> -----Original Message----- > From: Mark Thomas [mailto:ma...@apache.org] > Sent: Friday, August 14, 2009 5:57 PM > To: Tomcat Developers List > Subject: Re: /dev/urandom usage > > George Sexton wrote: > > I've got a question and it's kind of deep developer question. > > > > I was poking around today looking at my tomcat instance running under > Linux. > > > > I was looking in the /proc/<pid>/fd directory, which is the list of > file > > descriptors open by my servlet application. > > > > There are around 1400 open file descriptors. What I don't understand > is why > > there are some 800+ file descriptors that are open to /dev/urandom. > On this > > particular host there are some 400 configured hosts/contexts. > > > > On another server, there are 1100 file descriptors open to > /dev/urandom. For > > this server, there are around 200 configured hosts/contexts. > > > > I'm using Sun JDK 1.6.0_14 on OpenSUSE 11.1. One machine is amd64 > > architecture, while the other is i386. > > > > Does anyone have any idea what could be causing this? It seems kind > of > > strange to have 800-1200 file descriptors open to one pseudo file. > > Take a look at ManagerBase.getRandom(). The probably explains the > majority of it. > > Mark
Hmmmm. You'll have to execuse me if this is a dumb question, but does that mean that each session is creating its own instance of java.security.SecureRandom, and each instance of java.security.SecureRandom is opening /dev/urandom? George Sexton MH Software, Inc. http://www.mhsoftware.com/ Voice: 303 438 9585 --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
