[Bug 219216] sched_bind() blocks if the entropy pool is starved

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219216

--- Comment #5 from Peter Holm <pho at FreeBSD.org> ---
(In reply to Konstantin Belousov from comment #4)
Running the script or powerd++ & dd of /dev/random, does not trigger
any problems with my setup.

Here's some of the output from powerd++:

power: unknown, load:  129 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:  344 MHz, 
81 C
power: unknown, load:  137 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:  365 MHz, 
81 C
power: unknown, load:   94 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:  250 MHz, 
81 C
power: unknown, load:   71 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:  189 MHz, 
81 C
power: unknown, load:   47 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:  125 MHz, 
81 C
power: unknown, load:    4 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:   10 MHz, 
81 C
power: unknown, load:    4 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:   10 MHz, 
81 C
power: unknown, load:   17 MHz,  39 C, cpu0.freq: 1200 MHz, wanted:   45 MHz, 
81 C
power: unknown, load:   17 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:   45 MHz, 
81 C
power: unknown, load:   17 MHz,  40 C, cpu0.freq: 1200 MHz, wanted:   45 MHz, 
81 C
power: unknown, load:   17 MHz,  41 C, cpu0.freq: 1200 MHz, wanted:   45 MHz, 
81 C
power: unknown, load:    5 MHz,  41 C, cpu0.freq: 1200 MHz, wanted:   13 MHz, 
81 C
power: unknown, load:    0 MHz,  41 C, cpu0.freq: 1200 MHz, wanted:    0 MHz, 
81 C

My test box:
$ sysctl dev.cpu.0
dev.cpu.0.temperature: 35.0C
dev.cpu.0.coretemp.throttle_log: 0
dev.cpu.0.coretemp.tjmax: 91.0C
dev.cpu.0.coretemp.resolution: 1
dev.cpu.0.coretemp.delta: 56
dev.cpu.0.cx_method: C1/mwait/hwc C2/mwait/hwc/bma
dev.cpu.0.cx_usage_counters: 0 60
dev.cpu.0.cx_usage: 0.00% 100.00% last 13171us
dev.cpu.0.cx_lowest: C2
dev.cpu.0.cx_supported: C1/1/1 C2/2/41
dev.cpu.0.freq_levels: 2001/95000 2000/95000 1900/89224 1800/83561 1700/78011
1600/72573 1500/67246 1400/62042 1300/56932 1200/51931
dev.cpu.0.freq: 2001
dev.cpu.0.%domain: 0
dev.cpu.0.%parent: acpi0
dev.cpu.0.%pnpinfo: _HID=ACPI0007 _UID=0
dev.cpu.0.%location: handle=\_SB_.SCK0.CP00 _PXM=0
dev.cpu.0.%driver: cpu
dev.cpu.0.%desc: ACPI CPU
$

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