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e7d50326de
freebsd-nq/sys/kern
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Jeff Roberson e7d50326de ULE 2.0: 
- Remove the double queue mechanism for timeshare threads.  It was slow
   due to excess cache lines in play, caused suboptimal scheduling behavior
   with niced and other non-interactive processes, complicated priority
   lending, etc.
 - Use a circular queue with a floating starting index for timeshare threads.
   Enforces fairness by moving the insertion point closer to threads with
   worse priorities over time.
 - Give interactive timeshare threads real-time user-space priorities and
   place them on the realtime/ithd queue.
 - Select non-interactive timeshare thread priorities based on their cpu
   utilization over the last 10 seconds combined with the nice value.  This
   gives us more sane priorities and behavior in a loaded system as
   compared to the old method of using the interactivity score.  The
   interactive score quickly hit a ceiling if threads were non-interactive
   and penalized new hog threads.
 - Use one slice size for all threads.  The slice is not currently
   dynamically set to adjust scheduling behavior of different threads.
 - Add some new sysctls for scheduling parameters.

Bug fixes/Clean up:
 - Fix zeroing of td_sched after initialization in sched_fork_thread() caused
   by recent ksegrp removal.
 - Fix KSE interactivity issues related to frequent forking and exiting of
   kse threads.  We simply disable the penalty for thread creation and exit
   for kse threads.
 - Cleanup the cpu estimator by using tickincr here as well.  Keep ticks and
   ltick/ftick in the same frequency.  Previously ticks were stathz and
   others were hz.
 - Lots of new and updated comments.
 - Many many others.

Tested on:	up x86/amd64, 8way amd64.
2007-01-04 08:56:25 +00:00
..
bus_if.m - Revert making bus_generic_add_child() the default for BUS_ADD_CHILD(). 2006-09-11 22:20:37 +00:00
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh
imgact_aout.c Correct two vm object reference leaks in error cases. 2006-03-16 08:51:59 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Add vm map and object locking to each_writable_segment(). 2006-11-19 23:38:59 +00:00
imgact_gzip.c Maintain the lock on the vnode for most of exec_elfN_imgact(). 2005-12-24 04:57:50 +00:00
imgact_shell.c
inflate.c Normalize a significant number of kernel malloc type names: 2005-10-31 15:41:29 +00:00
init_main.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
init_sysent.c This commits the remake in kern/ make sysent to get 2006-11-03 18:57:49 +00:00
kern_acct.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_acl.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
kern_alq.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
kern_clock.c Align the interfaces for the various watchdogs and make the interface 2006-12-15 21:44:49 +00:00
kern_condvar.c Add second sleep queue so that sx and lockmgr can have separate sleep 2006-12-16 06:54:09 +00:00
kern_conf.c Fix the race between devfs_fp_check and devfs_reclaim. Derefence the 2006-10-20 07:59:50 +00:00
kern_context.c
kern_cpu.c - Print message about cpufreq and timecounter TSC 2006-03-03 02:06:04 +00:00
kern_descrip.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_environment.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_event.c Save exit status of an exiting process in kn_data in the knote. 2006-11-20 22:17:50 +00:00
kern_exec.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_exit.c Move sigqueue_take() call into proc_reparent(), this fixed bugs where 2006-10-25 06:18:04 +00:00
kern_fork.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
kern_idle.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
