Johannes Weiner
b1d29ba82c
delayacct: track delays from thrashing cache pages ...
Delay accounting already measures the time a task spends in direct reclaim
and waiting for swapin, but in low memory situations tasks spend can spend
a significant amount of their time waiting on thrashing page cache. This
isn't tracked right now.
To know the full impact of memory contention on an individual task,
measure the delay when waiting for a recently evicted active cache page to
read back into memory.
Also update tools/accounting/getdelays.c:
[hannes@computer accounting]$ sudo ./getdelays -d -p 1
print delayacct stats ON
PID 1
CPU count real total virtual total delay total delay average
50318 745000000 847346785 400533713 0.008ms
IO count delay total delay average
435 122601218 0ms
SWAP count delay total delay average
0 0 0ms
RECLAIM count delay total delay average
0 0 0ms
THRASHING count delay total delay average
19 12621439 0ms
Link: http://lkml.kernel.org/r/20180828172258.3185-4-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Daniel Drake <drake@endlessm.com>
Tested-by: Suren Baghdasaryan <surenb@google.com>
Cc: Christopher Lameter <cl@linux.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Weiner <jweiner@fb.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Enderborg <peter.enderborg@sony.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-26 16:26:32 -07:00
mmc: mmci: Drop support for pdata GPIO numbers
2018-10-08 11:40:43 +02:00
virtchnl: Added support to exchange additional speed values
2018-10-03 07:42:29 -07:00
firmware /meson
fpga: add devm_fpga_region_create
2018-10-16 11:13:50 +02:00
This is the bulk of GPIO changes for the v4.20 series:
2018-10-23 08:45:05 +01:00
KVM updates for v4.20
2018-10-25 17:57:35 -07:00
power supply and reset changes for the v4.20 series
2018-10-25 06:28:08 -07:00
First merge window pull request
2018-10-26 07:38:19 -07:00
mmc: core: add helper to see if a host is doing a retune
2018-10-08 11:40:43 +02:00
SPI NOR changes:
2018-10-23 01:09:22 +01:00
netfilter: nft_osf: Add ttl option support
2018-10-16 10:01:48 +02:00
arm64: perf: Reject stand-alone CHAIN events for PMUv3
2018-10-12 15:25:17 +01:00
USB/PHY patches for 4.20-rc1
2018-10-26 08:14:13 -07:00
USB/PHY patches for 4.20-rc1
2018-10-26 08:14:13 -07:00
First merge window pull request
2018-10-26 07:38:19 -07:00
regulator/mfd: Support for the ROHM BD71847
2018-09-28 15:07:30 +01:00
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-10-24 11:22:39 +01:00
Merge remote-tracking branch 'spi/topic/of' into spi-next
2018-10-21 17:00:17 +01:00
gss_krb5: Remove VLA usage of skcipher
2018-09-28 12:46:07 +08:00
USB/PHY patches for 4.20-rc1
2018-10-26 08:14:13 -07:00
pci-v4.20-changes
2018-10-25 06:50:48 -07:00
ACPI/ADXL: Add address translation interface using an ACPI DSM
2018-10-16 10:03:00 +02:00
signal: Distinguish between kernel_siginfo and siginfo
2018-10-03 16:47:43 +02:00
blkcg: reassociate bios when make_request() is called recursively
2018-10-20 15:39:55 -06:00
blkcg: fix edge case for blk_get_rl() under memory pressure
2018-10-20 15:39:54 -06:00
blk-mq: provide helper for setting up an SQ queue and tag set
2018-10-15 20:05:18 -06:00
block: Move power management code into a new source file
2018-09-26 15:11:28 -06:00
pci-v4.20-changes
2018-10-25 06:50:48 -07:00
bpf: introduce per-cpu cgroup local storage
2018-10-01 16:18:32 +02:00
bpf: add queue and stack maps
2018-10-19 13:24:31 -07:00
bpf: add queue and stack maps
2018-10-19 13:24:31 -07:00
bpf: add verifier callback to get stack usage info for offloaded progs
2018-10-08 10:24:12 +02:00
ext4: convert fault handler to use vm_fault_t type
2018-10-02 22:20:50 -04:00
cgroup: Fix dom_cgrp propagation when enabling threaded mode
2018-10-04 13:28:08 -07:00
Merge branch 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2018-10-25 17:15:46 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-10-25 11:14:36 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-10-25 11:14:36 -07:00
