Mainly a resync.
. Manfred sent me a revised unmap-page-debugging patch which promptly
broke. All slab changes have been dropped out so he can have a clear run
at that.
. New toy. Called, for the lack of a better name, "sleepometer":
An instrumentation patch which attempts to work out where all that idle
time is coming from.
cat /proc/sleepo
fs/select.c:255(schedule_timeout) 119 204415008 1717773 37026565
kernel/exit.c:1056(schedule) 10 47496358 4749635 23686014
fs/namei.c:1247(down) 1 53708 53708 53708
fs/namei.c:344(down) 4 67425 16856 33478
fs/jbd/journal.c:197(schedule) 5 96894718 19378943 44777091
Tells us that four down() attempts at fs/namei.c:344 blocked. The total
amount of time spent blocked was 67425 microseconds. The average was 16845
us and the maximum was 33478 us.
Bear in mind that if 100 processes block at a certain point for one
second, this tool will claim that 100 seconds were spent blocked at that
point.
Which is quite reasonable, but some care is needed when interpreting the
results.
The following operations are instrumented:
down()
down_read()
down_write()
schedule()
schedule_timeout()
io_schedule()
io_schedule_timeout()
CONFIG_SLEEPOMETER is currently broken with CONFIG_PREEMPT due to
#include hell.
Reading /proc/sleepo clears all the current stats.
Changes since 2.5.70-mm9:
linus.patch
Latest Linus tree
-generic-numa-fixes.patch
-compat_ioctl-fixes.patch
-synaptics.patch
-synaptics-cleanup.patch
-es7000-01-generic.patch
-es7000-02-subarch.patch
-ppc64-fixup.patch
-ppc64-knr-to-ansi.patch
-time-fixes-cleanup-1.patch
-time-fixes-cleanup-2.patch
-ppc64-do_settimeofday-update.patch
-sparc64-do_settimeofday-update.patch
-x86_64-do_settimeofday-update.patch
-ia64-do_settimeofday-update.patch
-parisc-do_settimeofday-update.patch
-s390-do_settimeofday-update.patch
-alpha-do_settimeofday-update.patch
-arm-do_settimeofday-update.patch
-cris-do_settimeofday-update.patch
-m68k-do_settimeofday-update.patch
-ppc-do_settimeofday-update.patch
-arm26-do_settimeofday-update.patch
-sh-do_settimeofday-update.patch
-sparc-do_settimeofday-update.patch
-um-do_settimeofday-update.patch
-v850-do_settimeofday-update.patch
-centrino-cpufreq-driver.patch
-ds-01-arcnet-oops-fix.patch
-remove_anon_hash_chain.patch
-sched-cleanup-2.patch
-shmem-license-revert.patch
-lsm-1-early-init.patch
-lsm-2-remove-hook.patch
-lsm-3-remove-inode_permission_lite.patch
-lsm-4-setfsuid-fix.patch
-writeback-memory-backed-fix.patch
-make-pid_max-readable.patch
Merged
+statfs64-3-fixes-1.patch
Fix reiserfs statfs() EOVERFLOW
-unmap-page-debugging-2.patch
-slab-poisoning-fix.patch
Dropped, pending some rework.
-mark-inode-dirty-debug.patch
Dropped
+remove-swapper_inode.patch
Remove swapper_inode.
+workqueue-reorg-fix.patch
CPU hotplug preparation
+yenta-unload-oops-fix.patch
Fix module unload crash
+task_struct-use-after-free-fix.patch
Fix task refcounting buglet
+rpc-depopulate-fix.patch
Fix NFS oopses
+sleepometer.patch
sleep instrumentation
All 159 patches:
linus.patch
mm.patch
add -mmN to EXTRAVERSION
kgdb-ga.patch
kgdb stub for ia32 (George Anzinger's one)
kgdb-use-ggdb.patch
HZ-100.patch
config_spinline.patch
uninline spinlocks for profiling accuracy.
