NetBSD è un sistema operativo Open SourceUnix-like, sicuro e altamente portabile disponibile per molte piattaforme, dai computer a 64 bit Opteron e sistemi desktop ai dispositivi palmari ed embedded. Le sue caratteristiche di design pulito ed avanzate lo rendono idoneo a produzione e ambienti di ricerca, ed è facile con codice sorgente completo. Molte applicazioni sono facilmente disponibili attraverso la raccolta NetBSD Packages. NetBSD è un sistema altamente integrato. Oltre alla sua altamente portabilità, kernel ad alte prestazioni, NetBSD offre un set completo di utilità dell’utente, compilatori per diverse lingue, il sistema X Window, software firewall e numerosi altri strumenti, il tutto accompagnato dal codice sorgente completo. La Collezione NetBSD Packages, pkgsrc, contiene oltre 5700 pacchetti. Versioni dei pacchetti binari per un certo numero di piattaforme sono attualmente in corso.

Il sistema operativo NetBSD è un full-optional, open source, sistema UNIX-like derivato dal rilascio Networking Berkeley 2 (Net / 2), 4.4BSD-Lite, e 4.4BSD-Lite2. NetBSD funziona su 57 diverse architetture di sistema con 17 architetture in 17 distinte famiglie di CPU.

NetBSD è distribuito in tre forme: comunicati ufficiali, NetBSD rilascio, NetBSD e correnti. Comunicati formali sono fatti periodicamente e sono ben collaudati, il codice sorgente, e strumenti di installazione. NetBSD-release è un’istantanea giornaliera aggiornata. NetBSD corrente è una distribuzione notturna delle fonti più recenti di sviluppo, pensato per le persone che vogliono l’ultimo software in assoluto.

Far raggiungere miglioramenti di rete, ma non solo prestazioni migliori, anche fare di NetBSD una scelta eccellente per un gateway VPN. PAM (Pluggable Authentication Modules) quadro aggiunge una maggiore flessibilità alla gestione degli utenti NetBSD e semplifica l’integrazione in reti eterogenee. Il kernel, librerie e di programmi in grado di gestire file system più grandi di due terabyte, e il supporto per Xen 2.0 permette di hosting molti server virtuali su una singola macchina.

Cambiamenti di rilievo di NetBSD 6


General kernel
time_t and dev_t are now 64 bits.
Much-improved compat_linux support for running Linux binaries.
Added a generic producer/consumer queue.
Added a new ptree ( Patricia / RADIX tree ) implementation.
Removed MALLOC() and FREE() macros.
Compute kern.ipc.shmmaxpages on startup based on physical memory. Can be overridden via sysctl(8).
kmem_alloc(9): Add more extensive runtime debugging facilities.
File descriptor access performance improvements were made.
cpu_reboot(9): tear down stacks of devices and file systems in an orderly fashion during shutdown.
Added ‘show vmem’ and ‘show all vmems’ commands to ddb(4).
Added high-priority xcall(9) support.
Added direct select()/poll() support.
Add PCU (Per-CPU Unit) interface to unify synchronization of per CPU context, like lazy FPU management.
Added new system calls pipe2(2), paccept(2), kqueue1(2), flags SOCK_CLOEXEC/SOCK_NONBLOCK to socket(2), socketpair(2), F_DUPFD_CLOEXEC to fcntl(2), and a MSG_CMSG_CLOEXEC to recvfrom(2) to be able to set close-on-exec to all newly created file descriptors.
Major improvements to uvm_map(9), uvm_km(9), vmem(9), and kmem(9) layers.
Removed ltsleep(9) and wakeup_one(9).
Rewrote most of the entropy-gathering and entropy-distributing code, separating the rnd(4) pseudodevice from the bitstream generation code cprng(9) and entropy-pool code rnd(9).
Kernel support for posix_spawn(3).
ip(4): added IP_RECVTTL option to let recvmsg(2) return the TTL of the received datagram.
ip(4): added IP_MINTTL option to discard packets with a TTL lower than the option value.
Added SOCK_SEQPACKET for local sockets.
Added net.inet.icmp.bmcastecho sysctl(7), to disable ICMP replies to the braodcast address.
Make TCP window size autoscaling the default.
Derive the mbuf cluster (NMBCLUSTERS) at boot time from the available memory. The default can be raised by changing kern.mbuf.nmbclusters.
Added NPF, the NetBSD Packet Filter.
udp(4): implement RFC6056 port selection algorithms.
File systems
Added CHFS, a file system for flash devices.
The default behavior when mounting empty msdosfs file systems has been changed to assume long filenames. The behavior with populated file systems has not changed.
UDF: Added support for session opening/closing on sequential media.
ext2fs: Added support for >128 byte inodes.
Import OpenSolaris ZFS code. Experimental-only; does not work yet.
ffs: New quota support. This adds a new on-disk format to store disk quota usage and limits, integrated with ffs metadata. Usage is checked by fsck_ffs(8) (no more quotacheck) and is covered by the WAPBL journal. Enabled with kernel option QUOTA2.
secmodel_bsd44(9), secmodel_securelevel(9): Add provisions to control access to gpio(4) pins.
security.conf(5): Add check_pkg_vulnerabilities and check_pkg_signatures to validate the installed packages against the vulnerabilities database and the expected checksums for their files.