s390 updates for the 4.20 merge window
2018-10-23 11:14:47 +01:00
x86/objtool: Use asm macros to work around GCC inlining bugs
2018-10-04 11:24:58 +02:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2018-10-25 16:43:35 -07:00
signal: Distinguish between kernel_siginfo and siginfo
2018-10-03 16:47:43 +02:00
coresight: Add support for CLAIM tag protocol
2018-09-25 20:09:19 +02:00
cpuidle: menu: Fix wakeup statistics updates for polling state
2018-10-04 10:23:37 +02:00
kdump, proc/vmcore: Enable kdumping encrypted memory with SME enabled
2018-10-06 12:09:26 +02:00
crypto: user - Implement a generic crypto statistics
2018-09-28 12:46:25 +08:00
locking/lockdep: Make global debug_locks* variables read-mostly
2018-10-19 07:53:18 +02:00
delayacct: track delays from thrashing cache pages
2018-10-26 16:26:32 -07:00
PM / devfreq: Make update_devfreq() public
2018-10-02 10:16:41 +09:00
Driver core patches for 4.20-rc1
2018-10-26 08:42:25 -07:00
dma-debug: Check for drivers mapping invalid addresses in dma_map_single()
2018-10-08 09:44:17 +02:00
dma-direct: implement complete bus_dma_mask handling
2018-10-01 07:28:03 -07:00
dma-mapping: translate __GFP_NOFAIL to DMA_ATTR_NO_WARN
2018-10-09 15:08:26 +02:00
dns: Allow the dns resolver to retrieve a server set
2018-10-04 09:40:52 -07:00
EDAC: Raise the maximum number of memory controllers
2018-09-27 07:52:05 +02:00
efi/x86: Handle page faults occurring while running EFI runtime services
2018-09-26 12:14:55 +02:00
block: move call of scheduler's ->completed_request() hook
2018-09-27 17:34:52 -06:00
f2fs: guarantee journalled quota data by checkpoint
2018-10-22 17:54:47 -07:00
bpf: add cg_skb_is_valid_access for BPF_PROG_TYPE_CGROUP_SKB
2018-10-19 13:49:34 -07:00
vfs: swap names of {do,vfs}_clone_file_range()
2018-09-24 10:54:01 +02:00
This is the 4.19-rc6 release
2018-10-01 08:58:57 -06:00
Merge branch 'for-4.20/logitech-highres' into for-linus
2018-10-23 13:35:22 +02:00
mm: remove references to vm_insert_pfn()
2018-10-26 16:25:20 -07:00
mremap: properly flush TLB before releasing the page
2018-10-18 11:30:52 +02:00
mm: migration: fix migration of huge PMD shared pages
2018-10-05 16:32:04 -07:00
hwrng: core - document the quality field
2018-10-05 10:16:56 +08:00
hwmon: (core) Add hwmon_in_enable attribute
2018-10-10 20:37:13 -07:00
vmbus: split ring buffer allocation from open
2018-09-25 20:33:24 +02:00
mac80211: minstrel: Enable STBC and LDPC for VHT Rates
2018-10-11 16:01:00 +02:00
LSM: Convert from initcall to struct lsm_info
2018-10-10 20:40:21 -07:00
genirq: Fix grammar s/an /a /
2018-10-09 07:50:41 +02:00
fs/iomap.c: change return type to vm_fault_t
2018-10-26 16:25:18 -07:00
irqchip/irq-mvebu-sei: Add new driver for Marvell SEI
2018-10-02 12:00:08 +01:00
jump_label: Annotate entries that operate on __init code earlier
2018-09-27 17:56:48 +02:00
leds: core: Introduce LED pattern trigger
2018-10-11 21:55:58 +02:00
lightnvm: pblk: fix mapping issue on failed writes
2018-10-09 08:25:07 -06:00
include/linux/linkage.h: align weak symbols
2018-10-26 16:25:18 -07:00
net: phy: Replace phy driver features u32 with link_mode bitmap
2018-10-01 22:55:36 -07:00
locking/lockdep: Make class->ops a percpu counter and move it under CONFIG_DEBUG_LOCKDEP=y
2018-10-09 09:56:33 +02:00
Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2018-10-24 11:49:35 +01:00
mm: don't miss the last page because of round-off error
2018-10-26 16:25:19 -07:00
mm: rework memcg kernel stack accounting
2018-10-26 16:25:19 -07:00
PCI/P2PDMA: Add PCI p2pmem DMA mappings to adjust the bus offset
2018-10-17 12:18:16 -05:00
net: phy: micrel: add Microchip KSZ9131 initial driver
2018-10-19 17:02:23 -07:00
net: phy: Add limkmode equivalents to some of the MII ethtool helpers
2018-10-01 22:55:36 -07:00
mm: remove vm_insert_pfn()
2018-10-26 16:25:20 -07:00
Revert "mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks"
2018-10-26 16:25:19 -07:00
mm: workingset: tell cache transitions from workingset thrashing
