Merge pull request 'gerrit01: those who finetune even further' (#20) from gerrit-finetuning into main

Reviewed-on: delroth/bagel-infra#20
This commit is contained in:
raito 2024-07-05 12:37:43 +00:00
commit fa1bc1ced9
3 changed files with 59 additions and 9 deletions

View file

@ -17,6 +17,7 @@ in
pv
kitty.terminfo
config.boot.kernelPackages.perf
bcc
tcpdump
ncdu
] ++ lib.optional (lib.hasAttr "pwru" pkgs) pkgs.pwru;

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@ -28,6 +28,8 @@ in
config = mkIf cfg.enable {
networking.firewall.allowedTCPPorts = [ 29418 ];
environment.systemPackages = [ pkgs.openjdk17_headless ];
fileSystems."/var/lib/gerrit" = mkIf (cfg.data != "/var/lib/gerrit") {
device = cfg.data;
options = [ "bind" ];
@ -70,18 +72,49 @@ in
jvmPackage = pkgs.openjdk17_headless;
settings = {
# Performance settings
sshd.threads = 64;
sshd.batchThreads = 8;
gc.aggressive = true;
gc.interval = "1 day";
database.poolLimit = "250";
database.poolLimit = 250;
database.poolMaxIdle = 16;
http.maxThreads = 100;
core.packedGitLimit = "4g";
core.packedGitWindowSize = "16k";
core.packedGitOpenFiles = "4096";
httpd.maxThreads = 100;
receive.timeout = "4min";
transfer.timeout = "4min";
pack.threads = "8";
# Default is 0, infinite.
transfer.timeout = "30min";
# We may overshoot but it's OK.
core.packedGitWindowSize = "256k";
# Sum of all current packfiles is ~1.2G
# Largest packfile is 906MB.
# Average packfile is ~5-10MB.
core.packedGitLimit = "1g";
# We have plenty of memory, let's avoid file system cache → Gerrit needless copies.
core.packedGitUseStrongRefs = true;
core.packedGitOpenFiles = 4096;
# Big files in nixpkgs are usually lockfiles or machine-generated expressions
# containing a lot of hashes, they would weigh at most ~15MB.
core.streamFileThreshold = "20m";
# `mmap()` rather than `mmap()+read()` at the risk of running out of virtual address space.
core.packedGitMmap = true;
## Takes more CPU but the transfer is smaller.
pack.deltacompression = false;
pack.threads = 8;
# FIXME(raito):
# Are we supposed to have private / hidden references?
# For a public server, that seems unlikely.
# But, we should be careful with this option.
# https://gerrit-documentation.storage.googleapis.com/Documentation/3.9.5/config-gerrit.html#receive.checkReferencedObjectsAreReachable
receive.checkReferencedObjectsAreReachable = false;
# Other settings
log.jsonLogging = true;
log.textLogging = false;
sshd.advertisedAddress = "cl.forkos.org:29418";
@ -90,11 +123,18 @@ in
change.enableAttentionSet = true;
change.enableAssignee = false;
user = {
name = "ForkOS Gerrit";
email = "gerrit@forkos.org";
anonymousCoward = "ForkOS contributor";
};
# Configures gerrit for being reverse-proxied by nginx as per
# https://gerrit-review.googlesource.com/Documentation/config-reverseproxy.html
gerrit = {
canonicalWebUrl = "https://cl.forkos.org";
docUrl = "/Documentation";
defaultBranch = "refs/heads/main";
};
httpd.listenUrl = "proxy-https://${cfgGerrit.listenAddress}";

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@ -12,21 +12,30 @@ in
add_header Permissions-Policy "interest-cohort=()";
'';
recommendedProxySettings = false;
commonHttpConfig = ''
log_format upstream_time '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent"'
'rt=$request_time uct="$upstream_connect_time" uht="$upstream_header_time" urt="$upstream_response_time"';
'';
};
services.nginx.virtualHosts.gerrit = {
serverName = builtins.head cfg.domains;
serverAliases = builtins.tail cfg.domains;
enableACME = true;
forceSSL = true;
extraConfig = ''
access_log /var/log/nginx/gerrit-access.log upstream_time;
location / {
proxy_pass http://localhost:4778;
proxy_set_header X-Forwarded-For $remote_addr;
# The :443 suffix is a workaround for https://b.tvl.fyi/issues/88.
proxy_set_header Host $host:443;
# Gerrit can throw a lot of data.
proxy_buffering off;
proxy_buffering on;
# NGINX should not give up super fast. Things can take time.
proxy_read_timeout 3600;
}
location = /robots.txt {