wal_sender_delay is still required?

Hi,

Walsender doesn't need the periodic wakeups anymore, thanks to
the latch feature. So wal_sender_delay is basically useless now.
How about dropping wal_sender_delay or increasing the default
value?

Regards,

-- 
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center