This is an automated bi-weekly mailing of the FreeBSD 5.2 open issues list. The live version of this list is available at: http://www.FreeBSD.org/releases/5.2R/todo.html Automated mailing of this list will continue through the release of FreeBSD 5.2. FreeBSD 5.2 Open Issues Open Issues 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_at_FreeBSD.org. Show stopper defects for 5.2-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |-------------------+----------+-------------+---------------------------| | | | | There is a repeatable | | | | | panic happening for many | | fsync panic while | | | people while installing | | installing with | Not done | Doug White | 5.2-RC1 when softupdates | | softupdates | | | are enabled on the root | | enabled | | | partition. Contact Doug | | | | | White for more | | | | | information. | +------------------------------------------------------------------------+ Required features for 5.2-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |-----------------+-------------+-------------+--------------------------| | | | | Significant parts of the | | | | | network stack | | | | | (especially IPv4 and | | | | | IPv6) now have | | | | | fine-grained locking of | | | | | their data structures. | | | | | However, it is not yet | | | | | possible for the netisr | | | | | threads to run without | | Fine-grained | | | Giant, due to | | network stack | In progress | Sam Leffler | dependencies on sockets, | | locking without | | | routing, etc. A | | Giant | | | 5.2-RELEASE goal is to | | | | | have the network stack | | | | | running largely without | | | | | Giant, which should | | | | | substantially improve | | | | | performance of the | | | | | stack, as well as other | | | | | system components by | | | | | reducing contention on | | | | | Giant. | +------------------------------------------------------------------------+ Desired features for 5.2-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |---------------------+-------------+-------------+----------------------| | | | | The FreeBSD KAME | | | | | IPv6 code is now | | | | | substantially dated | | | | | with respect to the | | KAME | | Hajimu | KAME vendor source. | | Synchronization | In progress | UMEMOTO | The FreeBSD Project | | | | | needs to take | | | | | initiative in | | | | | driving the merge of | | | | | new bug fixes, | | | | | features, et al. | |---------------------+-------------+-------------+----------------------| | | | | 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, | | Light-weight | | | and only when a | | interrupt threads, | Not done | -- | full-weight context | | context switches | | | 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. | |---------------------+-------------+-------------+----------------------| | | | | Currently, gbde must | | | | | be manually | | | | | configured at | | | | | run-time each time | | | | | an encrypted disk | | | | | device is mounted. | | | | | This prevents easy | | Run-time | | | integration into | | autoconfiguration | Not done | -- | /etc/fstab and easy | | of GBDE and related | | | automated | | transforms | | | deployment. Improved | | | | | integration with the | | | | | configuration, | | | | | mounting, and boot | | | | | process is required | | | | | to make this feature | | | | | more easily | | | | | accessible. | |---------------------+-------------+-------------+----------------------| | gdb -k support for | Not done | Mark Peek | gdb -k doesn't work | | alpha | | | on alpha | +------------------------------------------------------------------------+ Documentation items desired for 5.2 +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |---------------+-------------+--------------+---------------------------| | | | | The Early Adopters Guide | | | | | needs to be revised, | | Revise EAG | Done | Bruce A. Mah | hopefully for the last | | | | | time, to reflect the | | | | | state of 5.2. | |---------------+-------------+--------------+---------------------------| | | | | Ongoing project to remove | | | | | redundancy in | | Trim Hardware | | | documentation by removing | | Notes | In progress | Bruce A. Mah | lists of specific devices | | | | | from the hardware notes | | | | | and pointing readers to | | | | | driver manpages. | +------------------------------------------------------------------------+ Testing focuses for 5.2-RELEASE +---------------------------------------------------------------------------+ | Issue | Status |Responsible| Description | |--------------+-------------+-----------+----------------------------------| | | | |The PCM