[CentOS] sendmail and rbl blocking - generating statistics

[John Summerfield]

Ryan Simpkins wrote:
> On Wed, March 14, 2007 14:08, Will McDonald wrote (trimmed):
>> On 14/03/07, Ryan Simpkins <centos at ryansimpkins.com> wrote:
>>> Try doing a simple 'cat /var/log/maillog | grep -c check_relay'
>> You can avoid the unnecessary 'cat' by just passing the filename to grep directly:
>>
>> # grep -c 'checK_relay.*spamhaus' /var/log/maillog
>> # grep -c 'checK_relay.*spamcop' /var/log/maillog
>> # grep -c 'checK_relay.*njabl' /var/log/maillog
>>
>> Would probably be more efficient and faster, you can test with 'time' to verify
> this. You're spawning one process 'grep', instead of three seperate processes,
> 'cat, 'grep' and 'grep' again.
> 
> Am I using time right to measure it?
No, you're timing the cat only.

> 
> # time cat /var/log/maillog | grep check_relay | grep -c njabl
> 8
> 
> real    0m0.299s
> user    0m0.289s
> sys     0m0.009s
> 

Too short for useful measurement with these tools.


-- 

Cheers
John

-- spambait
1aaaaaaa at coco.merseine.nu  Z1aaaaaaa at coco.merseine.nu

Please do not reply off-list