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Size of Libgcrypt (and other libraries) and subsequent performance
From: |
Ashish Gupta |
Subject: |
Size of Libgcrypt (and other libraries) and subsequent performance |
Date: |
Wed, 23 Apr 2008 14:49:20 +0530 |
Hi,
The size of the libraries (especially libgcrypt) claimed at http://www.gnu.org/software/gnutls/comparison.html is much lower than what is produced by default (note, the size claimed is 367kb whereas the defaule build for libgcrypt results in close of 1.2MB shared object). Can someone help in understanding how these binaries were created for the Debian and how can this much optimization be achieved?
The default build of libgcrypt (1.2MB) is relatively comparable to the size of libcrypto (1.3MB) (used with openssl). Hence the effective load time of the (similar) programs using both these libraries yeilds better performance on openssl. The sample client timings as observed over itierations (taking into account TLB) gives:
address@hidden:~/Atemp/SSLExamples$ time ./gnutls/client
Finished
real 0m0.294s
user 0m0.046s
sys 0m0.092s
address@hidden:~/Atemp/SSLExamples$ time ./openssl/client
FINISHED
real 0m0.117s
user 0m0.004s
sys 0m0.004s
The libraries linked in were as follows:
address@hidden:~/Atemp/SSLExamples$ ldd ./gnutls/client
linux-gate.so.1 => (0xffffe000)
libgnutls.so.26 => /usr/local/lib/libgnutls.so.26 (0xb7e55000)
libtasn1.so.3 => /usr/lib/libtasn1.so.3 (0xb7e35000)
libgcrypt.so.11 => /usr/local/lib/libgcrypt.so.11 (0xb7dc5000)
libgpg-error.so.0 => /usr/local/lib/libgpg-error.so.0 (0xb7dc1000)
libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7c80000)
libz.so.1 => /usr/lib/libz.so.1 (0xb7c6c000)
/lib/ld-linux.so.2 (0xb7ef1000)
address@hidden:~/Atemp/SSLExamples$ ldd ./openssl/client
linux-gate.so.1 => (0xffffe000)
libssl.so.0.9.8 => /usr/lib/i686/cmov/libssl.so.0.9.8 (0xb7f61000)
libcrypto.so.0.9.8 => /usr/lib/i686/cmov/libcrypto.so.0.9.8 (0xb7e1f000)
libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb7e1a000)
libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7cd9000)
libz.so.1 => /usr/lib/libz.so.1 (0xb7cc5000)
/lib/ld-linux.so.2 (0xb7fae000)
The necessary programs are also attached. Both the programs simply connect to the same server over the internet and issue same queries. No certification check is done in either.
In case I can provide more information on this please let me know.
Regards,
Ashish Gupta
gnutls_client.c
Description: Text Data
openssl_client.c
Description: Text Data
- Size of Libgcrypt (and other libraries) and subsequent performance,
Ashish Gupta <=
- Message not available
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Simon Josefsson, 2008/04/24
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Simon Josefsson, 2008/04/24
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Simon Josefsson, 2008/04/24
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Ashish Gupta, 2008/04/24
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Simon Josefsson, 2008/04/25
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Ashish Gupta, 2008/04/28
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Simon Josefsson, 2008/04/28
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Werner Koch, 2008/04/25
- Re: Size of Libgcrypt (and other libraries) and subsequent performance, Simon Josefsson, 2008/04/25