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bfc1181644
gnupg/common
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Werner Koch bfc1181644
iobuf: Increase the size of the buffer. Add iobuf_set_buffer_size. 
* common/iobuf.c (IOBUF_BUFFER_SIZE): Rename to
DEFAULT_IOBUF_BUFFER_SIZE and increase to 64k.
(iobuf_buffer_size): New var.  Always use this instead of the macro.
(iobuf_set_buffer_size): New.
(struct file_filter_ctx_t): Add field delayed_rc.
(file_filter) [!W32]: Try to fill the supplied buffer.
--

I did some test to see whether this has an effect.  A test program
piped 100 million random bytes to gpg to symmetric encryption only w/0
compression.  Single read means the old behaviour, multi read the new
behaviour which fills up the buffer when the read(2) returned only 4k
in once call.

8k buffer single read
        User time (seconds): 0.09
        System time (seconds): 0.04
        Percent of CPU this job got: 6%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.04

8k buffer multi read
       User time (seconds): 0.08
       System time (seconds): 0.05
       Percent of CPU this job got: 6%
       Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.04

64k buffer single read
        User time (seconds): 0.09
        System time (seconds): 0.06
        Percent of CPU this job got: 6%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.20

64k buffer multi read
        User time (seconds): 0.11
        System time (seconds): 0.06
        Percent of CPU this job got: 8%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.01

128k buffer single read
        User time (seconds): 0.09
        System time (seconds): 0.05
        Percent of CPU this job got: 7%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.05

128k buffer multi read
        User time (seconds): 0.11
        System time (seconds): 0.05
        Percent of CPU this job got: 8%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.01

512k buffer single read:
        User time (seconds): 0.08
        System time (seconds): 0.08
        Percent of CPU this job got: 7%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.21

512k buffer multi read:
        User time (seconds): 0.10
        System time (seconds): 0.06
        Percent of CPU this job got: 7%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.05

Does not make much of a difference :-(.  Maybe it changes depending on
the type of used filters.

