__group__ ticket summary component version type owner status created _changetime _description _reporter 32 Superpages are not used as often as desired kernel defect john started 2013-06-07T15:20:45-04:00 2013-08-16T17:15:51-04:00 "At work we've found that there are some use cases where superpages are not used as often as we'd like. Specifically, if we create several shared memory objects (via shm_open()) that are not exact multiples of a superpage and map them, they are assigned virtually contiguous addresses, meaning that they do not each start on a superpage boundary. This seems to be related to the fact that we only specify VMFS_ALIGNED_SPACE for device VM objects. Secondly, if we pre-zero a file before mapping it, the file uses random pages from all over the place. This may be harder to fix though alc@ may have a suggestion that might help." john 3 Handle resource leaks from driver detach routines kernel defect john assigned 2013-05-15T17:46:14-04:00 2013-06-27T17:13:43-04:00 Release active resources when a device is detached. john 5 Using %cr8/TPR for spinlock_enter/exit kernel defect john started 2013-05-15T18:04:00-04:00 2013-05-15T18:37:41-04:00 I have a branch of this implemented. The trick so far is finding a workload where it helps. john 13 Fix concurrent RX processing in ixgbe(4) kernel defect john started 2013-05-15T22:35:38-04:00 2013-08-14T08:01:57-04:00 "There are at least two patches: - Removing 'rearm_queues' - Reworking watchdog handling (possibly needed in igb as well)" john 16 Better fix for UDP sends slow kernel defect john assigned 2013-05-15T22:56:10-04:00 2013-05-18T13:58:54-04:00 Figuring out the best way to close the race when you don't get the trylock when using drbr in an if_transmit routine. john 21 Make WITHOUT_GNU work userland defect john assigned 2013-05-15T23:00:42-04:00 2013-05-18T13:59:44-04:00 The WITHOUT_GNU src.conf option is currently a nop. It should function as an installworld target that doesn't install any GNU binaries (e.g. src/gnu). john 30 hw.pci.realloc_bars is not quite right kernel defect john new 2013-05-30T11:12:44-04:00 2013-05-30T11:13:27-04:00 We should probably let a PCI bus allocate as many resources as possible using the firmware-assigned ranges and only fall back to reallocating BARs that failed in a second pass. john 33 Fix stdio to use int for fds instead of a short userland defect john started 2013-06-19T11:47:40-04:00 2015-10-22T17:50:36-04:00 Right now stdio uses a short for file descriptors instead of an int. This means it can't handle FD's above 65535. john 55 Non-ISA PCI-PCI bridge behind a ISA PCI-PCI bridge can't allocate I/O window kernel defect new 2014-03-26T12:07:41-04:00 2014-03-26T14:06:32-04:00 Will bad hardware never cease? john 64 Test rman_reserve_resource() with count of 0 boot defect new 2014-10-02T14:38:38-04:00 2014-10-02T14:39:09-04:00 Reserving a count of zero should fail. Make sure it fails. john 97 Convert ticks to unsigned kernel defect new 2015-03-05T07:13:46-05:00 2015-03-05T07:13:46-05:00 john 1 multipass new-bus probe & attach kernel enhancement john started 2013-05-15T17:26:04-04:00 2014-01-21T12:14:59-05:00 Continuing the multipass probe & attach work to the point that we can start the full scheduler with timers before most devices are probed and attached. john 4 Reworking interrupt threads kernel enhancement john started 2013-05-15T17:56:46-04:00 2013-05-15T18:38:22-04:00 Tearing interrupt threads apart separating the queue of active handlers from the threads and allowing handlers to requeue themselves. Also enables filters unconditionally. john 6 posix_fadvise() FADV_WILLNEED kernel enhancement john started 2013-05-15T18:09:45-04:00 2013-05-15T18:38:38-04:00 Adding some support for POSIX_FADV_WILLNEED to schedule read-ahead. I have various patches to do this on UFS. The naive version only triggered 16k reads. I tried hacking up the clustering code to allow these to cluster but that was quite complex and still hard to get correct, so I think it is worth dropping. john 14 Try to reuse VM object lock in pagedaemon's page scan kernel enhancement john assigned 2013-05-15T22:46:28-04:00 2013-05-15T22:49:47-04:00 This was another pagedaemon change suggested by alc@. One trick is figuring out a good way of developing a test case and a measurement to see if this makes any difference. john 19 Export CPU / NUMA topology to userland kernel enhancement john new 2013-05-15T22:58:34-04:00 2013-11-07T13:06:38-05:00 "One possible API suggested by brooks@: http://www.open-mpi.org/projects/hwloc/doc/" john 20 Port repyter to FreeBSD kernel enhancement john assigned 2013-05-15T22:59:32-04:00 2013-05-18T13:59:13-04:00 "Source for repytr is here: https://github.com/nelhage/reptyr" john 