如何提高 db2 backup/restore 速度

看到只有1个CPU 在忙，

>># oslevel
6.1.0.0
(db2pmtx@ibm81p36)/dbbackups/db2pmtx/online
>># db2level
DB21085I  This instance or install (instance name, where applicable: "db2pmtx")
uses "64" bits and DB2 code release "SQL10054" with level identifier
"0605010E".
Informational tokens are "DB2 v10.5.0.4", "s140813", "IP23616", and Fix Pack
"4".


UTIL_IMPACT_LIM 100