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Apache, 20+ long running connections with little memory usage


Recommendations on VM memory allocation General/Hyper-VApache crashing VPS - need to reduce memory usageUnexplained cache RAM drops on Linux machineSet total memory limit with TorqueRandom server load spikes, number of tasks doubles, CPU/Memory consistentHigh CPU usage by unknown Apache processesUnable to diagnose downtime / memory issues with Apache and mod_wsgiReducing Apache Memory usage and Average Process Size ValueHow to determine if EC2 LAMP instance is network-bound?How to deal with out of memory issues on multi user systems?













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I have a small server, 2 GB memory (an AWS t2.small) that I would like to run cron jobs on. These crons run by specific URLs getting hit (an AWS setup I can’t change), and take maybe 1 – 2 minutes each to complete.



At some points during the day there are ~20 crons that run at exactly the same time. Predictably, this is causing memory usage to spike and shut things down. I reduced MaxClients to 6, which fixed the memory usage spike problem, but this is causing some crons to silently not be run.



From my understanding of MaxClients, these crons are silently failing because only 6 connections are allowed at one time? Is there any way my little server can handle these spikes of 20 connections and keep memory usage stable? It seems like my goal would be "allow 20+ connections, but only allocate a small amount of memory to each".



Thanks for your help









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    I have a small server, 2 GB memory (an AWS t2.small) that I would like to run cron jobs on. These crons run by specific URLs getting hit (an AWS setup I can’t change), and take maybe 1 – 2 minutes each to complete.



    At some points during the day there are ~20 crons that run at exactly the same time. Predictably, this is causing memory usage to spike and shut things down. I reduced MaxClients to 6, which fixed the memory usage spike problem, but this is causing some crons to silently not be run.



    From my understanding of MaxClients, these crons are silently failing because only 6 connections are allowed at one time? Is there any way my little server can handle these spikes of 20 connections and keep memory usage stable? It seems like my goal would be "allow 20+ connections, but only allocate a small amount of memory to each".



    Thanks for your help









    share







    New contributor




    KayakinKoder is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      0








      I have a small server, 2 GB memory (an AWS t2.small) that I would like to run cron jobs on. These crons run by specific URLs getting hit (an AWS setup I can’t change), and take maybe 1 – 2 minutes each to complete.



      At some points during the day there are ~20 crons that run at exactly the same time. Predictably, this is causing memory usage to spike and shut things down. I reduced MaxClients to 6, which fixed the memory usage spike problem, but this is causing some crons to silently not be run.



      From my understanding of MaxClients, these crons are silently failing because only 6 connections are allowed at one time? Is there any way my little server can handle these spikes of 20 connections and keep memory usage stable? It seems like my goal would be "allow 20+ connections, but only allocate a small amount of memory to each".



      Thanks for your help









      share







      New contributor




      KayakinKoder is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I have a small server, 2 GB memory (an AWS t2.small) that I would like to run cron jobs on. These crons run by specific URLs getting hit (an AWS setup I can’t change), and take maybe 1 – 2 minutes each to complete.



      At some points during the day there are ~20 crons that run at exactly the same time. Predictably, this is causing memory usage to spike and shut things down. I reduced MaxClients to 6, which fixed the memory usage spike problem, but this is causing some crons to silently not be run.



      From my understanding of MaxClients, these crons are silently failing because only 6 connections are allowed at one time? Is there any way my little server can handle these spikes of 20 connections and keep memory usage stable? It seems like my goal would be "allow 20+ connections, but only allocate a small amount of memory to each".



      Thanks for your help







      apache-2.4 memory





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      KayakinKoder is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      share







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      KayakinKoder is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 8 mins ago









      KayakinKoderKayakinKoder

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      KayakinKoder is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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