Answer
Under "/etc/init.d/S01logging", there is one line "/sbin/syslogd -D -C32 -m0 \", change the -C32 to -C256 or -C512. The number after the -C equals the buffer size in KB.
Under "/etc/init.d/S01logging", there is one line "/sbin/syslogd -D -C32 -m0 \", change the -C32 to -C256 or -C512. The number after the -C equals the buffer size in KB.