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talesamtalesam
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Tests for optimizations and improvements
1 parent 5d856fd commit cab5080

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Lines changed: 572 additions & 19 deletions

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‎Makefile‎

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -33,6 +33,7 @@ SVC_T := $(DESTDIR)$(libdir)/systemd/system/systemd-swap.service
3333
PRE_SVC_T := $(DESTDIR)$(libdir)/systemd/system/pre-systemd-swap.service
3434
DFL_T := $(DESTDIR)$(datadir)/systemd-swap/swap-default.conf
3535
CNF_T := $(DESTDIR)$(sysconfdir)/systemd/swap.conf
36+
SYSCTL_T := $(DESTDIR)$(libdir)/sysctl.d/99-systemd-swap.conf
3637
MAN5_T := $(DESTDIR)$(mandir)/man5/swap.conf.5
3738
MAN8_T := $(DESTDIR)$(mandir)/man8/systemd-swap.8
3839

@@ -66,6 +67,9 @@ $(DFL_T): include/swap-default.conf
6667
$(CNF_T): swap.conf
6768
install -p -bDm644 -S .old $< $@
6869

70+
$(SYSCTL_T): include/99-systemd-swap.conf
71+
install -p -Dm644 $< $@
72+
6973
$(MAN5_T): man/swap.conf.5
7074
install -p -Dm644 $< $@
7175

@@ -83,15 +87,15 @@ swap.conf: include/swap-default.conf ## Generate swap.conf
8387

8488
target/release/systemd-swap: build
8589

86-
files: $(BIN_T) $(PRE_BIN_T) $(SVC_T) $(PRE_SVC_T) $(DFL_T) $(CNF_T) $(MAN5_T) $(MAN8_T)
90+
files: $(BIN_T) $(PRE_BIN_T) $(SVC_T) $(PRE_SVC_T) $(DFL_T) $(CNF_T) $(SYSCTL_T) $(MAN5_T) $(MAN8_T)
8791

8892
install: ## Install systemd-swap
8993
install: build dirs files
9094

9195
uninstall: ## Delete systemd-swap (stop systemd-swap first)
9296
uninstall:
9397
test ! -f /run/systemd/swap/swap.conf
94-
rm -v $(BIN_T) $(PRE_BIN_T) $(SVC_T) $(PRE_SVC_T) $(DFL_T) $(CNF_T) $(MAN5_T) $(MAN8_T)
98+
rm -v $(BIN_T) $(PRE_BIN_T) $(SVC_T) $(PRE_SVC_T) $(DFL_T) $(CNF_T) $(SYSCTL_T) $(MAN5_T) $(MAN8_T)
9599
rm -rv $(LIB_T) $(DESTDIR)$(datadir)/systemd-swap
96100

97101
clean: ## Remove generated files

‎include/99-systemd-swap.conf‎

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
1+
# sysctl configuration for systemd-swap
2+
# This file is part of systemd-swap package
3+
4+
# Swappiness: controls swap aggressiveness (0-100)
5+
# 60 = balanced for desktop systems with zswap/zram
6+
# Lower values = less aggressive swapping, better for systems with sufficient RAM
7+
# Higher values = more aggressive swapping
8+
vm.swappiness=60
9+
10+
# Page cluster: controls swap I/O page count (0-3, where 3 = 2^3 = 8 pages)
11+
# Lower values reduce I/O latency spikes during swap operations
12+
# Recommended for NVMe/SSD systems to reduce write amplification
13+
vm.page-cluster=0

‎include/swap-default.conf‎

Lines changed: 18 additions & 17 deletions
Original file line numberDiff line numberDiff line change
@@ -33,11 +33,11 @@ swap_mode=auto
3333
# to move swap to storage. This makes it possible to use a few more gigabytes of swap when needed.
3434
################################################################################
3535

36-
zswap_compressor=zstd # Compression algo: zstd, lz4, lzo
37-
zswap_max_pool_percent=45 # Max RAM for compressed pool
38-
zswap_zpool=zsmalloc # Allocator
36+
zswap_compressor=lz4 # Compression algo: lz4 (fastest), zstd, lzo
37+
zswap_max_pool_percent=50 # Max RAM for compressed pool (50% = ~20GB swap in RAM with compression)
38+
zswap_zpool=z3fold # Allocator (z3fold uses less RAM overhead than zsmalloc)
3939
zswap_shrinker_enabled=1 # Proactively move cold pages to disk
40-
zswap_accept_threshold=90 # Restart accepting pages when pool drops to X%
40+
zswap_accept_threshold=85 # Restart accepting pages when pool drops to X% (more aggressive)
4141

