[tor-bugs] #13702 [Tor]: Adding OpenBSD to doc/TUNING

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#13702: Adding OpenBSD to doc/TUNING
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     Reporter:  mmcc       |      Owner:
         Type:             |     Status:  needs_review
  enhancement              |  Milestone:  Tor: 0.2.6.x-final
     Priority:  normal     |    Version:  Tor: unspecified
    Component:  Tor        |   Keywords:  OpenBSD, tuning, doc/TUNING lorax
   Resolution:             |  Parent ID:
Actual Points:             |
       Points:             |
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Comment (by mmcc):

 rl1987: Yeah, I'm doing more research now, but I may have made a newb
 mistake reading the OpenBSD documentation. It seems that one can change
 the `sysctl` variable `kern.maxfiles` with a command like `sudo sysctl
 kern.maxfiles=20000`. I thought I had double-checked this - sorry for not
 doing a more rigorous review before it got committed.

 I'll come back to confirm soon. If I did indeed make a mistake, we can
 change the first three paragraphs (through "recompile the kernel") with:

   The maximum number of file descriptors that an OpenBSD machine can have
 open is stored in the `sysctl` variable `kern.maxfiles`. This value
 defaults to `7030` - to verify this, run `sysctl kern.maxfiles`.

   To immediately change a running system's file descriptor limit to, for
 example, 20,000 files, run `sudo sysctl kern.maxfiles=20000`. All sysctl
 variables are reset upon reboot using defaults and `/etc/sysctl.conf`, so
 to make your change permanent you must add the line `kern.maxfiles=20000`
 to `/etc/sysctl.conf`.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13702#comment:3>
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