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On 01/04/15 15:20, Mick wrote: |
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> On Sunday 04 Jan 2015 16:06:50 Urs Schütz wrote: |
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>> Hi list |
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>> |
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>> While hunting down slow startx times (12-16s instead the usual 2-5s) I |
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>> found that "hostname -f" tries to resolve the hostname. This is a slow |
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>> process (timeout?): |
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>> |
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>> urs@cadd ~ $ time hostname -v |
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>> gethostname()=`cadd' |
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>> cadd |
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>> |
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>> real 0m0.001s |
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>> user 0m0.000s |
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>> sys 0m0.001s |
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>> |
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>> urs@cadd ~ $ time hostname -v -f |
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>> gethostname()=`cadd' |
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>> Resolving `cadd' ... |
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>> Result: h_name=`cadd' |
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>> Result: h_addr_list=`127.0.0.1' |
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>> cadd |
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>> |
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>> real 0m10.011s |
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>> user 0m0.000s |
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>> sys 0m0.001s |
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>> |
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>> urs@cadd ~ $ man hostname |
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>> ...snip... |
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>> -f, --fqdn, --long |
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>> Display the FQDN (Fully Qualified Domain Name). A FQDN |
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>> consists |
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>> of a short host name and the DNS domain name. Unless |
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>> you are |
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>> using bind or NIS for host lookups you can change the |
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>> FQDN and |
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>> the DNS domain name (which is part of the FQDN) |
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>> in the |
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>> /etc/hosts file. |
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>> ...snip... |
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>> |
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>> My /etc/hosts.conf orders hosts before bind: |
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>> urs@cadd ~ $ grep order /etc/host.conf |
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>> # recognized are order, trim, mdns, multi, nospoof, spoof, and reorder. |
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>> order hosts, bind |
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>> |
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>> I do not run any NIS or bind services. |
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>> |
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>> I solved the slow startx by replacing "hostname -f" by "hostname" in the |
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>> /usr/bin/startx script, but still feel that I'm missing the real cause |
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>> for the slow hostname lookup. |
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>> |
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>> I do not have a DNS domain name definition in /etc/hosts. |
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>> I do run networkmanager. |
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>> Any hints where to search? |
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>> |
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>> What is the recommended way for /etc/hosts? I'm at a simple home |
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>> network, behind a NAT cable modem, and do not have a dns domain name. |
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>> |
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>> Thanks for any hints. |
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>> Urs |
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> |
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> In my /etc/hosts I have something like this: |
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> |
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> # IPv4 and IPv6 localhost aliases |
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> 127.0.0.1 cad.homeLAN localhost cad |
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> ::1 cad.homeLAN localhost cad |
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> |
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> See if this solves your problem. |
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> |
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> PS. I remember a thread in this M/L about the correct way to configure a |
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> domain name and why how the Gentoo Handbook was wrong. I think there was a |
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> bug opened about it, too. |
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> |
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|
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Setting up /etc/hosts exactly as above did resolve the slow hostname -f |
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lookup. |
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|
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urs@cadd ~ $ time hostname -v -f |
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gethostname()=`cadd' |
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Resolving `cadd' ... |
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Result: h_name=`cadd.homeLAN' |
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Result: h_aliases=`localhost' |
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Result: h_aliases=`cadd' |
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Result: h_addr_list=`::1' |
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cadd.homeLAN |
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|
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real 0m0.001s |
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user 0m0.000s |
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sys 0m0.000s |
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|
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:-) Thanks for your help. |
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Urs |
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