informix 0级恢复速度很慢？

通过 onbar -b -L 0进行的备份，在0级恢复时有两个时间点特别慢，不知有无优化空间或者是 有什么问题？
Thu 12:30:51 index notice: completed checking 1 client(s)
Thu 12:31:12 /usr/backup/ptape mounted file disk ISMData.0001
**Thu 12:31:12 /usr/backup/ltape mounted file disk ISMLogs.0001
Thu 14:00:05 media info event: file disk ISMData.0001 will be needed**
Thu 14:00:05 media event cleared: confirmed mount of ISMData.0001 on /usr/backup/ptape
Thu 14:00:05 /usr/backup/ptape mounted file disk ISMData.0001
Thu 14:00:05 db.host.name:INFORMIX:/online_web/rootdbs/0 (12/11/19) starting read from ISMData.0001 of 353 MB
**Thu 14:00:06 db.host.name:INFORMIX:/online_web/rootdbs/0 (12/11/19) done reading 318 KB
Thu 17:24:40 media info event: file disk ISMData.0001 will be needed**
Thu 17:24:40 media event cleared: confirmed mount of ISMData.0001 on /usr/backup/ptape
Thu 17:24:41 /usr/backup/ptape mounted file disk ISMData.0001
Thu 17:24:41 db.host.name:INFORMIX:/online_web/rootdbs/0 (12/11/19) starting read from ISMData.0001 of 353 MB
Thu 17:25:32 db.host.name:INFORMIX:/online_web/rootdbs/0 (12/11/19) done reading 353 MB
Thu 17:25:35 media info event: file disk ISMData.0001 will be needed
Thu 17:25:35 media event cleared: confirmed mount of ISMData.0001 on /usr/backup/ptape
Thu 17:25:36 /usr/backup/ptape mounted file disk ISMData.0001
Thu 17:25:36 db.host.name:INFORMIX:/online_web/logdbs/0 (12/11/19) starting read from ISMData.0001 of 62 KB
Thu 17:25:36 db.host.name:INFORMIX:/online_web/logdbs/0 (12/11/19) done reading 62 KB
Thu 17:25:36 media info event: file disk ISMData.0001 will be needed
Thu 17:25:36 media waiting event: waiting for file disk ISMData.0001 on db.host.name
Thu 17:25:37 media info event: file disk ISMData.0001 will be needed
Thu 17:25:37 media info event: file disk ISMData.0001 will be needed
Thu 17:25:37 media event cleared: confirmed mount of ISMData.0001 on /usr/backup/ptape
Thu 17:25:37 /usr/backup/ptape mounted file disk ISMData.0001
Thu 17:25:37 db.host.name:INFORMIX:/online_web/datadbs/0 (12/11/19) starting read from ISMData.0001 of 84 GB
Thu 17:30:08 db.host.name:INFORMIX:/online_web/idxdbs/0 (12/11/19) starting read from ISMData.0001 of 15 GB
Thu 17:40:37 media critical event: waiting for file disk ISMData.0001 on db.host.name
Thu 18:02:18 media alert event: waiting for file disk ISMData.0001 on db.host.name

bar_act.log
**2019-12-12 12:31:16 1904 1892 /home/informix/bin/onbar_d -r -p
2019-12-12 14:00:05 1904 1892 Successfully connected to Storage Manager.**
2019-12-12 14:00:05 1904 1892 Begin reserved pages restore (level 0 of rootdbs, Storage Manager copy ID: 1749896788 0).
** 2019-12-12 14:00:06 1904 1892 Completed reserved pages restore (level 0 of rootdbs).
2019-12-12 17:24:40 1904 1892 Successfully connected to Storage Manager.**
2019-12-12 17:24:41 1904 1892 Begin cold level 0 restore rootdbs (Storage Manager copy ID: 1749896788 0).
2019-12-12 17:25:34 1904 1892 Completed cold level 0 restore rootdbs.
2019-12-12 17:25:35 3780 1904 Process 3780 1904 successfully forked.
2019-12-12 17:25:35 3779 1904 Process 3779 1904 successfully forked.
2019-12-12 17:25:35 3780 1904 Successfully connected to Storage Manager.
2019-12-12 17:25:35 3779 1904 Successfully connected to Storage Manager.
2019-12-12 17:25:35 3778 1904 Process 3778 1904 successfully forked.
2019-12-12 17:25:35 3778 1904 Successfully connected to Storage Manager.
2019-12-12 17:25:35 3781 1904 Process 3781 1904 successfully forked.
2019-12-12 17:25:35 3781 1904 Successfully connected to Storage Manager.
2019-12-12 17:25:36 3779 1904 Begin cold level 0 restore logdbs (Storage Manager copy ID: 1749896841 0).
2019-12-12 17:25:37 3780 1904 Begin cold level 0 restore datadbs (Storage Manager copy ID: 1749896790 0).
2019-12-12 17:25:41 3779 1904 Completed cold level 0 restore logdbs.
2019-12-12 17:25:41 3779 1904 Process 3779 1904 completed.
2019-12-12 17:30:08 3781 1904 Begin cold level 0 restore idxdbs (Storage Manager copy ID: 1749896791 0).
2019-12-12 17:25:35 3778 1904 (-43296) WARNING: BAR_TIMEOUT Storage Manager Progress may be stalled.
2019-12-12 17:25:37 3780 1904 (-43296) WARNING: BAR_TIMEOUT Storage Manager Progress may be stalled.