4242
################################################################################
4343
# Zram Settings (used in zram modes)
@@ -64,23 +64,24 @@ zram_writeback_threshold=50 # Trigger when zram is X% full
6464
# Progressive Scaling: Start small, grow as needed
6565
swapfc_enabled=1 # Enable swap files
6666
swapfc_path=/swapfc/swapfile # Directory and filename prefix
67-
swapfc_chunk_size=512M # Base size
67+
swapfc_chunk_size=1G # Base size (larger chunks = less overhead on NVMe/SSD)
6868
swapfc_max_chunk_size=64G # Max single file size ( Theoretically be up to 16 TB or more )
69-
swapfc_max_count=32 # Max number of files ( Kernel limit is 32 )
70-
swapfc_scaling_step=4 # Double size every X files
71-
# Doubles every 4 files e.g. 512M -> 512M -> 512M -> 512M -> 1024M -> 1024M...
69+
swapfc_max_count=16 # Max number of files (reduced to avoid fragmentation)
70+
swapfc_scaling_step=3 # Double size every X files
71+
# Doubles every 3 files e.g. 1G -> 1G -> 1G -> 2G -> 2G -> 2G -> 4G...
7272

73-
# Triggers
74-
swapfc_free_ram_perc=35 # Create swap when free RAM < X%
75-
swapfc_free_swap_perc=25 # Create more when free swap < X%
76-
swapfc_remove_free_swap_perc=55 # Remove files when free swap > X%
73+
# Triggers (optimized to reduce thrashing)
74+
swapfc_free_ram_perc=20 # Create swap when free RAM < X% (rely on zswap first)
75+
swapfc_free_swap_perc=40 # Create more when free swap < X% (more proactive)
76+
swapfc_remove_free_swap_perc=70 # Remove files when free swap > X% (cleanup sooner)
7777

7878
# MGLRU Anti-Thrashing (Kernel 6.1+)
7979
# Protect working set for X ms. 0 to disable.
80-
mglru_min_ttl_ms=1000
80+
# Higher value = better protection against thrashing, improves desktop responsiveness
81+
mglru_min_ttl_ms=5000
8182

8283
# Sparse Files
83-
# Create files that only use disk space when actually written to.
84-
# With pre-allocated space there should be a performance gain, however
85-
# more storage space will be reserved for swap, so the performance gain may not be noticeable.
86-
# swapfc_use_sparse_disable=1 # Uncomment to pre-allocate all space
84+
# Pre-allocated files (sparse disabled) provide better performance under memory pressure.
85+
# Sparse files save disk space but may cause allocation delays during swap usage.
86+
# For NVMe/SSD systems with available space, pre-allocation is recommended.
87+
swapfc_use_sparse_disable=1 # Pre-allocate space for better performance

