I followed the instructions above on our work cluster (Ubuntu 14.04) that
has a number of users (users of the cluster rather than J :( ). Now when I
start jconsole I get a list of lsof warnings before the session is
available (see below for a representative sample of the errors). On my
local WSL installation (Ubuntu 18.04) I don't get this behaviour. Does this
make any sense?
JVERSION
Engine: j901/j64/linux
Beta-f: commercial/2019-05-07T10:04:27
Library: 9.01.05
Platform: Linux 64
Installer: J901 install
InstallPath: /opt/j/j901
Contact: www.jsoftware.com
lsof: WARNING: can't stat() nsfs file system /run/docker/netns/default
Output information may be incomplete.
lsof: WARNING: can't stat() tmpfs file system
/var/lib/docker/containers/xxxxx/shm
Output information may be incomplete.
lsof: WARNING: can't stat() nsfs file system /run/docker/netns/xxxxx
Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/xxxxx/gvfs
Output information may be incomplete.
lsof: WARNING: can't stat() tmpfs file system
/var/lib/docker/containers/xxxxx/shm
Output information may be incomplete.
lsof: WARNING: can't stat() tmpfs file system
/var/lib/docker/containers/xxxxx/shm
Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/xxxx/gvfs
Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/xxxx/gvfs
Output information may be incomplete.
On Mon, May 20, 2019 at 2:16 AM Eric Iverson <[email protected]>
wrote:
> The base library to 901 has been updated with new break and setbreak verb.
>
> Please experiment and provide feedback.
>
> 1. update 901 base library
> 2. restart to get new base
> 3. break 0 NB. help
> 3. 6!:3[120 NB. sleep
> 4. start another J task
> 5. break'' NB. send break to all other tasks in the default class
> 6. break'' NB. 2nd break required to interrupt sleep
> 7. put 1st task in a while loop
> 8. break'' NB. send break to attention out of while loop
>
> Play around with setbreak for other classes, pid args etc.
>
> Start several J tasks and look at the break 1 results.
>
> The jbrk script in ~bin works the same. But it is probably easier to just
> start another J task and do break'' when you need a break, rather than
> worrying about a special desktop icon or finding and running ~bin/jbrk.
>
> When this stuff has settled down, the wiki doc on break/attention/interrupt
> will be updated.
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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