23 Add something like ipcs/ipcrm for POSIX IPC userland enhancement john assigned 2013-05-15T23:03:14-04:00 2013-05-18T14:00:29-04:00 At the very least it would be nice to list currently open shared memory objects and semaphores and provide a way to delete them. john 26 Port the broadcom wl driver kernel enhancement john accepted 2013-05-18T14:45:24-04:00 2013-05-20T08:28:16-04:00 Broadcom has a Linux driver with a binary blob and source (for Linux) for several broadcom wireless parts. john 40 Tools to evaluate NUMA-related performance userland enhancement new 2013-11-07T13:05:50-05:00 2013-11-07T13:05:50-05:00 Linux has a tool called numatop and a daemon called numad that we should investigate and possibly mimic. john 96 SMBIOS 64-bit table support kernel enhancement new 2015-03-05T06:55:26-05:00 2015-03-05T06:55:26-05:00 "Also need to export an SMBIOS table interface for this that the IPMI driver can use instead of having duplicate table parsing code. Would need to update the table parsing code in the loader as well as in the kernel." john 15 Rename boot2 to ufsboot boot task john assigned 2013-05-15T22:54:14-04:00 2013-05-18T13:58:35-04:00 Rename sys/i386/boot2 to sys/i386/ufsboot and /boot/boot to /boot/ufsboot. john 38 Write getenv(9) and TUNABLE(9) manpages task john started 2013-10-04T15:30:56-04:00 2013-10-22T16:31:21-04:00 Manpages for the in-kernel environment variable API as well as the TUNABLE API which sits on top of it. john 39 psutil.py issues userland task new 2013-10-15T10:44:02-04:00 2013-10-15T10:44:02-04:00 "http://code.google.com/p/psutil/issues/detail?id=373 May also look for other issues in psutil that are FreeBSD related while I'm there?" john 57 Investigate using SSE/AVX for amd64 libc routines userland task john accepted 2014-05-06T14:22:45-04:00 2014-05-06T14:23:27-04:00 Right now libc contains assembly versions of several commonly used routines like memcpy(), etc. These routines generally do not attempt to use SSE but rely on older primitives like 'rep movs'. john 61 Retire swi entirely kernel task john new 2014-09-19T11:10:45-04:00 2014-09-19T11:10:45-04:00 Just use plain kthreads or taskqueues for remaining swi handlers. They can use wakeup in place of swi_sched(). Having swi's adds extra complication to the interrupt code and don't really serve a distinct purpose without spls. john 62 Import extended timezone API userland task john new 2014-09-29T16:32:00-04:00 2016-01-28T11:25:20-05:00 This was a local patch at HRT, but the tzcode folks have adopted an upstream version from NetBSD that does the same thing. The task now would be to import the newer tzcode into stock FreeBSD and update manpages to document the new functions. john 63 Test TDF_SBDRY check kernel task john new 2014-10-02T14:29:20-04:00 2014-10-02T14:29:20-04:00 Add a check for interruptible sleeps holding locks that do not have TDF_SBDRY set and see if anything triggers that. If it does, see if those are bugs to be fixed, or if this assertion is infeasible. john 90 Kill basemem kernel task new 2015-01-23T18:21:31-05:00 2015-01-23T18:21:31-05:00 Remove the basemem variable from the x86 kernels and instead use loops over physavail/dumpavail. john 91 Re-port mcelog userland task new 2015-01-23T18:22:37-05:00 2015-03-05T07:16:16-05:00 Re-port changes to add FreeBSD support to a git clone of the official mcelog sources. john 92 Add per-mount client NFS stats like mountstats kernel task new 2015-01-23T18:23:48-05:00 2015-01-23T18:23:48-05:00 Similar to mountstats from Linux, track per-mount, per-RPC statistics including RTT, average bytes / operation, etc. john 95 Add a device_panic callback kernel task john new 2015-02-03T14:58:08-05:00 2015-02-03T14:58:08-05:00 The idea would be that drivers would get a chance to save off state during a panic that will end up in the crashdump. Drivers would be responsible for pre-allocating stuff ahead of time, etc. john 98 Update machine check code to handle recoverable UC kernel task new 2015-03-05T07:14:32-05:00 2015-03-05T07:14:32-05:00 In general compare the current machine check parsing against the latest SDM and add support for missing features, etc. john 7 Require busdma boundary parameters to be powers of 2 kernel defect john assigned 2013-05-15T18:10:35-04:00 2013-05-15T22:50:06-04:00 Just fail non power of 2 values with EINVAL or some such. john 34 Fix pci_cfgreg*() to handle domains kernel defect new 2013-07-24T12:36:20-04:00 2013-07-24T12:36:20-04:00 Add an explicit domain parameter to pci_cfgreg* and undo the hack for ia64 from r253560 john 24 Retire swi_vm kernel enhancement john assigned 2013-05-16T10:14:28-04:00 2013-05-18T14:03:28-04:00 Replace it with an MD dma swi handler on platforms that use bounce pages. john