Signed-off-by: Werner Koch <wk@gnupg.org>
2018-01-24 18:38:17 +01:00
..
agent-opt.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
all-tests.scm tests: Make it possible to run all tests using our infrastructure. 2017-05-11 18:12:37 +02:00
argparse.c indent: Wrap overlong lines in argparse.c 2017-08-01 08:28:01 +02:00
argparse.h common: Allow abbreviations of standard options. 2017-07-18 18:08:25 +02:00
asshelp2.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
asshelp.c Adjust for changed macro names in libgpg-error master. 2017-12-11 10:42:23 +01:00
asshelp.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
audit.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
audit.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
b64dec.c g10, sm, dirmngr, common: Add comment for fall through. 2017-05-10 11:13:12 +09:00
b64enc.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
call-gpg.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
call-gpg.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
ccparray.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
ccparray.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
ChangeLog-2011 Fix typos 2015-10-28 10:20:17 +01:00
ChangeLog-2011.include Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
ChangeLog.jnlib common: Remove JNLIB from boiler plate (jnlib merge). 2015-04-24 16:42:28 +02:00
common-defs.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
compliance.c gpg: Tweak compliance checking for verification 2017-07-27 16:22:36 +02:00
compliance.h gpg,sm: Check compliance of the RNG. 2017-07-17 15:53:16 +02:00
convert.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
dotlock.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
dotlock.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
dynload.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
exaudit.awk Nuked almost all trailing white space. 2011-02-04 12:57:53 +01:00
exechelp-posix.c doc: Update copyright notices for common/exechelp*. 2017-11-29 11:32:42 +01:00
exechelp-w32.c doc: Update copyright notices for common/exechelp*. 2017-11-29 11:32:42 +01:00
exechelp-w32ce.c doc: Update copyright notices for common/exechelp*. 2017-11-29 11:32:42 +01:00
exechelp.h doc: Update copyright notices for common/exechelp*. 2017-11-29 11:32:42 +01:00
exectool.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
exectool.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
exstatus.awk Nuked almost all trailing white space. 2011-02-04 12:57:53 +01:00
fwddecl.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
gc-opt-flags.h gpg: Add option --dirmngr-program. 2014-03-12 18:35:36 +01:00
get-passphrase.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
get-passphrase.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
gettime.c common: Accept the Z-suffix for yymmddThhmmssZ format. 2017-11-01 18:35:29 +01:00
gettime.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
gnupg.ico w32: Add icons and version information. 2013-05-07 21:35:48 +02:00
gpgrlhelp.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
helpfile.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
homedir.c build: New configure option --enable-run-gnupg-user-socket. 2017-12-12 09:42:43 +01:00
host2net.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
i18n.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
i18n.h Fix typos found using codespell. 2015-11-17 12:50:22 +01:00
init.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
init.h Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
iobuf.c iobuf: Increase the size of the buffer. Add iobuf_set_buffer_size. 2018-01-24 18:38:17 +01:00
iobuf.h iobuf: Increase the size of the buffer. Add iobuf_set_buffer_size. 2018-01-24 18:38:17 +01:00
isascii.c common: Change license of isascii.c to all-premissive, 2015-12-14 16:21:19 +01:00
keyserver.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
ksba-io-support.c common: Rename remaining symbols in ksba-io-support. 2017-02-16 17:21:05 +01:00
ksba-io-support.h common: Rename remaining symbols in ksba-io-support. 2017-02-16 17:21:05 +01:00
localename.c common: Fix warning for portability. 2017-03-07 10:42:46 +09:00
logging.c Use the gpgrt log functions if possible. 2017-11-27 15:00:25 +01:00
logging.h Adjust for changed macro names in libgpg-error master. 2017-12-11 10:42:23 +01:00
Makefile.am gpg,sm: New option --with-key-screening. 2017-10-17 21:10:19 +02:00
mapstrings.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
mbox-util.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
mbox-util.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
membuf.c Clean up word replication. 2017-02-21 13:11:46 -05:00
membuf.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
miscellaneous.c Adjust for changed macro names in libgpg-error master. 2017-12-11 10:42:23 +01:00
mischelp.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
mischelp.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
mkdir_p.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
mkdir_p.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
mkerrors Nuked almost all trailing white space. 2011-02-04 12:57:53 +01:00
mkerrtok Nuked almost all trailing white space. 2011-02-04 12:57:53 +01:00
mkstrtable.awk Nuked almost all trailing white space. 2011-02-04 12:57:53 +01:00
name-value.c Clean up word replication. 2017-02-21 13:11:46 -05:00
name-value.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
openpgp-oid.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
openpgpdefs.h gpg: First take on PKT_ENCRYPTED_AEAD. 2018-01-21 16:30:53 +01:00
percent.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
pkscreening.c gpg,sm: New option --with-key-screening. 2017-10-17 21:10:19 +02:00
pkscreening.h gpg,sm: New option --with-key-screening. 2017-10-17 21:10:19 +02:00
README common: Update README. 2016-03-02 14:27:30 +01:00
recsel.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
recsel.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
server-help.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
server-help.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
session-env.c Clean up word replication. 2017-02-21 13:11:46 -05:00
session-env.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
sexp-parse.h Clean up word replication. 2017-02-21 13:11:46 -05:00
sexputil.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
shareddefs.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
signal.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
simple-pwquery.c Clean up word replication. 2017-02-21 13:11:46 -05:00
simple-pwquery.h Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
ssh-utils.c common: Correctly render SHA256-based ssh fingerprints. 2017-05-24 17:07:13 +02:00
ssh-utils.h common: Support different digest algorithms for ssh fingerprints. 2017-05-24 17:01:48 +02:00
status.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
status.h gpg,gpgsm: Emit status code ENCRYPTION_COMPLIANCE_MODE. 2017-06-23 12:01:20 +02:00
stringhelp.c common: New function split_fields_colon. 2017-07-17 15:53:16 +02:00
stringhelp.h common: New function split_fields_colon. 2017-07-17 15:53:16 +02:00
strlist.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
strlist.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
sysutils.c assuan: Fix exponential decay for first second. 2017-11-15 15:31:52 +01:00
sysutils.h common: New functions gnupg_daemon_rootdir and gnupg_chdir. 2017-07-25 12:43:37 +02:00
t-b64.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-ccparray.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-convert.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-dotlock.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-exechelp.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-exectool.c tests: Avoid skipping exectool tests. 2016-12-20 18:39:30 +01:00
t-gettime.c tests: Fix t-gettime for a time_t of 64 and a long of 32 bit. 2017-01-12 10:39:19 +01:00
t-helpfile.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-iobuf.c Replace use of variable-length-arrays. 2017-01-02 13:29:18 +01:00
t-mapstrings.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-mbox-util.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-name-value.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-openpgp-oid.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-percent.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-recsel.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-session-env.c Spelling fixes in docs and comments. 2017-04-28 10:06:33 +09:00
t-sexputil.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-ssh-utils.c common: Correctly render SHA256-based ssh fingerprints. 2017-05-24 17:07:13 +02:00
t-stringhelp.c common: New function split_fields_colon. 2017-07-17 15:53:16 +02:00
t-strlist.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
t-support.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
t-support.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
t-sysutils.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
t-timestuff.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
t-w32-reg.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
t-zb32.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
tlv.c Silence two -Wlogical-op warnings. 2017-01-05 20:43:40 +01:00
tlv.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
ttyio.c Clean up word replication. 2017-02-21 13:11:46 -05:00
ttyio.h common: Remove unused function tty_print_string. 2017-01-17 10:19:06 +01:00
types.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
userids.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
userids.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
utf8conv.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
utf8conv.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
util.h common: Add constant KEYGRIP_LEN. 2017-09-27 09:33:14 +02:00
utilproto.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
w32-reg.c Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
w32help.h Clarify text of LGPLv2+/GPLv2+ licensed files. 2017-02-24 13:48:28 +01:00
w32info-rc.h.in Update copyright notices for 2017. 2017-01-23 19:16:55 +01:00
xasprintf.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
xreadline.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
yesno.c Clean up word replication. 2017-02-21 13:11:46 -05:00
zb32.c Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00
zb32.h Change all http://www.gnu.org in license notices to https:// 2016-11-05 12:02:19 +01:00

README 

Common functionality used by all modules of GnuPG.