Added gcscaudio(4) driver for AMD Geode CS5536.
Added hdaudio(4), a new standards-compliant Intel High Definition Audio driver written to replace azalia(4).
audio(9): Audio drivers are now MP-safe. This should fix skips under load sometimes seen in NetBSD 5.

Hardware Monitoring:
sysmon_envsys(9): Enhancements to allow access to driver-internal limit values.
acpicpu(4): Add a driver for ACPI-based processor functionality.
acpipmtr(4): Add a driver for ACPI power meters.
acpismbus(4): ACPI SMBus Control Method Interface driver.
acpiwdrt(4): ACPI Watchdog Resource Tables driver.
acpiwmi(4): Windows Management Instrumentation support for ACPI. Also added mappings for wmidell(4), wmieeepc(4), wmihp(4), and wmimsi(4).
aibs(4): New driver for ASUSTeK AI Booster (ACPI ASOC ATK0110) hardware monitor with limit support.
amdtemp(4): Add support for Family 12h.
dbcool(4): Added support for ADM1031 thermal sensor / fan controller.

Added support for more chip revisions to re(4). Added hardware checksum support for newer PCIe 8168C/8111C/8102E chips.
Switch ath(4) from the binary HAL to the open-source HAL from Sam Leffler.
Added bwi(4) driver for Broadcom AirForce / Apple Airport Extreme network cards.
Added flow control and RTL8211C(L) PHY support to rgephy(4).
Added age(4) and atphy(4) drivers for Attansic/Atheros L1 Gigabit Ethernet and F1 PHY, respectively.
Added support for flow control to sk(4).
Added TCPv4/UDPv4 RX hardware checksum support for i82559 and later chips to fxp(4).
wm(4): Added ICH10, PCH, PCH2, 82575, 82576, 82580 and I350 devices support. Added some other improvements and workarounds.
bge(4): added misc quirk code for chip specific bugs.
Added ale(4): Attansic/Atheros L1E Gigabit Ethernet.
agr(4): added support for layering vlans on top, and allow LACP to be disabled.
alc(4): Add a driver for Atheros AR813x/AR815x Ethernet.
aue(4): Add support for I-O DATA ETX-US2.
bnx(4): Added support for Broadcom BCM5709 and BCM5716 chips. Add support for Broadcom BCM5709S (SerDes) chip.
et(4), etphy(4): Add a driver for Agere/LSI ET1310/ET1301 10/100/Gigabit Ethernet device and the Agere/LSI ET1011 TruePHY Gigabit Ethernet PHY.
kue(4): fixed unaligned memory accesses so it now works on ARM and MIPS machines.
ne(4): add proper support for NE2000 8-bit mode.
nfe(4): Add support for flow control for MCP65.
otus(4): Atheros AR9100U driver.
smsh(4): Add a SMSC LAN9118 Family Ethernet driver.
upgt(4): Add a driver for Conexant/Intersil PrismGT SoftMAC USB IEEE 802.11b/g WLAN.

