to information from a single process causes hangs. Specifically, this
fixes problems (hangs) with concurrent ps commands, when the system is under
heavy memory load.
Reviewed by: davidg
but not there. The extent of the object lock is expanded to be over the
range that it is needed. Additionally, clean up the code so that it conforms
to better coding style.
"It would be good to point out that a machine that only has SCSI devices
may also generate this message if an IDE CD-ROM is not configured as
the Master device. Words like these might work ..."
This generally means that there is no CDROM in the CDROM drive,
or the drive is not visible on the bus. Feed the drive
something, and/or check it's master/slave status.
Submitted by: Neil Smith <ngs@sesame.hensa.ac.uk> with a small addition
of delta's to be mailed out every hour (or however often you schedule
the cron job).
ctm_dequeue is the cron job which takes the stuff from the
queue directory and punts it into sendmail. The chunks of
the deltas (and the complete deltas if they are that small)
are sorted into order before being dispatched, so the people
subscribing should still get the bits in the right order.
The changes to ctm_smail should be fairly safe as they won't be
activated unless you go for the new queue directory option.
option to pwd_mkdb and adding this option to utilities invoking it.
Further, the filling of both the secure and insecure databases has been
merged into one loop giving also a performance improvemnet.
Note that I did *not* change the adduser command. I don't read perl
(it is a write only language anyway).
The change will drastically improve performance for passwd and
friends with large passwd files. Vipw's performance won't change.
In order to do that some kind of diff should be made between the
old and new master.passwd and depending the amount of changes, an
incremental or complete update of the databases should be agreed
upon.
Testing with the high frequency of 20000 Hz (to find problems) only found
the problem that this frequency is too high for slow i386's.
Disable interrupts while setting the timer frequency. This was unnecessary
before rev.1.57 and forgotten in rev.1.57. The critical (i8254) interrupts
are disabled in another way at boot time but not in the sysctl to change
the frequency.
sleeps before being swapped out. The time is increased from 4 secs to
10 secs. Originally I had decreased it from 20 to 4, but that is a bit
severe. 20 is too long though.
