Indeed as you note, there is more to it than message removal,
my reply was overly simplistic.
On 24/01/2010 11:51 PM, Jürgen Keil wrote:
an extraneous message, this CR is filed to get rid of
it and it is gone in 133.
6910378 WARNING: Memory pressure: TCP defensive mode on
Is it really a harmless message?
Seems that with zfs all system memory can be in use,
and when it's time to clean up some of the cached data
to free some memory, tcp will enter "defensive mode"
and starts to abort connections more aggressively or
rejects accepting new connections under certain
conditions.
The fix for 6910378 even adds a new tunable "tcp_do_reclaim"
that can be set to 0 to stop the tcp defensive mode.
On 24/01/2010 09:45 AM, dick hoogendijk wrote:
Recently I switched my webserver from solaris 10 to OpenSolaris (b131).
When I rebooted I saw some messages about TCP defense mode on ; TCP
defense mode off (repeated a few times).
What is this TCP mode on/off? When does it happen? Can I influence it?
(never saw it before, so I'm just veruy curious)
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