08-25-2015
But I can not predict when my application stalls?It is not definite?Can you tell me the procedure (step by step) in gcore to take the core dump.I have tested the following and it is dumping in running condition.
The following commands are executed to take the dump.
1) Ulimit –c (To check the limit of dump file which will be created)
In normal system it yields ‘0’. Means no dump file will be created.
2) Ulimit –c unlimited (to make the volume of dump file as unlimited)
You should get ‘unlimited’ as output if you again type ‘’ulimit –c’’ command in $ prompt.
3) gdb --pid = ‘10008’ (10008 is the PID of WEBFGSERVER in linux system where WEBFGSERVER is running)
You will be redirected to gdb prompt.
4) Typed the following in gdb prompt.
gdb> gcore. It will take 45 secs to 1 minute to create the memory dump. When you are redirected to gdb> type the following.
5) gdb> quit
6) It will create a file named core.10008 in the directory you are in.
Is there any thing wrong in it.If not then how the above steps can be used to core dump immediately after the process stalls?
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LEARN ABOUT DEBIAN
fntsample
fntsample(1) General Commands Manual fntsample(1)
NAME
fntsample - PDF and PostScript font samples generator
SYNOPSIS
fntsample [ OPTIONS ] -f FONT-FILE -o OUTPUT-FILE
fntsample -h
DESCRIPTION
fntsample program can be used to generate font samples that show Unicode coverage of the font and are similar in appearance to Unicode
charts. Samples can be saved into PDF (default) or PostScript file.
OPTIONS
fntsample supports the following options.
--font-file, -f FONT-FILE
Make samples of FONT-FILE.
--font-index, -n IDX
Font index for FONT-FILE specified using --font-file option. Useful for files that contain multiple fonts, like TrueType Collec-
tions (.ttc). By default font with index 0 is used.
--output-file, -o OUTPUT-FILE
Write output to OUTPUT-FILE.
--other-font-file, -d OTHER-FONT
Compare FONT-FILE with OTHER-FONT. Glyphs added to FONT-FILE will be highlighted.
--other-index, -m IDX
Font index for OTHER-FONT specified using --other-font-file option.
--postscript-output, -s
Use PostScript format for output instead of PDF.
--svg, -g
Use SVG format for output. The generated document contains one page. Use range selection options to specify which.
--print-outline, -l
Print document outlines data to standard output. This data can be used to add outlines (aka bookmarks) to resulting PDF file with
pdfoutline program.
--include-range, -i RANGE
Show characters in RANGE.
--exclude-range, -x RANGE
Do not show characters in RANGE.
--style, -t "STYLE: VAL"
Set STYLE to value VAL. Run fntsample with option --help to see list of styles and default values.
--help, -h
Display help text and exit.
Parameter RANGE for -i and -x can be given as one integer or a pair of integers delimited by minus sign (-). Integers can be specified in
decimal, hexadecimal (0x...) or octal (0...) format. One integer of a pair can be missing (-N can be used to specify all characters with
codes less or equal to N, and N- for all characters with codes greather or equal to N). Multiple -i and -x options can be used.
EXAMPLES
Make PDF samples for font.ttf and write them to file samples.pdf:
fntsample -f font.ttf -o samples.pdf
Make PDF samples for font.ttf, compare it with oldfont.ttf and highlight new glyphs. Write output to file samples.pdf:
fntsample -f font.ttf -d oldfont.ttf -o samples.pdf
Make PostScript samples for font.ttf and write output to file samples.ps. Show only glyphs for characters with codes less or equal to
U+04FF but exclude U+0370-U+03FF:
fntsample -f font.ttf -s -o samples.ps -i -0x04FF -x 0x0370-0x03FF
Make PDF samples for font.ttf and save output to file samples.pdf adding outlines to it:
fntsample -f font.ttf -o temp.pdf -l > outlines.txt
pdfoutline temp.pdf outlines.txt samples.pdf
AUTHOR
Copyright (C) 2007 Eugeniy Meshcheryakov <eugen@debian.org>
Homepage: <http://fntsample.sourceforge.net/>
SEE ALSO
pdfoutline(1)
2010-10-14 fntsample(1)