Hi,
I have a SSL enabled client application. This is a multi threaded
application in which
simultaneous client-server connect is achieved by spawning a thread for each
connection.
When the application is stressed by creating spawning about 100 threads and
each thread
would do a SSL connect to server sequentially ~1000 times.
I observe that the swap size in my Linux box(Fedora core 4 - 2.6.11.12 )
reduces to zero megabytes
leading to application crash at times and kernel killing the process (
kernel: Out of Memory: Killed process ).
The CTX object is created once for every thread. SSL object is freed after
every connection[SSL_free(ssl);]
BIO is set as follows:
bio = BIO_new(BIO_s_socket());
BIO_set_fd(bio, sd, BIO_NOCLOSE);
BIO_set_close(bio, BIO_NOCLOSE) ;
SSL_set_bio(ssl,bio,bio);
Any ideas why swap size reduces to zero. The application code thus far seems
not to have leak. Its a thin client without
much heap allocation. Should BIO_free needs to be called after every
connection? I suppose SSL_free() takes care, isn't?
Thanks,
Prabhu. S