kern_intr.c Add a function to return the MD interrupt source cookie associated with 2006-12-12 19:20:19 +00:00
kern_jail.c Add a new priv(9) kernel interface for checking the availability of 2006-11-06 13:37:19 +00:00
kern_kse.c Fix a potential point of confusion. Art Ironport we've seen this end up 2006-12-12 08:01:55 +00:00
kern_kthread.c Don't do a PHOLD() in kthread_create() w/o a matching PRELE() in 2006-02-22 17:21:45 +00:00
kern_ktr.c Remove slightly oddly placed suser() call from the KTR/ALQ setup sysctl: 2006-09-09 16:09:01 +00:00
kern_ktrace.c ktrace_cv is no longer used - remove 2006-12-17 00:16:09 +00:00
kern_linker.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_lock.c track lock class name in a way that doesn't break WITNESS 2006-11-13 05:41:46 +00:00
kern_lockf.c
kern_malloc.c Increase usefulness of "show malloc" by moving from displaying the basic 2006-10-26 10:17:13 +00:00
kern_mbuf.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
kern_mib.c mp_ncpus is always (properly) initialized, even on UP kernels, so just use it. 2005-08-21 18:03:31 +00:00
kern_module.c Address a problem I missed in removing Giant from the kernel linker. Not 2006-06-26 18:34:45 +00:00
kern_mtxpool.c
kern_mutex.c - Fix some gcc warnings in lock_profile.h 2006-12-16 02:37:58 +00:00
kern_ntptime.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_physio.c
kern_pmc.c Fix -Wundef. 2005-12-04 02:12:43 +00:00
kern_poll.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
kern_priv.c Add a new priv(9) kernel interface for checking the availability of 2006-11-06 13:37:19 +00:00
kern_proc.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
kern_prot.c Add a new priv(9) kernel interface for checking the availability of 2006-11-06 13:37:19 +00:00
kern_resource.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
kern_rwlock.c track lock class name in a way that doesn't break WITNESS 2006-11-13 05:41:46 +00:00
kern_sema.c
kern_shutdown.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_sig.c break loop early if we know that there are at least two signals. 2006-12-25 03:00:15 +00:00
kern_subr.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
kern_switch.c - Add three new functions to support circular run queues. 2007-01-04 08:39:58 +00:00
kern_sx.c track lock class name in a way that doesn't break WITNESS 2006-11-13 05:41:46 +00:00
kern_synch.c - Fix schedgraph output with KSE threads. Call thread_switchout() after 2007-01-03 02:38:41 +00:00
kern_syscalls.c Make system call modules a bit more robust: 2006-08-01 16:32:20 +00:00
kern_sysctl.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
kern_tc.c Commit the results of the typo hunt by Darren Pilgrim. 2006-08-04 07:56:35 +00:00
kern_thr.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
kern_thread.c Prefer a more traditional spelling of inhibited in comments and panic 2006-12-31 15:56:04 +00:00
kern_time.c - Remove third parameter of itimer_find, the parameter is always zero. 2006-11-28 03:24:34 +00:00
kern_timeout.c Improve ktr(4) logging for callout(9) subsystem. Log all inserts and 2006-10-11 14:57:03 +00:00
kern_umtx.c Add a lwpid field into per-cpu structure, the lwpid represents current 2006-12-20 04:40:39 +00:00
kern_uuid.c Separate functions with a newline. 2006-07-17 21:00:42 +00:00
kern_xxx.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
ksched.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
link_elf_obj.c Linker set support depends on the magic __start_<section> and 2006-11-30 10:50:29 +00:00
link_elf.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
linker_if.m
Make.tags.inc Merge posix4/* into normal kernel hierarchy. 2006-11-11 16:26:58 +00:00
Makefile Add support for the generated file systrace_args.c. 2006-08-05 19:25:14 +00:00
makesyscalls.sh Merge posix4/* into normal kernel hierarchy. 2006-11-11 16:26:58 +00:00
