In proxyper.ini :
[rc564]
expertmode=1
logfilekeyblock=pproxyrc5-
logfilekeyblockrotation=daily
minkeysready=12000
maxkeysready=15000
minkeysdone=500000
maxkeysdone=800000
[ogr]
expertmode=1
logfilekeyblock=pproxyogr-
logfilekeyblockrotation=daily
minkeysready=20
maxkeysready=50
minkeysdone=500
maxkeysdone=1500
Proxy wont flush a single WU until minkeysdone is in outbuff. It will force a flush when maxkeysdone is reached. Set min to something big, that you dont expect to reach, and max to even bigger, and you're done. Expertmode must be set.