Where is the bottleneck ?

Comments

• eva2000 Veteran

  June 2021 edited June 2021

  @yokowasis said: But admin can upload 100 images at one batch, or no images at all.

  might help for such https://kinsta.com/knowledgebase/bulk-upload-files-wordpress-media-library-ftp/

  or via wp-cli https://developer.wordpress.org/cli/commands/media/import/
• yokowasis Member

  June 2021

  @jsg said:
  We can't really help you/provide good concrete advice with the very limited info piecemeal you provide. So, if you want to get good and useful advice for your situation you must tell us much more.

  Thanks. I think I got the help I needed. The database is fine probably. I think the process of writing the image into the disk that hog the IO.

  Even a normal cp / backup can bring the websites down.

  HDD

  root@Ubuntu-1804-bionic-64-minimal /data # dd if=/dev/zero of=test2.img bs=512 count=1000 oflag=dsync
  1000+0 records in
  1000+0 records out
  512000 bytes (512 kB, 500 KiB) copied, 40.0472 s, 12.8 kB/s
  root@Ubuntu-1804-bionic-64-minimal /data #
  

  RAID-0 NVME

  root@Ubuntu-1804-bionic-64-minimal /mnt/md3 # dd if=/dev/zero of=test2.img bs=512 count=1000 oflag=dsync
  1000+0 records in
  1000+0 records out
  512000 bytes (512 kB, 500 KiB) copied, 1.29931 s, 394 kB/s
  root@Ubuntu-1804-bionic-64-minimal /mnt/md3 #
  
• notarobo Barred

  June 2021 edited June 2021

  why not NVME RAID10.
• yokowasis Member

  June 2021

  @notarobo said:
  why not NVME RAID10.

  too many disk