varnish 3.0.4version may be have memory leak

[★阊阖 ラ]

dear:
(1) eat my memory
      i use varnish 3.0.4 version, and find that varnish eat all my memory at last. 
      taking the picture for example, the varnish eat my 3G memory now, and i find the Transient part is more than 2G(no http request sometimes and graces are default)?

(2)session_herd also increase too fast. In this case, the n_sess_mem increase too fast untill the max value, then varnish can't work
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