Added an experimental in-kernel iSCSI initiator, from Wasabi Systems.
viaide(4): Added VT8237S Integrated SATA controller support, and VT6410 PATA RAID controller support (without RAID).
Added LVM functionality with dm(4) driver and lvm2 userland tools.
Added support for 82965PM to piixide(4).
vnd(4): implemented DIOCCACHESYNC. Also, allow vnd(4) to be backed by a sparse file.
Added sdmmc(4) driver for SD/MMC.
mvsata(4): support the Marvell Hercules-I/II SATA controllers.
flash(9): Add a subsystem to handle flash memory devices, and nand(9), a subsystem to handle NAND controllers.
mfi(4): Add support for LSI’s newer (GEN2) RAID controller.
nside(4): Add a driver for the National Semiconductor PC87415 IDE controller.
RAIDFrame parity maps, which greatly improve parity rewrite times after unclean shutdown.
Added support for non 512-byte sector devices.
Added support for >2TB devices.

uftdi(4): Added support for REX-USB60F.
ehci(4): work around USB subsystem freeze for SB600/SB700 chipsets.
ums(4): Added touchpanel support.

Graphics and Video:
drm(4): updated to mesa-drm 85b9f737db0d2a845e4d7e2bbf9ad12ff9e2227c.
acpivga(4): ACPI Video Extensions driver.
agp(4): Added support for Intel G35, Intel G45, and Intel 82855GM.
auvitek(4): Add a driver for Auvitek AU0828 family USB video capture controllers.
dtv(4): Add new digital TV framework.
cxdtv(4): Add driver for Conexant CX23880-based DTV cards.
emdtv(4): Add a driver for Empia EM28xx family USB video capture controllers.
omapfb(4): a simple driver for OMAP 3xxx on-chip video, especially the Beagleboard.

Added Elantech multi-touch trackpad support to pms(4).
Added the altmem(4) “alternative memory” disk driver, which allows memory that is normally inaccessible by the machine-dependent pmap(9) to be used (as swap space).
ichlpcib(4): support 82801IEM LPC Interface Bridge.
Complete rework of gpio(4) to integrate with kauth(9), allow for runtime driver attachment, and naming of individual pins.
Added gpiosim(4) driver to simulate a gpio(4) device for testing purposes.
Added gpioiic(4) driver to bit-bang an I2C bus using GPIO pins.
btmagic(4): Apple Magic Mouse driver.
vmt(4): Add a VMware Tools driver, from OpenBSD.

Homepage – The NetBSD Project
Download QUI consigliato da PCtrio
NetBSD 6.0 Finale

UltraDefrag 5.0.6 (32-bit)

UltraDefrag è un potente strumento di deframmentazione del disco per Windows.E ‘il primo deframmentatore open source con il pieno appoggio del sistema di deframmentazione file bloccati. In realtà tutti i file compresi hive di registro e file di paging può essere elaborato da UltraDefrag durante il processo di avvio di Windows.

  • Deframmentazione Boot Time: Questa funzione consente una capacità di deframmentare i file di sistema. Compresi file di paging, hive del Registro, file hiberfil.sys e molti altri file bloccati dal sistema o da altre applicazioni di Windows è completamente in esecuzione.
  • Ottimizzazione Fast Disk: L’ottimizzatore riordina tutti i dati e li inserisce all’inizio del disco. In molti casi abbiamo scoperto, che il sistema è più stabile ed esegue molto meglio sotto carico, se i dati viene posizionato all’inizio del disco.
  • Singolo file e cartelle Deframmentazione: Dopo UltraDefrag è installato si avrà la possibilità di selezionare qualsiasi file o cartella e deframent esso.Questa opzione è particolarmente utile, se è stato recentemente installato un’applicazione o un gioco e vorrebbe avere la deframmentazione immediatamente per le massime prestazioni.

Questa è la versione a 32 bit.