Looking at the free memory/swap sar stats:-

00:00:00 freemem freeswap
23:30:00 1229676 50753852
23:35:00 1230277 50778877
23:40:00 1186372 50040720
23:45:00  840589 44463854
23:50:01   59762 22711761
23:55:01   60871 13228370
00:05:01   63081  6928788
00:10:01   63160  6511357
[...]
04:15:28   35314  4558492
04:26:49   26232  4531772
04:35:17   15879  4625317

So in that period it chewed up all physical RAM and about 27G of swap.  In the same period the paging rates go nuts:-
00:00:00  pgout/s ppgout/s pgfree/s pgscan/s %ufs_ipf
23:35:00     0.06     0.07     0.06     0.00     0.00
23:40:00     0.05     0.08     0.08     0.00     0.00
23:45:00     0.06     0.07     0.25     1.39     0.00
23:50:01   327.91  2125.82  3667.46 14256.52     0.00
23:55:01   180.98  1861.13  1914.00 17752.15     0.00
00:05:01   474.28   845.27   847.10  4823.71     0.00
00:10:01   351.71   644.99   649.32  1353.48     0.00
00:15:01   725.20  1229.70  1262.38  6071.81     0.00
[...]
04:15:28   612.09   612.13  1295.89 144160.61     0.00
04:26:49   301.97   301.98   892.26 165320.53     0.00
04:35:17    23.62    23.64   428.92 235926.64     0.00