计算时突然跨越很长的时间并出现flush i/o buffers 是怎么回事

如下图所示 默认设置是5000t来一次flush buffers 但是算着算着就不写入d3plot了 而且停在1000 flush i/o buffers
有大神知道怎么回事么 先谢谢了

4886 t 1.0873E-01 dt 2.23E-05 write d3plot file
4943 t 1.1000E-01 dt 2.23E-05 write d3plot file
4999 t 1.1124E-01 dt 2.23E-05 write d3plot file
5000 t 1.1127E-01 dt 2.23E-05 flush i/o buffers
5055 t 1.1249E-01 dt 2.23E-05 write d3plot file
5111 t 1.1374E-01 dt 2.23E-05 write d3plot file
5167 t 1.1498E-01 dt 2.23E-05 write d3plot file
5223 t 1.1623E-01 dt 2.23E-05 write d3plot file
5280 t 1.1750E-01 dt 2.23E-05 write d3plot file
5336 t 1.1874E-01 dt 2.23E-05 write d3plot file
5392 t 1.1999E-01 dt 2.23E-05 write d3plot file
5448 t 1.2124E-01 dt 2.23E-05 write d3plot file
5504 t 1.2248E-01 dt 2.22E-05 write d3plot file
5560 t 1.2373E-01 dt 2.23E-05 write d3plot file
5617 t 1.2500E-01 dt 2.22E-05 write d3plot file
5673 t 1.2624E-01 dt 2.22E-05 write d3plot file
5729 t 1.2749E-01 dt 2.22E-05 write d3plot file
5785 t 1.2873E-01 dt 2.22E-05 write d3plot file
5842 t 1.2999E-01 dt 2.22E-05 write d3plot file
5898 t 1.3123E-01 dt 2.22E-05 write d3plot file
5955 t 1.3250E-01 dt 2.22E-05 write d3plot file
6011 t 1.3374E-01 dt 2.22E-05 write d3plot file
6067 t 1.3498E-01 dt 2.21E-05 write d3plot file
6124 t 1.3625E-01 dt 2.22E-05 write d3plot file
6180 t 1.3749E-01 dt 2.22E-05 write d3plot file
6236 t 1.3873E-01 dt 2.22E-05 write d3plot file
6293 t 1.4000E-01 dt 2.22E-05 write d3plot file
6349 t 1.4124E-01 dt 2.22E-05 write d3plot file
6405 t 1.4249E-01 dt 2.22E-05 write d3plot file
6461 t 1.4373E-01 dt 2.22E-05 write d3plot file
6518 t 1.4500E-01 dt 2.22E-05 write d3plot file
10000 t 1.4579E-01 dt 4.20E-08 flush i/o buffers