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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2011-06-22 16:24:09 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-06-22 16:24:20 +0200 |
| commit | 6815823431296082fa20c2f14007e194424660b8 (patch) | |
| tree | 98bc558b3ce9c4f044a0fc5a3f99d6da86e7b895 /fs/jbd2/commit.c | |
| parent | [S390] s390: enforce HW limits for the initial sampling rate (diff) | |
| download | linux-rng-6815823431296082fa20c2f14007e194424660b8.tar.xz linux-rng-6815823431296082fa20c2f14007e194424660b8.zip | |
[S390] hwsampler: Set a sane default sampling rate
The sampling interval for the hardware sampler is specified in cycles.
(see SA23-2260-01 The Load-Program-Parameter and the CPU-Measurement
Facilities)
The current default value will therefore result in millions of samples.
This patch changes the default sampling interval to 4M, which will
result in ~1500 samples per second on a z196 reducing the overhead
of sampling.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'fs/jbd2/commit.c')
0 files changed, 0 insertions, 0 deletions