Legacy ImageMagick Discussions Archive

I have a question in the efficiency of imagemagick between the system precomiled rpm package and the version established from source code . Same system , rhel 5, x86_64. can anyone help me ?

My file size
4.0K ./107.gif

SERVER A, the Imagemagick version: ImagImageMagick-6.2.8.0-4.rpm

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[root@SERVERA]# time convert 107.gif -resize 100 100.gif

real    0m0.676s
user    0m0.667s
sys     0m0.009s

SERVER B , the Imagemagick version ImageMagick-6.7.1-0.tar.gz .

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[root@SERVERB]# time convert 107.gif -resize 100 100.gif

real    0m2.724s
user    0m12.075s
sys     0m1.294s

Then ,i replaced the SERVERB 's imagemagick with ImageMagick-6.2.8.0-4.el5_1.1.rpm

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[root@SERVERB]# time convert 107.gif -resize 100 100.gif

real    0m0.981s
user    0m0.968s
sys     0m0.014s

My compile option
./configure && make && make install

On SERVERB, i reinstall the imagicmagic under the /opt dir(./configure --prefix=/opt --with-quantum-depth=16 --disable-dependency-tracking --with-x=yes --without-perl ), when i strace the convert,
i got

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30217 execve("/opt/bin/convert", ["/opt/bin/convert", "107.gif", "-resize", "101", "2e.gif"], [/* 23 vars */]) = 0
30217 brk(0)                            = 0x7ba000
30217 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b7c527ec000
30217 uname({sys="Linux", node="smscp", ...}) = 0
30217 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/tls/x86_64/libMagick.so.10", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 stat("/opt/lib/tls/x86_64", 0x7fff582ba060) = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/tls/libMagick.so.10", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 stat("/opt/lib/tls", 0x7fff582ba060) = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/x86_64/libMagick.so.10", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 stat("/opt/lib/x86_64", 0x7fff582ba060) = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/libMagick.so.10", O_RDONLY) = 3
30217 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\252\1\0\0\0\0\0"..., 832) = 832
30217 fstat(3, {st_mode=S_IFREG|0755, st_size=3223353, ...}) = 0
30217 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b7c527ed000
30217 mmap(NULL, 3235720, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b7c527ee000
30217 mprotect(0x2b7c528fa000, 2097152, PROT_NONE) = 0
30217 mmap(0x2b7c52afa000, 40960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10c000) = 0x2b7c52afa000
30217 close(3)                          = 0
30217 open("/opt/lib/libWand.so.10", O_RDONLY) = 3
30217 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360?\1\0\0\0\0\0"..., 832) = 832
30217 fstat(3, {st_mode=S_IFREG|0755, st_size=1358187, ...}) = 0
30217 mmap(NULL, 2706392, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b7c52b04000
30217 mprotect(0x2b7c52b96000, 2097152, PROT_NONE) = 0
30217 mmap(0x2b7c52d96000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x92000) = 0x2b7c52d96000
30217 close(3)                          = 0
30217 open("/opt/lib/libjpeg.so.62", O_RDONLY) = -1 ENOENT (No such file or directory)

ON SERVERA,the rpm version ,
starce result,i got

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18373 execve("/usr/bin/convert", ["convert", "107.gif", "-resize", "101", "2.gif"], [/* 21 vars */]) = 0
18373 brk(0)                            = 0x610d000
18373 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2af3abaa4000
18373 uname({sys="Linux", node="smscp", ...}) = 0
18373 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
18373 open("/etc/ld.so.cache", O_RDONLY) = 3
18373 fstat(3, {st_mode=S_IFREG|0644, st_size=74331, ...}) = 0
18373 mmap(NULL, 74331, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2af3abaa5000
18373 close(3)                          = 0
18373 open("/usr/lib64/libMagick.so.10", O_RDONLY) = 3
18373 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220\225\302\2144\0\0\0"..., 832) = 832
18373 fstat(3, {st_mode=S_IFREG|0755, st_size=1791992, ...}) = 0
18373 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2af3abab8000
18373 mmap(0x348cc00000, 3985032, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x348cc00000
18373 mprotect(0x348cd69000, 2093056, PROT_NONE) = 0
18373 mmap(0x348cf68000, 315392, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x168000) = 0x348cf68000
18373 mmap(0x348cfb5000, 97928, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x348cfb5000
18373 close(3)                          = 0
18373 open("/usr/lib64/libWand.so.10", O_RDONLY) = 3
18373 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`@\201\2144\0\0\0"..., 832) = 832
18373 fstat(3, {st_mode=S_IFREG|0755, st_size=699672, ...}) = 0
18373 mmap(0x348c800000, 2792088, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x348c800000
18373 mprotect(0x348c8a7000, 2097152, PROT_NONE) = 0
18373 mmap(0x348caa7000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa7000) = 0x348caa7000
18373 close(3)                          = 0
18373 open("/usr/lib64/liblcms.so.1", O_RDONLY) = 3
18373 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0q\300\2131\0\0\0"..., 832) = 832

there are lots of open system call 'open' in source install version, and the first search location doesn't exist. is it the cause?

