\320\0\21\30\5\27\333\17\341\1\204\0b\0b\0W\1w\1w\3\346\10"..., 8192, 163840) = 8192 [pid 27922] pread64(13, "\0\0\0\3\0\17\350\17\350\0\21\30\5\27\353\17\371\2\351\0)\0)\0W\1w\1w\3\346\10&q...

...-- LLVM llvm-config found at: > /steffan/a/a0/czhao/opt/opt32/llvm-2.8r/bin/llvm-config > -- Configuring done > -- Generating done > -- Build files have been written to: > /steffan/a/a0/czhao/ResearchTools/LLVM/LLBrowse/obj > 1.976u 2.100s 0:14.37 28.3% 0+0k 48680+2392io 174pf+0w > sideshow.eecg>time make > [ 5%] Converting PNG image file resources/icons/folder.png > [ 11%] Converting PNG image file resources/icons/collapse.png > [ 16%] Converting PNG image file resources/icons/typeref.png > [ 22%] Converting PNG image file resources/icons/expand.png >...

[Moved from -current to -stable] ???????? 21 ???????? 2006 16:23, Matthew Dillon ?? ????????: > ? ? You might be doing just writes to the mmap()'d memory, but the system > ? ? doesn't know that. Actually, it does. The program tells it, that I don't care to read, what's currently there, by specifying the PROT_READ flag only. > ? ? The moment you touch any mmap()'d