[qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-26 Thread Eric Shubert
On 08/26/2013 08:07 PM, ChandranManikandan wrote: Hi All, I had used this command and shows below result. #free total used free sharedbuffers cached Mem: 103704169965280 405136 0 2264288775244 -/+ buffers/cache: 963608940

[qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-27 Thread Eric Shubert
On 08/27/2013 06:59 AM, Dan McAllister wrote: Eric is spot-on it is a DNS issue (usually because the DNS name you use [or IP address] in the SSH client command to connect, doesn't resolve backwards). The easiest fix is on the server end: Change the default SSHD setting to NOT attempt DNS r

[qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-27 Thread Eric Shubert
I just did this, but I'm sorry to say that it didn't solve my problem entirely. After a few tests, it appears that every other login is quick, and every other login has a delay (20 seconds or so). Seems persistent in that regard (I did a dozen or so tests). Perhaps a nss config issue? Thanks.

[qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-27 Thread Eric Shubert
On 08/27/2013 08:26 AM, Dan McAllister wrote: On 8/27/2013 10:35 AM, Eric Shubert wrote: I just did this, but I'm sorry to say that it didn't solve my problem entirely. After a few tests, it appears that every other login is quick, and every other login has a delay (20 seconds or so). Seems pers

[qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-28 Thread Eric Shubert
The commented lines indicate the default values. You need an uncommented line: UseDNS no You also need: GSSAPIAuthentication no Once you've made those changes, you need to restart sshd: # service sshd restart -- -Eric 'shubes' On 08/28/2013 07:18 PM, ChandranManikandan wrote: Hi All, Use Dns

Re: [qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-27 Thread ChandranManikandan
Thanks Eric. On Tue, Aug 27, 2013 at 11:40 AM, Eric Shubert wrote: > On 08/26/2013 08:07 PM, ChandranManikandan wrote: > >> Hi All, >> I had used this command and shows below result. >> #free >> total used free sharedbuffers cached >> Mem: 10370416

Re: [qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-27 Thread Dan McAllister
Eric is spot-on it is a DNS issue (usually because the DNS name you use [or IP address] in the SSH client command to connect, doesn't resolve backwards). The easiest fix is on the server end: Change the default SSHD setting to NOT attempt DNS reverse lookups. The file is: */etc/ssh/sshd_c

Re: [qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-27 Thread Dan McAllister
In anticipation of the next response: - please execute a restart of the SSH service after you have completed the change below. NOTE: In stock COS installs, the UseDNS entry is commented out and has the default Yes value -- un-comment it (remove the leading # character) & change the Yes to a

Re: [qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-27 Thread Dan McAllister
On 8/27/2013 10:35 AM, Eric Shubert wrote: I just did this, but I'm sorry to say that it didn't solve my problem entirely. After a few tests, it appears that every other login is quick, and every other login has a delay (20 seconds or so). Seems persistent in that regard (I did a dozen or so te

Re: [qmailtoaster] Re: How to remove cached and buffer memory in Centos server

2013-08-28 Thread ChandranManikandan
Hi All, Use Dns Yes is already commented in this file. But still am seeing this message. Can you help me. On Tue, Aug 27, 2013 at 11:52 PM, Eric Shubert wrote: > On 08/27/2013 08:26 AM, Dan McAllister wrote: > >> On 8/27/2013 10:35 AM, Eric Shubert wrote: >> >>> I just did this, but I'm sorry t