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Searched refs:contention (Results 1 – 25 of 29) sorted by relevance

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/Linux-v4.19/fs/ubifs/
Dshrinker.c70 static int shrink_tnc(struct ubifs_info *c, int nr, int age, int *contention) in shrink_tnc() argument
120 *contention = 1; in shrink_tnc()
156 static int shrink_tnc_trees(int nr, int age, int *contention) in shrink_tnc_trees() argument
179 *contention = 1; in shrink_tnc_trees()
189 *contention = 1; in shrink_tnc_trees()
199 freed += shrink_tnc(c, nr, age, contention); in shrink_tnc_trees()
295 int contention = 0; in ubifs_shrink_scan() local
311 freed = shrink_tnc_trees(nr, OLD_ZNODE_AGE, &contention); in ubifs_shrink_scan()
316 freed += shrink_tnc_trees(nr - freed, YOUNG_ZNODE_AGE, &contention); in ubifs_shrink_scan()
321 freed += shrink_tnc_trees(nr - freed, 0, &contention); in ubifs_shrink_scan()
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/Linux-v4.19/Documentation/locking/
Dlockstat.txt10 Because things like lock contention can severely impact performance.
45 con-bounces - number of lock contention that involved x-cpu data
61 It also tracks 4 contention points per class. A contention point is a call site
122 short separator (line 08, 13) from the contention points.
124 Lines 09-12 show the first 4 recorded contention points (the code
130 short separator. The contention points don't match the column descriptors,
131 they have two: contentions and [<IP>] symbol. The second set of contention
D00-INDEX6 - info on collecting statistics on locks (and contention).
Dlocktorture.txt16 different critical region behaviors. The amount of contention on the lock
Dww-mutex-design.txt345 contention for a new lock and hence a true chance of deadlock. In that
353 In general, not much contention is expected. The locks are typically used to
Drt-mutex-design.txt417 If there is contention on the lock, we go about the slow path
431 contention).
506 CMPXCHG. Since the taking of a mutex on contention always sets the
/Linux-v4.19/tools/perf/scripts/python/bin/
Dfutex-contention-report4 perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/futex-contention.py
/Linux-v4.19/kernel/rcu/
DKconfig149 against lock contention. Systems that synchronize their
152 lock contention levels acceptably low. Very large systems
158 skew them, which reduces lock contention enough that large
161 lock contention on the leaf-level rcu_node structures unless
168 kernel boot parameter to avoid contention on the rcu_node
/Linux-v4.19/kernel/
DKconfig.hz13 contention and cacheline bounces as a result of timer interrupts.
/Linux-v4.19/Documentation/trace/
Devents-kmem.rst72 contention on the zone->lru_lock.
82 for order-0 pages, reduces contention on the zone->lock and reduces the
/Linux-v4.19/Documentation/vm/
Dsplit_page_table_lock.rst9 multi-threaded applications due high contention on the lock. To improve
Dslub.rst135 (list_lock) where contention may occur.
/Linux-v4.19/Documentation/networking/
Dscaling.txt177 during CPU contention by dropping packets from large flows slightly
194 and cache contention) and toggled per CPU by setting the relevant bit
378 provides two benefits. First, contention on the device queue lock is
380 (contention can be eliminated completely if each CPU has its own
453 experience no contention. If there are fewer queues than CPUs, then the
Dena.txt145 - Reduced CPU/thread/process contention on a given Ethernet interface.
/Linux-v4.19/Documentation/devicetree/bindings/bus/
Dqcom,ebi2.txt78 drive the data bus after OE is de-asserted, in order to avoid contention on
/Linux-v4.19/Documentation/arm/
Dvlocks.txt147 reducing bus contention in contended cases.
/Linux-v4.19/tools/perf/Documentation/
Dperf-c2c.txt29 for cachelines with highest contention - highest number of HITM accesses.
/Linux-v4.19/drivers/block/paride/
DTransition-notes113 that the only possible contention is between scheduling ps_tq followed by
/Linux-v4.19/fs/squashfs/
DKconfig51 it eliminates a memcpy and it also removes the lock contention
/Linux-v4.19/Documentation/filesystems/
Dxfs-delayed-logging-design.txt642 items, it will get held for a significant time and so spin contention is a
658 possible that this lock will become a contention point, but given the short
659 hold time once per transaction I think that contention is unlikely.
679 much contention on the CIL lock, or too many context switches as a result of
681 given separate wait lists to reduce lock contention and the number of processes
Dpath-lookup.txt31 (usually, the root "/" or current working directory). So contention on these
/Linux-v4.19/Documentation/
Drobust-futexes.txt16 field. If userspace notices contention (the lock is already owned and
/Linux-v4.19/Documentation/cgroup-v1/
Dmemory.txt627 a. There is no memory contention
630 When the system detects memory contention or low memory, control groups
/Linux-v4.19/Documentation/RCU/
DRTFP.txt47 write-side contention and parallelize the other write-side overheads by
89 but reduces memory latency, contention, and locking overheads.
115 contention, reduces memory latency for readers, and parallelizes pipeline
/Linux-v4.19/mm/
DKconfig193 # space can be handled with less contention: split it at this NR_CPUS.

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