ppc64-bat-initialisation-fix.patch
ppc64: BAT initialisation fix
ppc64-pci-update.patch
ppc64-reloc_hide.patch
ppc64-semaphore-reimplementation.patch
ppc64: use the ia32 semaphore implementation
sym-do-160.patch
make the SYM driver do 160 MB/sec
x86_64-fixes.patch
x86_64 fixes
irqreturn-snd-via-fix.patch
via sound irqreturn fix
config-PAGE_OFFSET.patch
Configurable kenrel/user memory split
lru_cache_add-check.patch
lru_cache_add debug check
delay-ksoftirqd-fallback.patch
Try harded in IRQ context before falling back to ksoftirqd
fb-image-depth-fix.patch
fbdev image depth fix
ds-09-vicam-usercopy-fix.patch
vicam usercopy fix
buffer-debug.patch
buffer.c debugging
show_stack-cleanup.patch
show_stack() portability and cleanup patch
ppc64-show_stack.patch
e100-use-after-free-fix.patch
statfs64-3.patch
Add system calls statfs64 and fstatfs64
statfs64-3-fixes-1.patch
VM_RESERVED-check.patch
VM_RESERVED check
rcu-stats.patch
RCU statistics reporting
ide_setting_sem-fix.patch
hugetlbfs-size-inodes-mount-option.patch
hugetlbfs: specify size & inodes at mount
reslabify-pgds-and-pmds.patch
re-slabify i386 pgd's and pmd's
linux-isp.patch
isp-update-1.patch
isp-remove-pci_detect.patch
list_del-debug.patch
list_del debug check
airo-schedule-fix.patch
airo.c: don't sleep in atomic regions
resurrect-batch_requests.patch
bring back the batch_requests function
kblockd.patch
Create `kblockd' workqueue
cfq-infrastructure.patch
elevator-completion-api.patch
elevator completion API
as-iosched.patch
anticipatory I/O scheduler
as-proc-read-write.patch
AS: pgbench improvement
as-discrete-read-fifo-batches.patch
AS: discrete read fifo batches
as-sync-async.patch
AS sync/async batches
as-hash-removal-fix.patch
AS: hash removal fix
as-jumbo-patch-for-scsi.patch
AS jumbo patch (for SCSI and TCQ)
as-stupid.patch
AS: fix stupid thinko
as-no-batch-antic-limit.patch
AS: no batch-antic-limit
as-autotune-write-batches.patch
AS: autotune write batches
as-div-by-zero-fix.patch
AS: divide by zero fix
as-more-HZ.patch
AS: more HZ != 1000 fixes
as-even-more-write-batch-tuning.patch
AS: update_write_batch tuning
as-locking.patch
AS locking
as-HZ.patch
AS HZ fixes
as-double-free-and-debug.patch
AS: fix a leak + more debugging
as-fix-seek-estimation.patch
AS: maybe repair performance drop of random read O_DIRECT
as-fix-seeky-loads.patch
AS: fix IBM's seek load
unplug-use-kblockd.patch
Use kblockd for running request queues
cfq-2.patch
CFQ scheduler, #2
CFQ: update to rq-dyn API
cfq-hash-removal-fix.patch
CFQ: hash removal fix
cfq-list_del-fix.patch
CFQ: empty the queuelist
per-queue-nr_requests.patch
per queue nr_requests
blk-invert-watermarks.patch
blk_congestion_wait threshold cleanup
blk-fair-batches.patch
blk-fair-batches
blk-as-hint.patch
blk-as-hint
get_request_wait-oom-fix.patch
handle OOM in get_request_wait().
blk-fair-batches-2.patch
blk fair batches #2
print-build-options-on-oops.patch
print a few config options on oops
mmap-prefault.patch
prefault of executable mmaps
bio-debug-trap.patch
BIO debugging patch
sound-irq-hack.patch
show_task-free-stack-fix.patch
show_task() fix and cleanup
put_task_struct-debug.patch
ia32-mknod64.patch
mknod64 for ia32
ext2-64-bit-special-inodes.patch
ext2: support for 64-bit device nodes
ext3-64-bit-special-inodes.patch
ext3: support for 64-bit device nodes
64-bit-dev_t-kdev_t.patch
64-bit dev_t and kdev_t
oops-dump-preceding-code.patch
i386 oops output: dump preceding code
lockmeter.patch
ext3-no-bkl.patch
ext3: move lock_kernel() down into the JBD layer.
journal_get_write_access-speedup.patch
JBD: journal_get_write_access() speedup
ext3-concurrent-block-inode-allocation.patch
ext3: concurrent block/inode allocation
Fix orlov allocator boundary case
ext3-concurrent-block-allocation-hashed.patch
ext3: scalable counters and locks
fix ext3 inode allocator race
jbd-010-b_committed_data-race-fix.patch
JBD: fix race over access to b_committed_data
jbd-020-locking-schema.patch
JBD: plan JBD locking schema
jbd-030-remove-splice_lock.patch
JBD: remove jh_splice_lock
jbd-040-journal_add_journal_head-locking.patch
JBD: fine-grain journal_add_journal_head locking
jbd-045-rename-journal_unlock_journal_head.patch
JBD: rename journal_unlock_journal_head to journal_put_journal_head
jbd-050-b_frozen_data-locking.patch
JBD: Finish protection of journal_head.b_frozen_data
jbd-060-b_committed_data-locking.patch
JBD: implement b_committed_data locking
jbd-070-b_transaction-locking.patch
JBD: implement b_transaction locking rules
jbd-080-b_next_transaction-locking.patch
JBD: Implement b_next_transaction locking rules
jbd-090-b_tnext-locking.patch
JBD: b_tnext locking
jbd-100-remove-journal_datalist_lock.patch
JBD: remove journal_datalist_lock
jbd-110-t_nr_buffers-locking.patch
JBD: t_nr_buffers locking
jbd-120-t_updates-locking.patch
JBD: t_updates locking
jbd-130-t_outstanding_credits-locking.patch
JBD: implement t_outstanding_credits locking
jbd-140-t_jcb-locking.patch
JBD: implement t_jcb locking
jbd-150-j_barrier_count-locking.patch
JBD: implement j_barrier_count locking
jbd-160-j_running_transaction-locking.patch
JBD: implement j_running_transaction locking
jbd-170-j_committing_transaction-locking.patch
JBD: implement j_committing_transaction locking
jbd-180-j_checkpoint_transactions.patch
JBD: implement j_checkpoint_transactions locking
jbd-190-j_head-locking.patch
JBD: implement journal->j_head locking
jbd-200-j_tail-locking.patch
JBD: implement journal->j_tail locking
jbd-210-j_free-locking.patch
JBD: implement journal->j_free locking
jbd-220-j_commit_sequence-locking.patch
JBD: implement journal->j_commit_sequence locking
jbd-230-j_commit_request-locking.patch
JBD: implement j_commit_request locking
jbd-240-dual-revoke-tables.patch
JBD: implement dual revoke tables.
