This is a list of open issues that need to be resolved for FreeBSD
5.2. If you have any updates for this list, please e-mail
re@FreeBSD.org.
| Issue | Status | Responsible | Description |
|---|
| KAME Synchronization |
In progress |
Hajimu UMEMOTO |
The FreeBSD KAME IPv6 code is now substantially dated with
respect to the KAME vendor source. The FreeBSD Project needs
to take initiative in driving the merge of new bug fixes,
features, et al. |
| Light-weight interrupt threads, context switches |
Not done |
-- |
Currently, there are two classes of interrupt handlers in 5.x:
fast interrupt handlers which run entirely in interrupt context,
and heavy-weight handlers which execute in a full-weight kernel
interrupt thread. It is possible to optimize interrupt thread
context management such that a light-weight context switch is
performed to begin execution of the interrupt thread in the
handler context, and only when a full-weight context is required
(such as sleeping on a lock) is that cost required. This
optimization should substantially improve interrupt latency.
There are also additional kernel thread context switch optimizations
that can be made to improve the performance of thread workers in
the kernel, such as found in the network stack, crypto worker
threads, and GEOM. Bosko Milekic has done substantial prototyping
work, and should be coordinated with. |
| Run-time autoconfiguration of GBDE and related transforms |
Not done |
-- |
Currently, gbde must be manually configured at run-time each
time an encrypted disk device is mounted. This prevents easy
integration into /etc/fstab and easy automated deployment.
Improved integration with the configuration, mounting, and boot
process is required to make this feature more easily accessible. |
| gdb -k support for alpha |
Not done |
Mark Peek |
gdb -k doesn't work on alpha |
| Issue | Status | Responsible | Description |
|---|
| PCM locking and performance issues |
Needs testing |
-- |
The PCM audio framework and device drivers have been locked and
free of Giant for quite a while, but LOR problems persist along with
reports of poor audio performance under load. These problems are
believed to have been corrected, but more testing is desired. |
| ATA driver structural improvements, MPsafety |
Needs testing |
Søren Schmidt |
New ATA model has arrived, supporting fine-grained locking,
and more. Much testing is needed to ensure no regressions. |
| GPT support for sysinstall |
Needs testing |
Marcel Moolenaar |
Sysinstall and libdisk has been overhauled to support the GPT
partition scheme used on ia64. |
| Complete the APIC PCI interrupt routing support |
Needs testing |
John Baldwin |
Interrupt routing on ia32 has been completely re-written to support
ACPI hints for PCI interrupt routing, along with ACPI hints for CPU
enumeration. There have been reports of interrupt storms or a
failure for interrupts to deliver, possibly a result of bad ACPI
information. These problems need to be tracked down and resolved. |
| ATAng crashdump causes disk corruption |
Needs testing |
Søren Schmidt, Tor Egge |
Performing a crashdump on an ATA device can result in a corrupted
MBR record. Tor has a possible patch for this. |
| SMP users report acpi_cpu panic during shutdown |
Needs testing |
Nate Lawson |
The ACPI code registers eventhandlers that are not unregistered
when ACPI shuts down during system shutdown. The result can
be a panic during shutdown. Nate is circulating a patch that
is believed to correct this problem. |
| random_harvest panic |
Needs testing |
Mark Murray |
There are reports of witness panics in random_harvest_internal()
due to last minute changes in interrupt entropy harvesting code.
Systems running with INVARIANTS will rapidly panic. Update:
a workaround has been committed, but the original change must
either be backed out or revised before we can cut the first
beta. |
| Vinum data corruption and memory allocation problems |
Needs testing |
Greg Lehey |
In the last week, reports of two new (and possibly related)
Vinum failures have come to light: a warning message of
vinum: exiting with malloc table inconsistency at
0xc2053c00 from vinumio.c:755 has been experienced when
Vinum auto-configuration fails. Also, even simple test cases
for Vinum I/O appear to result in incorrect data being returned
from disk, rendering Vinum unusable in several reproduceable
configurations. |
| ACPI kernel module |
Needs testing |
John Baldwin |
The new i386 inpterrupt code should work whether the acpi driver is
compiled into the kernel or loaded as a module. The loader should
automatically load the module if it's not already compiled in. |
| Reported NFS failures |
Unknown |
|
There have been a number of reports of NFS clients and server
hangs. Unfortunately, these are difficult to reproduce, and
have not yet been traced back to a particular change or
reliable reproduction scenario. |
| Turnstile assertion failure |
Unknown |
John Baldwin |
panic: Assertion td->td_turnstile != NULL failed
at ../../../kern/subr_turnstile.c:427 has been affecting
several users on multiple platforms. This has hopefully been fixed
now, but more testinig is needed. |
| fsync panic while installing with softupdates enabled |
Needs testing |
Doug White, Jeff Roberson |
There is a repeatable panic happening for many people while
installing 5.2-RC1 when softupdates are enabled on the root
partition. This was being triggered by sysinstall doing a
forced unmount of devfs while node where still active. VFS has
been fixed to deal with this better, and sysinstall has bee
fixed to not do the forced unmount. |