Bonjour,
Depuis l'installation sur une clef USB 3.0 de Xubuntu 18.04 LTS avec LiLiUSB Creator sous W$ (... qui marche même avec la 18.04! 🙂 ), j'ai constaté une progressive dégradation du temps de chargement du système, en particulier après l'écran de Bienvenu (Installation / Démarrer) avec le choix des langues.
Par contre une fois le système chargé et à l'utilisation, je ne constate aucune dégradation des performances.
Je n'ai installé en plus des logiciels pré-chargés que The Gimp.
Faut-il passer de temps en temps un fsck ou un defrag sur une clé live ?
Quelques infos sur mon système :
lsusb ; echo ; lsusb -t
Bus 002 Device 004: ID 0bdb:1911 Ericsson Business Mobile Networks BV
Bus 002 Device 007: ID 13ba:0001 PCPlay Konig Electronic CMP-KEYPAD12 Numeric Keypad
Bus 002 Device 006: ID 04b3:3107 IBM Corp. ThinkPad 800dpi Optical Travel Mouse
Bus 002 Device 005: ID 058f:6366 Alcor Micro Corp. Multi Flash Reader
Bus 002 Device 003: ID 058f:6254 Alcor Micro Corp. USB Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 6557:0331
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 04f2:b221 Chicony Electronics Co., Ltd integrated camera
Bus 001 Device 003: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
|__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
|__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 480M
|__ Port 3: Dev 6, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 7, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 4, If 7, Class=CDC Data, Driver=cdc_ncm, 480M
|__ Port 4: Dev 4, If 5, Class=Communications, Driver=cdc_wdm, 480M
|__ Port 4: Dev 4, If 3, Class=Communications, Driver=cdc_acm, 480M
|__ Port 4: Dev 4, If 1, Class=Communications, Driver=cdc_acm, 480M
|__ Port 4: Dev 4, If 8, Class=Communications, Driver=cdc_wdm, 480M
|__ Port 4: Dev 4, If 6, Class=Communications, Driver=cdc_ncm, 480M
|__ Port 4: Dev 4, If 10, Class=CDC Data, Driver=cdc_acm, 480M
|__ Port 4: Dev 4, If 4, Class=CDC Data, Driver=cdc_acm, 480M
|__ Port 4: Dev 4, If 2, Class=CDC Data, Driver=cdc_acm, 480M
|__ Port 4: Dev 4, If 0, Class=Communications, Driver=, 480M
|__ Port 4: Dev 4, If 9, Class=Communications, Driver=cdc_acm, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
|__ Port 4: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M
|__ Port 4: Dev 3, If 2, Class=Vendor Specific Class, Driver=, 12M
|__ Port 4: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 4: Dev 3, If 3, Class=Application Specific Interface, Driver=, 12M
|__ Port 6: Dev 4, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 6: Dev 4, If 1, Class=Video, Driver=uvcvideo, 480M
uname -a
Linux xubuntu 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:37:27 UTC 2018 i686 i686 i686 GNU/Linux
free -m
total utilisé libre partagé tamp/cache disponible
Mem: 7977 693 5182 105 2101 6733
Partition d'échange: 0 0 0
df -h
Sys. de fichiers Taille Utilisé Dispo Uti% Monté sur
udev 3,9G 0 3,9G 0% /dev
tmpfs 798M 1,5M 797M 1% /run
/dev/sdb1 7,4G 5,6G 1,8G 76% /cdrom
/dev/loop1 1,3G 1,3G 0 100% /rofs
/cow 3,9G 2,0G 1,8G 54% /
tmpfs 3,9G 38M 3,9G 1% /dev/shm
tmpfs 5,0M 8,0K 5,0M 1% /run/lock
tmpfs 3,9G 0 3,9G 0% /sys/fs/cgroup
tmpfs 3,9G 12K 3,9G 1% /tmp
tmpfs 798M 12K 798M 1% /run/user/999
sudo systemd-analyze
Startup finished in 20.698s (kernel) + 3min 39.753s (userspace) = 4min 451ms
graphical.target reached after 3min 39.729s in userspace