md4c.c
md5c.c Fix a panic on sparc64 related to inproper aligment - we cannot assume, 2006-03-30 18:45:50 +00:00
p1003_1b.c Update #includes list. 2006-11-11 16:19:12 +00:00
posix4_mib.c Fix mispatch of includes list; allows my kernel to build successfully. 2006-11-12 03:34:03 +00:00
sched_4bsd.c Prefer a more traditional spelling of inhibited in comments and panic 2006-12-31 15:56:04 +00:00
sched_core.c Fix compiling. 2007-01-02 04:14:01 +00:00
sched_ule.c ULE 2.0: 2007-01-04 08:56:25 +00:00
serdev_if.m MFp4: Add the ipend() method to the serdev I/F to allow umbrella 2006-04-23 22:12:39 +00:00
subr_acl_posix1e.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
subr_autoconf.c Add a mutex to protect the list of interrupt config hooks. We do assume 2006-07-19 18:53:56 +00:00
subr_blist.c
subr_bus.c Add a default method for BUS_ADD_CHILD() that just calls 2006-09-11 19:41:31 +00:00
subr_clist.c
subr_clock.c Use utc_offset() where applicable, and hide the internals of it 2006-10-02 18:23:37 +00:00
subr_devstat.c
subr_disk.c Add a new I/O request - BIO_FLUSH, which basically tells providers below to 2006-10-31 21:11:21 +00:00
subr_eventhandler.c
subr_fattime.c Better naming of fattime conversion functions, they do convert to timespec 2006-10-24 10:27:23 +00:00
subr_firmware.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
subr_hints.c Use a sleep mutex instead of an sx lock for the kernel environment. This 2006-07-09 21:42:58 +00:00
subr_kdb.c Add a funny sysctl: debug.kdb.trap_code . 2006-06-18 12:27:59 +00:00
subr_kobj.c Increment kobj_lookup_misses on a miss rather than decrementing it. 2005-12-29 18:00:42 +00:00
subr_lock.c Bug fix for obscenely large wait times on uncontested locks 2006-12-04 22:15:50 +00:00
subr_log.c
subr_mbpool.c
subr_mchain.c
subr_module.c
subr_msgbuf.c
subr_param.c Partially revert revision 1.66, which contained a change that did not 2005-10-14 19:15:10 +00:00
subr_pcpu.c Fix 'show allpcpu' ddb command on non-x86. CPU IDs are in the range 0 .. 2005-11-03 21:06:29 +00:00
subr_power.c General consensus is that it would be even better to run this in a 2005-11-09 16:22:56 +00:00
subr_prf.c Flushing the buffer is conditional on actually using the buffer. Oops. 2006-11-30 07:25:52 +00:00
subr_prof.c Change the addupc_*() functions to use the uintfptr_t type for pc rather 2005-12-16 22:08:32 +00:00
subr_rman.c Fix an edge case in rman_manage_region() where it didn't handle a resource 2006-12-04 16:45:23 +00:00
subr_rtc.c Use utc_offset() where applicable, and hide the internals of it 2006-10-02 18:23:37 +00:00
subr_sbuf.c Make sbuf_copyin() return the number of bytes copied on success. 2005-12-23 11:49:53 +00:00
subr_scanf.c
subr_sleepqueue.c Cleaner fix for handling declaration of loop variable under INVARIANTS 2006-12-17 00:14:20 +00:00
subr_smp.c Rename the KDB_STOP_NMI kernel option to STOP_NMI and make it apply to all 2005-10-24 21:04:19 +00:00
subr_stack.c Correct typos 2006-05-28 22:15:28 +00:00
subr_taskqueue.c When starting up threads in taskqueue_start_threads create them 2006-05-24 22:11:07 +00:00
subr_trap.c Threading cleanup.. part 2 of several. 2006-12-06 06:34:57 +00:00
subr_turnstile.c Add a new 'show sleepchain' ddb command similar to 'show lockchain' except 2006-08-15 18:29:01 +00:00
subr_unit.c
subr_witness.c MUTEX_PROFILING has been generalized to LOCK_PROFILING. We now profile 2006-11-11 03:18:07 +00:00
sys_generic.c Prevent IOC_IN with zero size argument (this is only supported 2006-10-14 19:01:55 +00:00
sys_pipe.c Use pipe_direct_write() optimization only if the data is in process' memory. 2006-12-19 12:52:22 +00:00
sys_process.c Make KSE a kernel option, turned on by default in all GENERIC 2006-10-26 21:42:22 +00:00
sys_socket.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
