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seen Jul 2 at 16:17

Sep
9
comment Why is my concurrency capacity so low for my web app on a LAMP EC2 instance?
OK, I added vmstat results under the ab test results.
Sep
9
revised Why is my concurrency capacity so low for my web app on a LAMP EC2 instance?
added 270 characters in body
Sep
7
asked Why is my concurrency capacity so low for my web app on a LAMP EC2 instance?
May
22
awarded  Supporter
Dec
21
awarded  Teacher
Dec
21
awarded  Scholar
Dec
21
accepted Server load spikes several times a day, load average for the past month is 5 times the load average all year
Dec
21
answered Server load spikes several times a day, load average for the past month is 5 times the load average all year
Jun
24
comment Server load spikes several times a day, load average for the past month is 5 times the load average all year
The problem is there is no "spike period" in that traffic only varies by 10-20% throughout the day. Remember, the load is consistently high all day, and the daily average for the past month is at least 5x the daily average for the rest of the past year (with no change in overall traffic). So I am concerned. If I did not have a script that siphoned off excess traffic when the load got too high, the server would eventually crash.
Jun
23
revised Server load spikes several times a day, load average for the past month is 5 times the load average all year
added 7 characters in body
Jun
23
comment Server load spikes several times a day, load average for the past month is 5 times the load average all year
The database server looks OK from a load and CPU standpoint. When I look at the MySQL show processlist, however, there are always 5-20 connections from the Wordpress MySQL user, nearly all of them with NULL (no query firing), and a few that even sleep for 10, 30, or 60 seconds (MySQL kills them at 60). Could this be a lead?
Jun
22
revised Server load spikes several times a day, load average for the past month is 5 times the load average all year
added 30 characters in body
Jun
22
awarded  Editor
Jun
22
revised Server load spikes several times a day, load average for the past month is 5 times the load average all year
added 1963 characters in body
Jun
22
awarded  Student
Jun
21
asked Server load spikes several times a day, load average for the past month is 5 times the load average all year