[horde] Horde ActiveSync - every few seconds disk write of the mysql database

[Samuel Wolf]

Hi,

I wondering why my small home Horde server has every few seconds a ssd access.
Find out after some debugging with top/iostat/dstat it is a write  
operation of the database.

Nobody use the Horde Web interface at this time, only Smartphones via  
ActiveSync are connected. As soon I stop the apache, the write access  
stop as well.

Is there something with ActiveSync which need every few seconds a  
insert/update in the database?

Samuel


----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--
usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw
   1   1  89  10   0   0|   0    96k|  66B  444B|   0     0 | 100   352
   0   0 100   0   0   0|   0     0 | 192B  872B|   0     0 |  57   114
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  38    73
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  52   100
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  45    85
   0   0  96   4   0   0|   0     0 |  66B  350B|   0     0 |  55   123
   2   0  93   5   0   0|   0    92k|  66B  350B|   0     0 |  95   297
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  50    95
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  43    81
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  54   111
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  39    71
   2   1  91   7   0   0|   0   108k|  66B  350B|   0     0 | 112   360
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  43    80
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  49   101
   0   0 100   0   0   0|   0     0 |   0  1400B|   0     0 |  45    79
   0   0 100   0   0   0|   0     0 | 300B  334B|   0     0 |  46    98
   2   0  90   8   0   0|   0   108k|  66B  350B|   0     0 | 107   335
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  47   102
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  37    75
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  56   125
   0   0 100   0   0   0|   0     0 |  66B  350B|   0     0 |  43    82
   2   0  93   5   0   0|   0   100k|  66B  350B|   0     0 | 105   319