Messages in this thread | | | Date | Fri, 1 Feb 2002 13:52:25 -0600 | From | Ken Brownfield <> | Subject | Re: Continuing /dev/random problems with 2.4 |
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On Fri, Feb 01, 2002 at 02:50:31PM -0500, Robert Love wrote: | What is the output of `/proc/sys/kernel/random/entropy_avail' when | programs are stalled? Is it actually 0?
Yep, and it never raises above that -- it doesn't jump around even after a month.
| Can you see if any programs are perhaps draining entropy in the | background? See what has /dev/[u]random open ... note even /dev/urandom | uses entropy, its the same as /dev/random, except it doesn't care when | the entropy estimate is 0.
I've scanned /proc to verify that all PIDs do not have an FD open to /dev/random. This was my first guess when this started -- some developer was draining entropy in a while(1) loop. I believe I went so far as to go to runlevel 1 with nothing but sh and kernel threads.
That may not be comprehensive, so I'm open to other diagnostic tips. And yes, /dev/urandom does continue to work, as expected.
Thanks! -- Ken. brownfld@irridia.com
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