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[root@SERVERB]   sed '/open/!d' e1.out 
30217 open("/opt/lib/tls/x86_64/libMagick.so.10", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/tls/libMagick.so.10", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/x86_64/libMagick.so.10", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/libMagick.so.10", O_RDONLY) = 3
30217 open("/opt/lib/libWand.so.10", O_RDONLY) = 3
30217 open("/opt/lib/libjpeg.so.62", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/etc/ld.so.cache", O_RDONLY) = 3
30217 open("/usr/lib64/libjpeg.so.62", O_RDONLY) = 3
30217 open("/opt/lib/libz.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/lib64/libz.so.1", O_RDONLY) = 3
30217 open("/opt/lib/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/lib64/libpthread.so.0", O_RDONLY) = 3
30217 open("/opt/lib/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/lib64/libfreetype.so.6", O_RDONLY) = 3
30217 open("/opt/lib/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/lib64/libdl.so.2", O_RDONLY) = 3
30217 open("/opt/lib/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/lib64/libm.so.6", O_RDONLY) = 3
30217 open("/opt/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/lib64/libc.so.6", O_RDONLY) = 3
30217 open("/usr/lib/locale/locale-archive", O_RDONLY) = 3
30217 open("/proc/meminfo", O_RDONLY)   = 3
30217 open("/opt/lib/ImageMagick-6.2.8/config/coder.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/opt/share/ImageMagick-6.2.8/config/coder.xml", O_RDONLY) = 3
30217 open("/opt/share/doc/ImageMagick-6.2.8/coder.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/opt/share/ImageMagick-6.2.8/coder.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/home/wangzhiqian/.magick/coder.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("coder.xml", O_RDONLY)       = -1 ENOENT (No such file or directory)
30217 open("/opt/lib/ImageMagick-6.2.8/modules-Q16/coders/gif.la", O_RDONLY) = 3
30217 open("/opt/lib/gif.a", O_RDONLY)  = -1 ENOENT (No such file or directory)
30217 open("/etc/ld.so.cache", O_RDONLY) = 3
30217 open("/lib64/tls/x86_64/gif.a", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/lib64/tls/gif.a", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/lib64/x86_64/gif.a", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/lib64/gif.a", O_RDONLY)    = -1 ENOENT (No such file or directory)
30217 open("/usr/lib64/tls/x86_64/gif.a", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/lib64/tls/gif.a", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/lib64/x86_64/gif.a", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/lib64/gif.a", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/share/locale/locale.alias", O_RDONLY) = 3
30217 open("/usr/share/locale/zh_CN.GBK/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/share/locale/zh_CN.gbk/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/share/locale/zh_CN/LC_MESSAGES/libc.mo", O_RDONLY) = 3
30217 open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
30217 open("/usr/lib64/gconv/GBGBK.so", O_RDONLY) = 3
30217 open("/usr/lib64/gconv/GBK.so", O_RDONLY) = 3
30217 open("/opt/lib/ImageMagick-6.2.8/modules-Q16/coders/gif.so", O_RDONLY) = 3
30217 open("/usr/share/locale/zh.GBK/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/usr/share/locale/zh/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("107.gif", O_RDONLY)         = 3
30217 open("/opt/lib/ImageMagick-6.2.8/config/magic.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/opt/share/ImageMagick-6.2.8/config/magic.xml", O_RDONLY) = 3
30217 open("/opt/share/doc/ImageMagick-6.2.8/magic.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/opt/share/ImageMagick-6.2.8/magic.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("/home/wangzhiqian/.magick/magic.xml", O_RDONLY) = -1 ENOENT (No such file or directory)
30217 open("magic.xml", O_RDONLY)       = -1 ENOENT (No such file or directory)
30217 open("107.gif", O_RDONLY)         = 3
30217 open("2e.gif", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 3

thx,

You didn't mention whether both were Q16 builds. I think they both are, but
"convert | head -2" will tell for sure.

glennrp wrote:You didn't mention whether both were Q16 builds. I think they both are, but
"convert | head -2" will tell for sure.

thx glennrp for your reply. yes, they both were Q16 builds, , why the differences. what should i do about the Imagemagick performance,

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Version: ImageMagick 6.7.1-0 2011-08-14 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC
Features: OpenMP