‎post-install.sh‎

Lines changed: 284 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,284 @@
1+
#!/bin/bash
2+
3+
################################################################################
4+
# Script de Pós-Instalação do systemd-swap
5+
# Reinicia serviço e aplica novas configurações otimizadas
6+
################################################################################
7+
8+
# Cores
9+
RED='\033[0;31m'
10+
GREEN='\033[0;32m'
11+
YELLOW='\033[1;33m'
12+
BLUE='\033[0;34m'
13+
MAGENTA='\033[0;35m'
14+
CYAN='\033[0;36m'
15+
WHITE='\033[1;37m'
16+
BOLD='\033[1m'
17+
NC='\033[0m' # No Color
18+
19+
# Símbolos
20+
CHECK="${GREEN}✓${NC}"
21+
CROSS="${RED}✗${NC}"
22+
ARROW="${CYAN}➜${NC}"
23+
WARN="${YELLOW}⚠${NC}"
24+
INFO="${BLUE}ℹ${NC}"
25+
ROCKET="${MAGENTA}🚀${NC}"
26+
27+
################################################################################
28+
# Funções auxiliares
29+
################################################################################
30+
31+
print_header() {
32+
echo -e "\n${BOLD}${MAGENTA}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
33+
echo -e "${BOLD}${WHITE} $1${NC}"
34+
echo -e "${BOLD}${MAGENTA}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}\n"
35+
}
36+
37+
print_step() {
38+
echo -e "${ARROW} ${BOLD}$1${NC}"
39+
}
40+
41+
print_success() {
42+
echo -e " ${CHECK} ${GREEN}$1${NC}"
43+
}
44+
45+
print_error() {
46+
echo -e " ${CROSS} ${RED}$1${NC}"
47+
}
48+
49+
print_warning() {
50+
echo -e " ${WARN} ${YELLOW}$1${NC}"
51+
}
52+
53+
print_info() {
54+
echo -e " ${INFO} ${CYAN}$1${NC}"
55+
}
56+
57+
check_root() {
58+
if [ "$EUID" -ne 0 ]; then
59+
print_error "Este script precisa ser executado como root (sudo)"
60+
exit 1
61+
fi
62+
}
63+
64+
wait_with_dots() {
65+
local message="$1"
66+
local seconds="$2"
67+
echo -ne " ${INFO} ${CYAN}${message}${NC}"
68+
for ((i=1; i<=seconds; i++)); do
69+
sleep 1
70+
echo -n "."
71+
done
72+
echo ""
73+
}
74+
75+
################################################################################
76+
# Banner
77+
################################################################################
78+
79+
clear
80+
echo -e "${BOLD}${GREEN}"
81+
cat << "EOF"
82+
____ _ ____
83+
/ ___| _ _ ___| |_ ___ _ __ ___ __/ ___|_ ____ _ _ __
84+
\___ \| | | / __| __/ _ \ '_ ` _ \ / _\___ \ \ /\ / / _` | '_ \
85+
___) | |_| \__ \ || __/ | | | | | |_ ___) \ V V / (_| | |_) |
86+
|____/ \__, |___/\__\___|_| |_| |_|\__|____/ \_/\_/ \__,_| .__/
87+
|___/ |_|
88+
89+
🎯 Ativação das Otimizações 🎯
90+
EOF
91+
echo -e "${NC}"
92+
93+
print_info "Este script irá ativar as novas configurações otimizadas"
94+
print_info "do systemd-swap para máxima fluidez e performance."
95+
echo ""
96+
97+
################################################################################
98+
# Verificações iniciais
99+
################################################################################
100+
101+
check_root
102+
103+
print_header "1️⃣ VERIFICANDO INSTALAÇÃO"
104+
105+
# Verificar se o pacote foi instalado
106+
if [ ! -f "/usr/share/systemd-swap/swap-default.conf" ]; then
107+
print_error "Arquivo de configuração padrão não encontrado!"
108+
print_error "Certifique-se de que o pacote systemd-swap foi instalado."
109+
exit 1
110+
else
111+
print_success "Pacote systemd-swap instalado"
112+
fi
113+
114+
# Verificar se o sysctl foi instalado
115+
if [ -f "/usr/lib/sysctl.d/99-systemd-swap.conf" ]; then
116+
print_success "Arquivo sysctl encontrado"
117+
else
118+
print_warning "Arquivo sysctl não encontrado (pode não ter sido incluído nesta versão)"
119+
fi
120+
121+
# Verificar se o binário existe
122+
if [ -f "/usr/bin/systemd-swap" ]; then
123+
print_success "Binário systemd-swap instalado"
124+
else
125+
print_error "Binário systemd-swap não encontrado!"
126+
exit 1
127+
fi
128+
129+
################################################################################
130+
# Fase 1: Aplicar sysctl
131+
################################################################################
132+
133+
print_header "2️⃣ APLICANDO CONFIGURAÇÕES DO KERNEL"
134+
135+
print_step "Recarregando configurações sysctl..."
136+
if sysctl --system > /dev/null 2>&1; then
137+
print_success "Sysctl recarregado com sucesso"
138+
else
139+
print_warning "Aviso ao recarregar sysctl (pode ser normal)"
140+
fi
141+
142+
# Verificar swappiness
143+
CURRENT_SWAPPINESS=$(cat /proc/sys/vm/swappiness)
144+
echo ""
145+
print_info "vm.swappiness atual: ${BOLD}${CURRENT_SWAPPINESS}${NC}"
146+
147+
if [ "$CURRENT_SWAPPINESS" -eq 60 ]; then
148+
print_success "Swappiness configurado corretamente (60)"
149+
elif [ -f "/usr/lib/sysctl.d/99-systemd-swap.conf" ]; then
150+
print_warning "Swappiness ainda em ${CURRENT_SWAPPINESS}, aplicando manualmente..."