syscalls.c This commits the remake in kern/ make sysent to get 2006-11-03 18:57:49 +00:00
syscalls.master Ok, here it is, we finally add SCTP to current. Note that this 2006-11-03 15:23:16 +00:00
systrace_args.c Ok, here it is, we finally add SCTP to current. Note that this 2006-11-03 15:23:16 +00:00
sysv_ipc.c For now, back out sysv_ipc.c:1.30, which caused shmget() with odd mode 2006-12-16 11:30:54 +00:00
sysv_msg.c MFP4: (part of) 110058 2006-12-20 19:26:30 +00:00
sysv_sem.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
sysv_shm.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
tty_compat.c Move the old BSD4.3 tty compatibility from (!BURN_BRIDGES && COMPAT_43) 2006-01-10 09:19:10 +00:00
tty_conf.c
tty_cons.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
tty_pts.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
tty_pty.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
tty_subr.c
tty_tty.c Use ctty instead of just returning. ctty just has a simple open that 2006-09-27 16:41:15 +00:00
tty.c Back out rev. 1.266. The real cause for the recent panics has been fixed 2006-12-20 02:49:59 +00:00
uipc_accf.c
uipc_cow.c Previously, nothing prevented the page that was returned by pmap_extract() 2005-10-23 07:41:56 +00:00
uipc_domain.c soreceive_generic(), and sopoll_generic(). Add new functions sosend(), 2006-07-24 15:20:08 +00:00
uipc_mbuf2.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
uipc_mbuf.c The prepend function did not handle non-pkthdr's correctly. 2006-12-21 19:58:04 +00:00
uipc_mqueue.c Merge posix4/* into normal kernel hierarchy. 2006-11-11 16:26:58 +00:00
uipc_sem.c Merge posix4/* into normal kernel hierarchy. 2006-11-11 16:26:58 +00:00
uipc_sockbuf.c Use sysctl_handle_long() instead of duplicating it's logic for 2006-09-06 21:59:36 +00:00
uipc_socket2.c Change two XXX's to two notes: the fact that SOCK_LOCK(so) == 2006-08-02 16:23:52 +00:00
uipc_socket.c Drop all received data mbufs from a socket's queue if the MT_SONAME 2006-12-23 21:07:07 +00:00
uipc_syscalls.c In kern_sendfile() fix the calculation of sbytes (the total number of bytes 2006-11-12 20:57:00 +00:00
uipc_usrreq.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
vfs_acl.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
vfs_aio.c Merge posix4/* into normal kernel hierarchy. 2006-11-11 16:26:58 +00:00
vfs_bio.c In rev. 1.514, iodone on async buffer may happen before code checks the 2006-12-20 09:22:31 +00:00
vfs_cache.c Axe Giant from vn_fullpath(9). The vnode -> pathname lookup should be 2006-06-16 05:09:28 +00:00
vfs_cluster.c Replace PG_BUSY with VPO_BUSY. In other words, changes to the page's 2006-10-22 04:28:14 +00:00
vfs_default.c change vop_lock handling to allowing tracking of callers' file and line for 2006-11-13 05:51:22 +00:00
vfs_export.c In vfs_export(), if we specify MNT_DELEXPORT in the struct export_args, 2006-12-16 15:50:36 +00:00
vfs_extattr.c Update comments to reflect changes in the extattrctl() code. 2006-12-23 00:30:03 +00:00
vfs_hash.c In vfs_hash_get(): mount point should never be changed 2006-04-18 08:05:08 +00:00
vfs_init.c Remove duplicate security checks already performed in kern_kldload(). 2006-06-26 18:33:32 +00:00
vfs_lookup.c Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h 2006-10-22 11:52:19 +00:00
vfs_mount.c Add a function vfs_deleteopt() which searches through the vfsoptlist 2006-12-16 15:44:03 +00:00
vfs_subr.c change vop_lock handling to allowing tracking of callers' file and line for 2006-11-13 05:51:22 +00:00
vfs_syscalls.c Following a repo-copy of vfs_syscalls.c to vfs_extattr.c, remove 2006-12-23 00:10:36 +00:00
vfs_vnops.c change vop_lock handling to allowing tracking of callers' file and line for 2006-11-13 05:51:22 +00:00
vnode_if.src change vop_lock handling to allowing tracking of callers' file and line for 2006-11-13 05:51:22 +00:00