audio framework and device| | | | |drivers have been locked and free | |PCM locking | | |of Giant for quite a while, but | |and |Needs testing|-- |LOR problems persist along with | |performance | | |reports of poor audio performance | |issues | | |under load. These problems are | | | | |believed to have been corrected, | | | | |but more testing is desired. | |--------------+-------------+-----------+----------------------------------| |ATA driver | | |New ATA model has arrived, | |structural |Needs testing|So/ren |supporting fine-grained locking, | |improvements, | |Schmidt |and more. Much testing is needed | |MPsafety | | |to ensure no regressions. | |--------------+-------------+-----------+----------------------------------| |GPT support | |Marcel |Sysinstall and libdisk has been | |for sysinstall|Needs testing|Moolenaar |overhauled to support the GPT | | | | |partition scheme used on ia64. | |--------------+-------------+-----------+----------------------------------| | | | |Interrupt routing on ia32 has been| | | | |completely re-written to support | |Complete the | | |ACPI hints for PCI interrupt | |APIC PCI | | |routing, along with ACPI hints for| |interrupt |Needs testing|John |CPU enumeration. There have been | |routing | |Baldwin |reports of interrupt storms or a | |support | | |failure for interrupts to deliver,| | | | |possibly a result of bad ACPI | | | | |information. These problems need | | | | |to be tracked down and resolved. | |--------------+-------------+-----------+----------------------------------| |ATAng | |So/ren |Performing a crashdump on an ATA | |crashdump |Needs testing|Schmidt, |device can result in a corrupted | |causes disk | |Tor Egge |MBR record. Tor has a possible | |corruption | | |patch for this. | |--------------+-------------+-----------+----------------------------------| | | | |The ACPI code registers | |SMP users | | |eventhandlers that are not | |report | | |unregistered when ACPI shuts down | |acpi_cpu panic|Needs testing|Nate Lawson|during system shutdown. The result| |during | | |can be a panic during shutdown. | |shutdown | | |Nate is circulating a patch that | | | | |is believed to correct this | | | | |problem. | |--------------+-------------+-----------+----------------------------------| | | | |There are reports of witness | | | | |panics in | | | | |random_harvest_internal() due to | | | | |last minute changes in interrupt | |random_harvest| | |entropy harvesting code. Systems | |panic |Needs testing|Mark Murray|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. | |--------------+-------------+-----------+----------------------------------| | | | |In the last week, reports of two | | | | |new (and possibly related) Vinum | | | | |failures have come to light: a | | | | |warning message of vinum: exiting | |Vinum data | | |with malloc table inconsistency at| |corruption and| | |0xc2053c00 from vinumio.c:755 has | |memory |Needs testing|Greg Lehey |been experienced when Vinum | |allocation | | |auto-configuration fails. Also, | |problems | | |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. | |--------------+-------------+-----------+----------------------------------| | | | |The new i386 inpterrupt code | | | | |should work whether the acpi | |ACPI kernel | |John |driver is compiled into the kernel| |module |Needs testing|Baldwin |or loaded as a module. The loader | | | | |should automatically load the | | | | |module if it's not already | | | | |compiled in. | |--------------+-------------+-----------+----------------------------------| | | | |There have been a number of | | | | |reports of NFS clients and server | |Reported NFS | | |hangs. Unfortunately, these are | |failures |Unknown | |difficult to reproduce, and have | | | | |not yet been traced back to a | | | | |particular change or reliable | | | | |reproduction scenario. | |--------------+-------------+-----------+----------------------------------| | | | |panic: Assertion td->td_turnstile | | | | |!= NULL failed at | |Turnstile | |John |../../../kern/subr_turnstile.c:427| |assertion |Unknown |Baldwin |has been affecting several users | |failure | | |on multiple platforms. This has | | | | |hopefully been fixed now, but more| | | | |testinig is needed. | +---------------------------------------------------------------------------+ ---------------------------------------------------------------------- home | contact | legal | (c) 1995-2003 The FreeBSD Project. All rights reserved. Last modified: 2003/12/12 16:10:20Received on Mon Dec 15 2003 - 06:01:36 UTC
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