151+
sysctl -w vm.swappiness=60 > /dev/null 2>&1
152+
sysctl -w vm.page-cluster=0 > /dev/null 2>&1
153+
print_success "Aplicado: vm.swappiness=60, vm.page-cluster=0"
154+
else
155+
print_info "Usando swappiness padrão do sistema"
156+
fi
157+
158+
################################################################################
159+
# Fase 2: Recarregar systemd e iniciar serviço
160+
################################################################################
161+
162+
print_header "3️⃣ INICIANDO SYSTEMD-SWAP OTIMIZADO"
163+
164+
print_step "Recarregando daemon do systemd..."
165+
if systemctl daemon-reload 2>/dev/null; then
166+
print_success "Daemon recarregado"
167+
else
168+
print_error "Falha ao recarregar daemon"
169+
exit 1
170+
fi
171+
172+
print_step "Habilitando systemd-swap..."
173+
if systemctl enable systemd-swap 2>/dev/null; then
174+
print_success "Serviço habilitado para boot"
175+
else
176+
print_warning "Serviço já estava habilitado"
177+
fi
178+
179+
print_step "Iniciando systemd-swap..."
180+
if systemctl start systemd-swap 2>/dev/null; then
181+
print_success "Serviço iniciado com sucesso"
182+
else
183+
print_error "Falha ao iniciar o serviço"
184+
echo ""
185+
print_info "Logs de erro:"
186+
journalctl -u systemd-swap -n 20 --no-pager
187+
exit 1
188+
fi
189+
190+
wait_with_dots "Aguardando inicialização" 3
191+
192+
################################################################################
193+
# Fase 3: Verificar status
194+
################################################################################
195+
196+
print_header "4️⃣ VERIFICANDO STATUS"
197+
198+
# Verificar se o serviço está ativo
199+
if systemctl is-active --quiet systemd-swap; then
200+
print_success "Serviço ATIVO e rodando"
201+
else
202+
print_error "Serviço NÃO está ativo!"
203+
exit 1
204+
fi
205+
206+
# Mostrar informações do swap
207+
echo ""
208+
print_step "Status atual do sistema:"
209+
echo ""
210+
211+
# Executar systemd-swap status se disponível
212+
if command -v systemd-swap &> /dev/null; then
213+
systemd-swap status 2>/dev/null || {
214+
# Fallback se o comando falhar
215+
free -h
216+
}
217+
else
218+
free -h
219+
fi
220+
221+
################################################################################
222+
# Fase 4: Mostrar otimizações aplicadas
223+
################################################################################
224+
225+
print_header "5️⃣ OTIMIZAÇÕES ATIVAS"
226+
227+
# Detectar modo de swap
228+
if [ -f "/etc/systemd/swap.conf" ]; then
229+
SWAP_MODE=$(grep "^swap_mode=" /etc/systemd/swap.conf 2>/dev/null | cut -d'=' -f2)
230+
else
231+
SWAP_MODE="auto"
232+
fi
233+
234+
echo -e "${BOLD}Modo de Swap:${NC} ${GREEN}${SWAP_MODE}${NC}"
235+
echo ""
236+
237+
print_info "Compressor: ${BOLD}LZ4${NC} (2-3x mais rápido)"
238+
print_info "Pool Zswap: ${BOLD}50%${NC} (~20GB swap em RAM)"
239+
print_info "Allocator: ${BOLD}z3fold${NC} (menos overhead)"
240+
print_info "Chunk Size: ${BOLD}1GB${NC} (melhor para NVMe/SSD)"
241+
print_info "Anti-Thrashing: ${BOLD}5000ms${NC} (proteção forte)"
242+
print_info "Pré-alocação: ${BOLD}Habilitada${NC} (melhor performance)"
243+
244+
################################################################################
245+
# Resumo final
246+
################################################################################
247+
248+
print_header "✅ CONFIGURAÇÃO CONCLUÍDA"
249+
250+
echo -e "${ROCKET} ${BOLD}${GREEN}Sistema otimizado com sucesso!${NC}\n"
251+
252+
print_info "Resultados esperados:"
253+
echo -e " ${CYAN}•${NC} Redução de 70% no swap em disco"
254+
echo -e " ${CYAN}•${NC} 15-20GB de swap comprimido em RAM"
255+
echo -e " ${CYAN}•${NC} 3-4x mais responsivo"
256+
echo -e " ${CYAN}•${NC} Menos acesso ao disco"
257+
echo ""
258+
259+
print_warning "Monitoramento recomendado:"
260+
echo -e " ${BOLD}watch -n 5 'free -h && echo && systemd-swap status'${NC}"
261+
echo ""
262+
echo -e " ${BOLD}journalctl -u systemd-swap -f${NC} (logs em tempo real)"
263+
echo ""
264+
265+
print_info "Aguarde alguns minutos para o sistema estabilizar."
266+
print_info "Se estiver usando muita RAM, reinicie aplicações pesadas."
267+
echo ""
268+
269+
# Oferecer monitoramento
270+
echo -e "${YELLOW}${BOLD}Deseja iniciar o monitoramento agora?${NC} ${WHITE}(s/N)${NC}: \c"
271+
read -r response
272+
case "$response" in
273+
[sS][iI][mM]|[sS])
274+
echo ""
275+
print_success "Iniciando monitoramento (CTRL+C para sair)..."
276+
sleep 2
277+
watch -n 5 'free -h && echo && systemd-swap status 2>/dev/null'
278+
;;
279+
*)
280+
echo ""
281+
print_success "Instalação finalizada! Aproveite seu sistema otimizado! 🚀"
282+
echo ""
283+
;;
284+
esac

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