[OpenIndiana-discuss] OI DCE cache (dce_ip)

[jason matthews]

Has the DCE cache problem been fixed in OI? the smartos folks a proposed solution but even their work appears to have stopped.

i am still running this bit of wisdom every three minutes on 151a1 but i am reaching traffic levels where the cache still reaches up to three  hundred megabytes. this causes system performance to drag and the usefulness of this work around is degrading.

#!/bin/bash
/usr/sbin/ndd -set /dev/ip ip_dce_reclaim_fraction 1
{
echo '%/l/lotsfree >oldlotsfree'
echo 'lotsfree/Z ((%/l/freemem)*4)'
sleep 2
echo 'lotsfree/Z <oldlotsfree'
} | exec /usr/bin/mdb -kw

if there is a fix in a subsequent OI release i will upgrade to a7, if not i will need to consider other options like moving the proxy tier to freebsd or gasp buy 3x hardware for the proxy tier to keep platform consistency. 

my process was to search illumos, but search there  points to google and in google the best i found was:

https://gist.github.com/postwait/2597292/raw/d8fd94aaac6da21830ba3249ad438bd33cf53b97/gistfile1.txt
"OS-1082 dce_reclaim_thread stops making forward progress"
http://wiki.smartos.org/pages/viewpage.action?pageId=755416&navigatingVersions=true
 OS-1056 ip_dce_reclaim_stack() cannot be made perfectly safe

both of these entries do no instill confidence.

thanks,
j.