svn server connection goes for couple of days

Issue

• When checked the ps output, there are many svn servers that goes for several days even though actual used time is just some seconds.

4 S svn      17614     1  0  75   0 - 45019 -      Apr03 ?        00:00:05 svnserve -i -r /cvs/svn/
4 S svn      17627     1  0  75   0 - 27618 -      Apr02 ?        00:00:00 svnserve -i -r /cvs/svn/
4 S svn      17742     1  0  75   0 - 32774 -      Apr03 ?        00:00:02 svnserve -i -r /cvs/svn/
...
4 S svn      18573     1  0  75   0 - 27360 -      Apr03 ?        00:00:00 svnserve -i -r /cvs/svn/
4 S svn      18675     1  0  75   0 - 27531 -      Mar26 ?        00:00:00 svnserve -i -r /cvs/svn/