Hi Wouter,thanks very much for your reply. I tried the method you mentioned,here is the info I got from the log: debug: cache memory msg=16528 rrset=33040 infra=672 val=24888 This info keeps the same from the start of the unbound(I have only about 5 records in unbound). I also found the value of mem.total.sbrk printed by "unbound-control stats" keeps growing.The item "mem.total.sbrk" is an estimate of the heap size of unbound in bytes,it is close to the memory used by unbound. I have a script keeps recording mem.total.sbrk in a file,and found when mem.total.sbrk grew to 2017873920,unbound was killed by system(My server has a 2G memory). Unbound runs in a Gentoo Linux with 2.6.23 kernel,does the problem relate to the OS? Thanks & Best regards, Tao Ma --- 09年9月10日，周四, W.C.A. Wijngaards <wouter at NLnetLabs.nl> 写道： 发件人: W.C.A. Wijngaards <wouter at NLnetLabs.nl> 主题: Re: [Unbound-users] 回复： Re: Is there any memory leak in unbound? 收件人: "Tao Ma" <matao_reg at yahoo.com.cn> 抄送: "Paul Wouters" <paul at xelerance.com>, unbound-users at unbound.net 日期: 2009年9月10日,周四,下午10:25 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Tao Ma, The memory statistics that unbound makes can help? It prints them into the log file (depending on verbosity level and --enable-debug to configure) like this: debug: cache memory msg=1620127 rrset=2964258 infra=738306 val=128832 Also the memory statistics are printed when you enable extended statistics and do unbound-control stats, like this: mem.cache.rrset=2980222 mem.cache.message=1633031 mem.mod.iterator=16460 mem.mod.validator=130126 Best regards, Wouter ___________________________________________________________ 好玩贺卡等你发，邮箱贺卡全新上线！ http://card.mail.cn.yahoo.com/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://unbound.nlnetlabs.nl/pipermail/unbound-users/attachments/20090911/3e18171c/attachment.htm>