1getloadavg(3) Library Functions Manual getloadavg(3)
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6 getloadavg - get system load averages
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9 Standard C library (libc, -lc)
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12 #include <stdlib.h>
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14 int getloadavg(double loadavg[], int nelem);
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16 Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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18 getloadavg():
19 Since glibc 2.19:
20 _DEFAULT_SOURCE
21 In glibc up to and including 2.19:
22 _BSD_SOURCE
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25 The getloadavg() function returns the number of processes in the system
26 run queue averaged over various periods of time. Up to nelem samples
27 are retrieved and assigned to successive elements of loadavg[]. The
28 system imposes a maximum of 3 samples, representing averages over the
29 last 1, 5, and 15 minutes, respectively.
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32 If the load average was unobtainable, -1 is returned; otherwise, the
33 number of samples actually retrieved is returned.
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36 For an explanation of the terms used in this section, see at‐
37 tributes(7).
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39 ┌────────────────────────────────────────────┬───────────────┬─────────┐
40 │Interface │ Attribute │ Value │
41 ├────────────────────────────────────────────┼───────────────┼─────────┤
42 │getloadavg() │ Thread safety │ MT-Safe │
43 └────────────────────────────────────────────┴───────────────┴─────────┘
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46 BSD.
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49 4.3BSD-Reno, Solaris. glibc 2.2.
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52 uptime(1), proc(5)
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56Linux man-pages 6.05 2023-07-20 getloadavg(3)