jbd-250-remove-sleep_on.patch
JBD: remove remaining sleep_on()s
jbd-300-remove-lock_kernel.patch
JBD: remove lock_kernel()
jbd-400-remove-lock_journal.patch
JBD: remove lock_journal()
jbd-510-h_credits-fix.patch
JBD: journal_release_buffer: handle credits fix
jbd-520-journal_unmap_buffer-race.patch
JBD: journal_unmap_buffer race fix
jbd-530-walk_page_buffers-race-fix.patch
ext3: ext3_writepage race fix
jbd-540-journal_try_to_free_buffers-race-fix.patch
JBD: buffer freeing non-race comment
jbd-550-locking-checks.patch
JBD: add some locking assertions
jbd-570-transaction-state-locking.patch
JBD: additional transaction shutdown locking
jbd-580-log_start_commit-race-fix.patch
JBD: fix log_start_commit race
jbd-590-do_get_write_access-speedup.patch
JBD: do_get_write_access() speedup
ext3-010-fix-journalled-data.patch
ext3: fix data=journal mode
ext3-035-journal_try_to_free_buffers-race-fix.patch
ext3-040-recursive-ext3_write_inode-check.patch
ext3: add a dump_stack()
ext3-050-ioctl-transaction-leak.patch
ext3: fix error-path handle leak
ext3-070-xattr-clone-leak-fix.patch
Fix leak in ext3_acl_chmod()
ext3-080-remove-block-inode-count-message.patch
ext3: remove mount-time diagnostic messages
jbd-600-journal_dirty_metadata-speedup.patch
JBD: journal_dirty_metadata() speedup
jbd-610-journal_dirty_metadata-diags.patch
JBD: journal_dirty_metadata diagnostics
jbd-620-commit-vs-start-race-fix.patch
JBD: fix race between journal_commit_transaction and start_this_handle
ext3-090-journalled-writepage-vs-truncate-fix.patch
ext3: fix data=journal for small blocksize
jbd-630-remove-j_commit_timer_active.patch
JBD: remove j_commit_timer_active
jbd-650-truncate-ordered-pages.patch
ext3: explicitly free truncated pages
jbd-660-log_do_checkpoint-fix.patch
JBD: log_do_checkpoint() locking fixes
jbd-670-log_start_commit-locking-fix.patch
JBD: fix locking around log_start_commit()
jbd-680-log_wait_for_space-fix.patch
JBD: hold onto j_state_lock after log_wait_for_space().
invalidate_mmap_range.patch
Interface to invalidate regions of mmaps
aio-01-retry.patch
AIO: Core retry infrastructure
aio-02-lockpage_wq.patch
AIO: Async page wait
aio-03-fs_read.patch
AIO: Filesystem aio read
aio-04-buffer_wq.patch
AIO: Async buffer wait
aio-05-fs_write.patch
AIO: Filesystem aio write
aio-05-fs_write-fix.patch
aio-06-bread_wq.patch
AIO: Async block read
aio-06-bread_wq-fix.patch
aio-07-ext2getblk_wq.patch
AIO: Async get block for ext2
aio-poll.patch
aio_poll
aio-poll: don't put extern decls in .c!
O_SYNC-speedup-2.patch
speed up O_SYNC writes
aio-09-o_sync.patch
aio O_SYNC
aio-10-BUG-fix.patch
AIO: fix a BUG
aio-11-workqueue-flush.patch
AIO: flush workqueues before destroying ioctx'es
aio-12-readahead.patch
AIO: readahead fixes
vfsmount_lock.patch
From: Maneesh Soni <maneesh@in.ibm.com>
Subject: [patch 1/2] vfsmount_lock
syncppp-locking-fix.patch
syncppp locking fix
sched-hot-balancing-fix.patch
fix for CPU scheduler load distribution
truncate-pagefault-race-fix.patch
Fix vmtruncate race and distributed filesystem race
remove-swapper_inode.patch
remove swapper_inode
sync-write-more-pages.patch
dirty inode writeback fix
workqueue-reorg-fix.patch
workqueue.c subtle fix and core extraction
yenta-unload-oops-fix.patch
fix yenta unload oops
task_struct-use-after-free-fix.patch
proc_pid_lookup use-after-free fix
rpc-depopulate-fix.patch
Subject: Re: Linux 2.5.71
sleepometer.patch
sleep instrumentation
-
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