127.0.0.1 PING 延迟.
$ ping 127.0.0.1
PING 127.0.0.1: (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=22 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=255 time=13 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=255 time=12 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=255 time=15 ms
PING 127.0.0.1: (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=22 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=255 time=13 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=255 time=12 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=255 time=15 ms
20同行回答
浏览4415
请参考别人的例子：
Re: Strange localhost ping problem
Dec 15, 2009 in response to purgatory
Hi,
I had the same problem and IBM recommended to lo_perf to 0 despite what performance tunning documents do say.
Kruso.
Log in to reply.
Re: Strange localhost ping problem
Dec 4, 2009 in response to purgatory
sounds a bit like a dns problem.
make sure your hosts file has local lookup addresses:
127.0.0.1 loopback localhost # loopback (lo0) name/address
and stick "hosts=local,bind" or "hosts=local4,bind4" in your /etc/netsvc.conf file - while there check for other statements that may be a problem...
Log in to reply.
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Re: Strange localhost ping problem
Dec 3, 2009 in response to SystemAdmin
Was there ever a solution to this problem? I just had one of my servers run into this same localhost ping issue, and our only solution was to reboot, which seems to have solved the issue for the time being. I would like to know if there is a better solution or if there is risk of this happening again.
5300-10-01-0921
checked 'netstat -rn' before and after reboot and their identical so if it's a route issue it's not showing with the normal command
Using etherchannel 2primary adapters with a backup adapter, tried failing back and forth with zero luck.
server is part of a Oracle RAC cluster so i'm curious if that has anything to do with the problem.
64 bytes from 127.0.0.1: icmp_seq=196 ttl=255 time=47 ms
64 bytes from 127.0.0.1: icmp_seq=197 ttl=255 time=160 ms
64 bytes from 127.0.0.1: icmp_seq=198 ttl=255 time=161 ms
64 bytes from 127.0.0.1: icmp_seq=199 ttl=255 time=163 ms
64 bytes from 127.0.0.1: icmp_seq=200 ttl=255 time=799 ms
64 bytes from 127.0.0.1: icmp_seq=201 ttl=255 time=1000 ms
64 bytes from 127.0.0.1: icmp_seq=202 ttl=255 time=551 ms
64 bytes from 127.0.0.1: icmp_seq=203 ttl=255 time=1000 ms
64 bytes from 127.0.0.1: icmp_seq=204 ttl=255 time=688 ms
64 bytes from 127.0.0.1: icmp_seq=205 ttl=255 time=385 ms
64 bytes from 127.0.0.1: icmp_seq=206 ttl=255 time=65 ms
64 bytes from 127.0.0.1: icmp_seq=207 ttl=255 time=301 ms
64 bytes from 127.0.0.1: icmp_seq=208 ttl=255 time=192 ms收起
Re: Strange localhost ping problem
Dec 15, 2009 in response to purgatory
Hi,
I had the same problem and IBM recommended to lo_perf to 0 despite what performance tunning documents do say.
Kruso.
Log in to reply.
Re: Strange localhost ping problem
Dec 4, 2009 in response to purgatory
sounds a bit like a dns problem.
make sure your hosts file has local lookup addresses:
127.0.0.1 loopback localhost # loopback (lo0) name/address
and stick "hosts=local,bind" or "hosts=local4,bind4" in your /etc/netsvc.conf file - while there check for other statements that may be a problem...
Log in to reply.
复制代码
Re: Strange localhost ping problem
Dec 3, 2009 in response to SystemAdmin
Was there ever a solution to this problem? I just had one of my servers run into this same localhost ping issue, and our only solution was to reboot, which seems to have solved the issue for the time being. I would like to know if there is a better solution or if there is risk of this happening again.
5300-10-01-0921
checked 'netstat -rn' before and after reboot and their identical so if it's a route issue it's not showing with the normal command
Using etherchannel 2primary adapters with a backup adapter, tried failing back and forth with zero luck.
server is part of a Oracle RAC cluster so i'm curious if that has anything to do with the problem.
64 bytes from 127.0.0.1: icmp_seq=196 ttl=255 time=47 ms
64 bytes from 127.0.0.1: icmp_seq=197 ttl=255 time=160 ms
64 bytes from 127.0.0.1: icmp_seq=198 ttl=255 time=161 ms
64 bytes from 127.0.0.1: icmp_seq=199 ttl=255 time=163 ms
64 bytes from 127.0.0.1: icmp_seq=200 ttl=255 time=799 ms
64 bytes from 127.0.0.1: icmp_seq=201 ttl=255 time=1000 ms
64 bytes from 127.0.0.1: icmp_seq=202 ttl=255 time=551 ms
64 bytes from 127.0.0.1: icmp_seq=203 ttl=255 time=1000 ms
64 bytes from 127.0.0.1: icmp_seq=204 ttl=255 time=688 ms
64 bytes from 127.0.0.1: icmp_seq=205 ttl=255 time=385 ms
64 bytes from 127.0.0.1: icmp_seq=206 ttl=255 time=65 ms
64 bytes from 127.0.0.1: icmp_seq=207 ttl=255 time=301 ms
64 bytes from 127.0.0.1: icmp_seq=208 ttl=255 time=192 ms收起
浏览3531
手动执行下rpc.statd,如果有报错，可能是不正确的域名解析或HACMP配置错误，首先确认hosts文件中localhost、loopback和主机名对应正确的IP，再确认HACMP的网络，校验同步是否出错，如果出错，需要正确配置HACMP，再运行上面的命令收起
浏览3440
回复 14# zhenzongjian
$ root vmstat 1 10
System configuration: lcpu=16 mem=45056MB
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
4 0 6493802 1700336 0 0 0 0 0 0 367 181884 1254 29 2 69 0
1 0 6499818 1694319 0 0 0 0 0 0 1511 15681 4989 16 2 82 0
1 0 6502373 1691764 0 0 0 0 0 0 1238 15433 4375 16 2 82 0
1 0 6506747 1687390 0 0 0 0 0 0 892 12628 3585 14 2 84 0
1 0 6508625 1685512 0 0 0 0 0 0 407 6466 2119 12 2 86 0
aix 系统6.1.6, 有个数据库的client, 有ha版本6.1
8个处理器,45gb内存.非虚拟环境.机器使用不繁忙. 没有改动过.ping 延迟最近发现的.也许以前就有.
你需要啥信息可以提出来.该检查的我也检查的差不多了.收起
$ root vmstat 1 10
System configuration: lcpu=16 mem=45056MB
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
4 0 6493802 1700336 0 0 0 0 0 0 367 181884 1254 29 2 69 0
1 0 6499818 1694319 0 0 0 0 0 0 1511 15681 4989 16 2 82 0
1 0 6502373 1691764 0 0 0 0 0 0 1238 15433 4375 16 2 82 0
1 0 6506747 1687390 0 0 0 0 0 0 892 12628 3585 14 2 84 0
1 0 6508625 1685512 0 0 0 0 0 0 407 6466 2119 12 2 86 0
aix 系统6.1.6, 有个数据库的client, 有ha版本6.1
8个处理器,45gb内存.非虚拟环境.机器使用不繁忙. 没有改动过.ping 延迟最近发现的.也许以前就有.
你需要啥信息可以提出来.该检查的我也检查的差不多了.收起
浏览3414
浏览3383