Re: clients-per-query message is harmful or not?
MontyRee wrote: > > > So thanks for your kind reply. > > I'm curious the meaning of "given name". > if clients query like below, > > # example.com zone > > abc.example.com/A > www.abc.example.com/A > exmaple.com/MX The above are all different To be 'the same' both the label (e.g. abc.example.com) and the type (e.g. 'MX') being queried need to match. > > above queries are same query or diffferent one? > > and is there any method that which > name queries are much? > ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
RE: clients-per-query message is harmful or not?
So thanks for your kind reply. I'm curious the meaning of "given name". if clients query like below, # example.com zone abc.example.com/A www.abc.example.com/A exmaple.com/MX above queries are same query or diffferent one? and is there any method that which name queries are much? Thanks in advance. >> >> Hello, all. >> >> my system is centos 4.x, bind 9.5.1-P3 and only recursion is allowed from >> some ranges. >> >> I can see lots of messages like below. >> so if I didn't set any clients-per-query value,some clients' queries may be >> droppped or not? > > clients-per-query is designed to prevent the nameserver being > overwhelmed by a given query that doesn't resolve. It sets the > number of simultanious clients that are acutally recursing on a > given name. It value is increased if there is a successful resolution > of that query after dropping some clients then slowly decays over time. > Note UDP clients are expected to retry. > > clients-per-query reflects how many clients ask for a busy name/type in > the time it takes to resolve that name/type. If it takes 200 ms resolve > the query and you need 20 clients-per-query then the name/type is being > asked for around 100 times a second. > >> If some queries can be dropped,I want to set like "clients-per-query 0". > > You actually want to set clients-per-query to around 20 based on > these logs, the default is 10. > >> 05-Oct-2009 16:04:46.228 resolver: notice: clients-per-query decreased to 14 >> 05-Oct-2009 16:14:47.337 resolver: notice: clients-per-query increased to 19 >> 05-Oct-2009 16:34:47.338 resolver: notice: clients-per-query decreased to 18 >> 05-Oct-2009 16:54:47.339 resolver: notice: clients-per-query decreased to 17 >> 05-Oct-2009 17:01:55.424 resolver: notice: clients-per-query increased to 22 >> 05-Oct-2009 20:20:26.252 resolver: notice: clients-per-query increased to 15 >> 05-Oct-2009 20:40:26.253 resolver: notice: clients-per-query decreased to 14 >> 05-Oct-2009 21:00:26.253 resolver: notice: clients-per-query decreased to 13 >> 05-Oct-2009 21:11:26.298 resolver: notice: clients-per-query increased to 15 >> >> >> >> Thanks in advance. > -- > Mark Andrews, ISC > 1 Seymour St., Dundas Valley, NSW 2117, Australia > PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org > _ 새로운 Windows 7: 일상 작업을 단순화하세요. 여러분에게 맞는 최상의 PC를 찾으세요. http://windows.microsoft.com/shop ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: clients-per-query message is harmful or not?
In message , MontyRee writes: > > Hello, all. > > my system is centos 4.x, bind 9.5.1-P3 and only recursion is allowed from > some ranges. > > I can see lots of messages like below. > so if I didn't set any clients-per-query value,some clients' queries may be > droppped or not? clients-per-query is designed to prevent the nameserver being overwhelmed by a given query that doesn't resolve. It sets the number of simultanious clients that are acutally recursing on a given name. It value is increased if there is a successful resolution of that query after dropping some clients then slowly decays over time. Note UDP clients are expected to retry. clients-per-query reflects how many clients ask for a busy name/type in the time it takes to resolve that name/type. If it takes 200 ms resolve the query and you need 20 clients-per-query then the name/type is being asked for around 100 times a second. > If some queries can be dropped,I want to set like "clients-per-query 0". You actually want to set clients-per-query to around 20 based on these logs, the default is 10. > 05-Oct-2009 16:04:46.228 resolver: notice: clients-per-query decreased to 14 > 05-Oct-2009 16:14:47.337 resolver: notice: clients-per-query increased to 19 > 05-Oct-2009 16:34:47.338 resolver: notice: clients-per-query decreased to 18 > 05-Oct-2009 16:54:47.339 resolver: notice: clients-per-query decreased to 17 > 05-Oct-2009 17:01:55.424 resolver: notice: clients-per-query increased to 22 > 05-Oct-2009 20:20:26.252 resolver: notice: clients-per-query increased to 15 > 05-Oct-2009 20:40:26.253 resolver: notice: clients-per-query decreased to 14 > 05-Oct-2009 21:00:26.253 resolver: notice: clients-per-query decreased to 13 > 05-Oct-2009 21:11:26.298 resolver: notice: clients-per-query increased to 15 > > > > Thanks in advance. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
