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mempress: change default PSI window duration to 2s

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This changes the PSI window duration we default to for watching memory
pressure events from 1s to 2s. This is because apparently the kernel
will soon disallow window durations other than 2s for unprivileged
processes.

Hence, we'll bump the threshold from 100m to 200ms, and the window from
1s to 2s.
This commit is contained in:
Lennart Poettering
2023-03-09 22:31:20 +01:00
parent 2208d96623
commit a617007417
5 changed files with 9 additions and 7 deletions
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src/basic/psi-util.h
+2 -2
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@@ -31,5 +31,5 @@ int is_pressure_supported(void);
/* Default parameters for memory pressure watch logic in sd-event and PID 1 */
#define MEMORY_PRESSURE_DEFAULT_TYPE "some"
#define MEMORY_PRESSURE_DEFAULT_THRESHOLD_USEC (100 * USEC_PER_MSEC)
#define MEMORY_PRESSURE_DEFAULT_WINDOW_USEC USEC_PER_SEC
#define MEMORY_PRESSURE_DEFAULT_THRESHOLD_USEC (200 * USEC_PER_MSEC)
#define MEMORY_PRESSURE_DEFAULT_WINDOW_USEC (2 * USEC_PER_SEC)