2018-10-26 16:26:32 -07:00
Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2018-10-24 11:49:35 +01:00
net: Plumb support for filtering ipv4 and ipv6 multicast route dumps
2018-10-16 00:13:39 -07:00
genirq/msi: Allow creation of a tree-based irqdomain for platform-msi
2018-10-02 11:16:38 +01:00
UAPI: ndctl: Remove use of PAGE_SIZE
2018-10-17 13:56:58 -07:00
FDDI: defza: Support capturing outgoing SMT traffic
2018-10-15 21:46:06 -07:00
netfilter: avoid erronous array bounds warning
2018-09-28 14:47:40 +02:00
netlink: Add answer_flags to netlink_callback
2018-10-16 00:13:12 -07:00
netpoll: allow cleanup to be synchronous
2018-10-19 17:01:43 -07:00
nvme: call nvme_complete_rq when nvmf_check_ready fails for mpath I/O
2018-10-01 14:16:13 -07:00
nvmem: use EOPNOTSUPP instead of ENOSYS
2018-09-28 15:14:55 +02:00
nvmem: use EOPNOTSUPP instead of ENOSYS
2018-09-28 15:14:55 +02:00
mm: workingset: tell cache transitions from workingset thrashing
2018-10-26 16:26:32 -07:00
PCI: Remove pci_set_dma_max_seg_size()
2018-10-10 15:47:00 -05:00
PCI/P2PDMA: Introduce configfs/sysfs enable attribute helpers
2018-10-17 12:18:17 -05:00
pci-v4.20-changes
2018-10-25 06:50:48 -07:00
pci-v4.20-changes
2018-10-25 06:50:48 -07:00
percpu-refcount: Introduce percpu_ref_resurrect()
2018-09-26 15:11:29 -06:00
include/linux/pfn_t.h: force '~' to be parsed as an unary operator
2018-10-26 16:25:18 -07:00
net: phy: improve handling delayed work
2018-10-01 23:14:10 -07:00
PM / Domains: Document flags for genpd
2018-10-18 12:25:10 +02:00
signal: Distinguish between kernel_siginfo and siginfo
2018-10-03 16:47:43 +02:00
pstore/ram: Clarify resource reservation labels
2018-10-22 07:11:58 -07:00
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-10-24 11:22:39 +01:00
spi: pxa2xx: Add devicetree support
2018-10-11 15:28:04 +01:00
soc: qcom: geni: Make version macros simpler
2018-09-23 21:28:00 -07:00
firmware: qcom: scm: Add WLAN VMID for Qualcomm SCM interface
2018-10-13 20:31:37 +03:00
Merge remote-tracking branches 'regmap/topic/noinc' and 'regmap/topic/single-rw' into regmap-next
2018-10-21 12:07:26 +01:00
net: sched: extend Qdisc with rcu
2018-09-25 20:17:35 -07:00
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-10-24 11:22:39 +01:00
signal: Distinguish between kernel_siginfo and siginfo
2018-10-03 16:47:43 +02:00
Revert "serial: sh-sci: Remove SCIx_RZ_SCIFA_REGTYPE"
2018-10-02 14:38:02 -07:00
signal: Guard against negative signal numbers in copy_siginfo_from_user32
2018-10-10 20:34:14 -05:00
signal: Use a smaller struct siginfo in the kernel
2018-10-03 16:50:39 +02:00
net: skbuff.h: Mark expected switch fall-throughs
2018-10-17 22:31:30 -07:00
bpf: sk_msg program helper bpf_msg_push_data
2018-10-20 21:37:11 +02:00
mm, slab/slub: introduce kmalloc-reclaimable caches
2018-10-26 16:26:31 -07:00
smp,cpumask: introduce on_each_cpu_cond_mask
2018-10-09 16:51:11 +02:00
init: add arch_call_rest_init to allow stack switching
2018-10-09 11:20:55 +02:00
lib: Add memcat_p(): paste 2 pointer arrays together
2018-10-11 12:12:55 +02:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2018-10-12 12:35:02 +02:00
mm: workingset: tell cache transitions from workingset thrashing
2018-10-26 16:26:32 -07:00
tcp: do not change tcp_wstamp_ns in tcp_mstamp_refresh
2018-10-15 22:56:41 -07:00
thunderbolt: Convert rest of the driver files to use SPDX identifier
2018-10-02 15:52:08 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-10-25 11:14:36 -07:00
tracepoint: Fix tracepoint array element size mismatch
2018-10-17 15:35:29 -04:00
tracepoint: Fix tracepoint array element size mismatch
2018-10-17 15:35:29 -04:00
change semantics of ldisc ->compat_ioctl()
2018-10-13 00:50:53 -04:00
uio: introduce UIO_MEM_IOVA
2018-09-25 20:33:24 +02:00
umh: Add command line to user mode helpers
2018-10-22 19:37:36 -07:00
net/packet: fix packet drop as of virtio gso
2018-10-04 22:23:15 -07:00
scsi: sched/wait: Add wait_event_lock_irq_timeout for TASK_UNINTERRUPTIBLE usage
2018-10-16 00:11:13 -04:00
