kevin39

Best Cache Option Proxmox

The best cache option in Proxmox depends on your storage type, performance needs, and data safety requirements.

• For local SSDs or fast storage with a BBU-backed RAID controller: Use cache=writeback for best performance, especially for write-heavy workloads. It offers high IOPS but carries a risk of data loss during power failure. Ensure you have a UPS and proper backup.

• For SANs, NFS, or remote storage (e.g., Synology, Ceph): Use cache=none or cache=writethrough. Most SANs already have internal write-back caching, so enabling writeback at the Proxmox level provides little benefit and may increase risk. cache=none bypasses the host page cache, reducing overhead and improving consistency with remote storage.

• For ZFS storage: cache=none is often recommended, as ZFS already manages its own ARC (cache). Enabling additional caching can cause performance degradation due to double buffering.

kevin39

# Note: You will want to add the snippet: `include "pagespeed-requirement.vcl";` above your `vcl_recv` in the default.vcl file.

sub vcl_recv {
    call pagespeed_capability_detection;
}

# Function derived from requirements here https://modpagespeed.com/doc/downstream-caching#ps-capabilitylist
# Additional detection logic for crawlers, tablet and mobile devices.
sub pagespeed_capability_detection {
    if (req.http.User-Agent ~ "(?i)Chrome/[3][2-9]+\.|Chrome/[4-9][0-9]+\.|Chrome/[0-9]{3,}\.") {

kevin39

sub vcl_recv {
    ...
    if (req.http.Accept-Encoding) {
      if (req.url ~ "\.(jpeg|jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|flv)$") {
        unset req.http.Accept-Encoding;
      } elsif (req.http.Accept-Encoding ~ "gzip") {
        set req.http.Accept-Encoding = "gzip";
      } elsif (req.http.Accept-Encoding ~ "deflate" &&
        req.http.user-agent !~ "MSIE") {
        set req.http.Accept-Encoding = "deflate";

kevin39

# you need these installed if you want to:
sudo apt-get update
# resize images
sudo apt-get install imagemagick -y
# compress jpg and png files
sudo apt-get install jpegoptim optipng
# compress video's
sudo apt-get install ffmpeg

kevin39

elastic:
    image: elasticsearch

haproxy:
    image: haproxy
    volumes:
        - ${PWD}:/usr/local/etc/haproxy
    links:
        - elastic
    ports:

kevin39

sysctl fs.inotify.max_user_instances=256

kevin39

pct list |awk 'FNR > 1 {print "VMID=" $1 " - " $3}'

kevin39

Signification des variables :

<LOGIN> = L'utilisateur autorisé à effectuer l'action (ex: admin)
<PASS> = Votre mot de passe 
<IP> = L'adresse IP de votre Home Center, il est donc nécessaire de lui attribuer une IP fixe (via la rédervation de bail de votre box / routeur Internet)
<ID> = identifiant du module Z-Wave (comment trouver l'ID d'un module ?)
name = action (ex: turnOff, turnOn, setValue)
<Value> = valeur (ex: niveau de variation à 39 % --> arg1=39 )  
Exemples :

kevin39

$ numactl --hardware | grep available

# If greater than 2 : NUMA is supported

kevin39

Try to add --noudevsync

Example : 
lvremove -v --noudevsync <path to volume>