• Please be aware: Kaspersky Anti-Virus has been deprecated
    With the upgrade to Plesk Obsidian 18.0.64, "Kaspersky Anti-Virus for Servers" will be automatically removed from the servers it is installed on. We recommend that you migrate to Sophos Anti-Virus for Servers.
  • The Horde webmail has been deprecated. Its complete removal is scheduled for April 2025. For details and recommended actions, see the Feature and Deprecation Plan.
  • We’re working on enhancing the Monitoring feature in Plesk, and we could really use your expertise! If you’re open to sharing your experiences with server and website monitoring or providing feedback, we’d love to have a one-hour online meeting with you.

memory usage

  1. A

    Question named / bind - max-cache-size

    Hi, Attempting to limit memory usage fo Bind on a Plesk / Centos box. I've read about the max-cache-size option. I've then created a /etc/named-user-options.conf with following content: max-cache-size 32m; Nevertheless, doesn't appear to do anything, after restart and running for about 10min...
  2. S

    Question High server resource and mysql error

    Hi, Can anyone advise on the below error? [2023-06-08 17:18:00.922] 22273:64819cba84ccd ERR [panel] DB query failed: SQLSTATE[HY000] [2002] Connection refused: 0: /usr/local/psa/admin/plib/Db/Adapter/Pdo/Mysql.php:79 Db_Adapter_Pdo_Mysql->query(string 'SET sql_mode = ''') 1...
  3. Nextgen-Networks

    Question High memory consumption while uploading Plesk backup to external storage

    When transferring Plesk backups to external storage targets, an unusually high memory load on the Plesk server can be observed. Apparently, the entire available RAM is used for transferring the backups (see also screenshot from monitoring). This leads to a massively slowed down overall system...
  4. Quinten

    Issue I keep getting "Cannot allocate memory" / memory related errors

    Goodmorning, For the last couple of days now i have been getting alot of memory related errors. The thing is i have been moving websites off that server actually which should free memory (I did not have these memory errors before as you can see on the screenshot below this morning a few of my...
  5. Quinten

    Question How do i force my server to use more MEMORY and less SWAP?

    Hello, I just have a quick question about the memory usage and swap of one of my servers. My swapiness is set at 10 yet my memory usage is so low how does this happen? (see attached image) I have been told that swap needs to be on for Plesk , is still still accurate info?
    • Quinten
    • Thread
    • memory memory cache memory usage obsidian 18.0.46 plesk ram swap swap usage swappiness
    • Replies: 17
    • Forum: Plesk Obsidian for Linux
  6. S

    Issue Unexpected Peak of memory

    Hi there. We're experiencing strange memory behavior on our system. A few hours ago, our RAM usage started to grow linearly over time. Checked on Performance monitor. The only resource affected is the Apache webserver. The rest of the services seem to be working fine. 1 week graphic: 1 day...
  7. R

    Question Memory usage after backup

    Hello, I would like to request your help regarding memory usage, could not find any relevant things about what i encounter. I recently did some performance tuning on MySQL in order to lower its memory usage Server specifications : OS : Debian 9.13 Plesk version : Plesk Obsidian Version...
  8. alecaus

    Question About Memory Slab Growing up to occupy all memory

    Honestly, I don't know if this is the best place to post this. And if not, if you can point me to an ideal place, I appreciate it. I don't know if it's a Plesk problem, I confess I don't believe it is, but there it goes. The slab memory keeps growing on the server, until it takes up all the...
  9. Z

    Question I want to suppress the use of Apache memory

    I have been receiving frequent server alerts from Plesk Mobile since two weeks ago. I made a Plesk-related update that was released at the same time as the update to CentOS 7.7 two weeks ago. My server currently uses only Nextcloud software. And it runs on Nginx. And at most 10 people use my...
  10. M

    Issue Increasing memory usage after local backup

    Hi, I'm experiencing a very strange situation with my Plesk. Every night my Plesk panel runs a complete backup of the server and, after that backup, the total memory usage starts increasing for all over the day up to the next backup. What warns me is the fact that every night the basal level...
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