[stunnel-users] Stunnel 4.21 99% cpu ultilization

Mon Jun 23 19:39:16 CEST 2008

Hi All,

I've been googling for this issue but it seems like google is not my friend at the moment.  I am running Linux with 4 cpus and top command shows stunnel at 99-100% cpu.  Please help.

//stunnel configuration file

# PID is created inside chroot jail
pid = /var/run/stunnel.pid

# debug
debug = 7
output = /var/log/stunnel.log

# Authentication stuff
verify = 2

cert =  /etc/stunnel/cert.pem
CAfile = /etc/stunnel/ca.pem

#Some performance tunings

socket = l:TCP_NODELAY=1
socket = r:TCP_NODELAY=1

# Use it for client mode
client = yes

/////////// stunnel version
stunnel 4.21 on i686-pc-linux-gnu with OpenSSL 0.9.7a Feb 19 2003
Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP

Global options
debug           = 5
pid             = /var/run/stunnel.pid
RNDbytes        = 64
RNDfile         = /dev/urandom
RNDoverwrite    = yes

Service-level options
cert            = /etc/stunnel/stunnel.pem
ciphers         = ALL:!ADH:+RC4:@STRENGTH
key             = /etc/stunnel/stunnel.pem
session         = 300 seconds
sslVersion      = SSLv3 for client, all for server
TIMEOUTbusy     = 300 seconds
TIMEOUTclose    = 60 seconds
TIMEOUTconnect  = 10 seconds
TIMEOUTidle     = 43200 seconds
verify          = none

//openssl version
OpenSSL 0.9.7a Feb 19 2003

//Redhat version
Red Hat Linux release 9 (Shrike)

root]#cat /proc/cpuinfo | grep processor | wc -l
      4

http://stunnel.mirt.net/mailman/listinfo/stunnel-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.stunnel.org/pipermail/stunnel-users/attachments/20080623/66ed5730/attachment.html>