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Version: ImageMagick 6.2.8 03/31/08 Q16 file:/usr/share/ImageMagick-6.2.8/doc/index.html
Copyright: Copyright (C) 1999-2006 ImageMagick Studio LLC

Most likely the slow-down is an improved color reduction algorithm. To test, save the image as PNG for both 6.2.8 and 6.7.1 and measure the execution time. What are the dimensions of your input image? We're getting these times on our Fedora system:

sh-4.2$ time ImageMagick-6.2.8/utilities/convert logo: -resize 100 logo.png

real 0m0.038s
user 0m0.025s
sys 0m0.012s

sh-4.2$ time ImageMagick-6.7.1/convert logo: -resize 100 logo.png

real 0m0.024s
user 0m0.061s
sys 0m0.005s

magick wrote:Most likely the slow-down is an improved color reduction algorithm. To test, save the image as PNG for both 6.2.8 and 6.7.1 and measure the execution time. What are the dimensions of your input image? We're getting these times on our Fedora system:

sh-4.2$ time ImageMagick-6.2.8/utilities/convert logo: -resize 100 logo.png

real 0m0.038s
user 0m0.025s
sys 0m0.012s

sh-4.2$ time ImageMagick-6.7.1/convert logo: -resize 100 logo.png

real 0m0.024s
user 0m0.061s
sys 0m0.005s

thx magick.!!

1 the dimensions of the input image as follows

Image name - 107.gif
Image: 107.gif
Format: GIF (CompuServe graphics interchange format)
Class: PseudoClass
Geometry: 20x20
Type: PaletteMatte
Endianess: Undefined
Colorspace: RGB
Channel depth:
Red: 8-bits
Green: 8-bits
Blue: 8-bits
Alpha: 1-bits

Image size - 2.8kb
Image resolution - 72x72
Image compression - LZW

2 and on my system,got this

convert
[root@ImageMagick-6.2.8]# time convert logo: -resize 100 logo.png

real 0m0.097s
user 0m0.082s
sys 0m0.015s
[root@ImageMagick-6.7.1]# time ./convert logo: -resize 100 logo.png

real 0m0.089s
user 0m0.823s
sys 0m0.011s

3. 107.png
meta data:

Image name - 107.png
Format: PNG (Portable Network Graphics)
Class: DirectClass
Geometry: 20x20
Type: PaletteMatte
Endianess: Undefined
Colorspace: RGB
Channel depth:
Red: 8-bits
Green: 8-bits
Blue: 8-bits
Alpha: 1-bits
Image size - 7.5e+02
Image resolution - 72x72
Image compression - Zip

i execute the time command

[root@ImageMagick-6.2.8]# time convert 107.png -resize 101 2.png

real 0m0.096s
user 0m0.092s
sys 0m0.005s
[root@ImageMagick-6.7.1]# time ./convert 107.png -resize 101 2.png

real 0m0.063s
user 0m0.760s
sys 0m0.008s

magic, i don't know why the 6.7.1 which from src builded cost much more user time, thx again, looking forward to your reply!

Try timing conversion to null:

time convert 107.gif -resize 100 null:

This tells you whether the problem exists in the encoder or
somewhere else.

glennrp wrote:Try timing conversion to null:

time convert 107.gif -resize 100 null:

This tells you whether the problem exists in the encoder or
somewhere else.

[root@SERVERB]# time convert 107.gif -resize 100 null:

real 0m0.065s
user 0m0.058s
sys 0m0.007s
[root@SERVERB]# time ./convert 107.gif -resize 100 null:

real 0m0.053s
user 0m0.533s
sys 0m0.030s

The problem is not encoder. Use /usr/bin/time, i got follows,why so many cpu context switches in my src building version:

[root@SERVERB]/usr/bin/time -v convert 107.gif -resize 100 100.gif
Command being timed: "convert 107.gif -resize 100 100.gif"
User time (seconds): 1.00
System time (seconds): 0.01
Percent of CPU this job got: 99%
Elapsed (wall clock) time (h:mm:ss or m:ss): 0:01.01
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 0
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 2354
Voluntary context switches: 1
Involuntary context switches: 8
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
[root@SERVERB]# /usr/bin/time -v ./convert 107.gif -resize 100 100.gif
Command being timed: "./convert 107.gif -resize 100 100.gif"
User time (seconds): 27.82
System time (seconds): 1.05
Percent of CPU this job got: 944%
Elapsed (wall clock) time (h:mm:ss or m:ss): 0:03.05
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 0
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 329584
Voluntary context switches: 936
Involuntary context switches: 779
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0

thx.

There have been some recent changes in the quantization function that might affect
this. Does IM-6.7.1-8 or later still show the performance bug?

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