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* Re: lockup when C1E and high-resolution timers enabled
@ 2015-06-14  3:13 Daniel J Blueman
  2015-06-14  4:39 ` Christoph Fritz
  0 siblings, 1 reply; 15+ messages in thread
From: Daniel J Blueman @ 2015-06-14  3:13 UTC (permalink / raw)
  To: Christoph Fritz; +Cc: Linux Kernel

On Sunday, June 14, 2015 at 4:00:06 AM UTC+8, Christoph Fritz wrote:
> Hi,
>
>  on following computer configuration, I do get hard lockup under heavy
> IO-Load (using rsync):
>
>  - CONFIG_HIGH_RES_TIMERS=y
>  - CPU: AMD FX(tm)-8350 Eight-Core Processor (family 0x15 model 0x2)
>  - Motherboard: 'GA-970A-UD3P (rev. 1.0)' AMD 970/SB950
>  - BIOS: C1E enabled (on 'GA-970A-UD3P' there is no disable option)
>  - Kernels: 4.1.0-rc6, 4.0.x, 3.16.x
>
> Tests:
>  - add kernel parameter "idle=halt" -> system runs fine
>  - disable CONFIG_HIGH_RES_TIMERS -> system runs fine
>  - change motherboard and disable C1E -> system runs fine
>  - change CPU to AMD Phenom II X6 Processor -> system runs fine
[..]

C1E disconnects HyperTransport links when all cores enter C1 (halt)
for a period of time; this is all at the platform level, so isn't due
to the kernel. The AMD AGESA code which controls the setup of this
mechanism is updated in the F2g BIOS:
http://www.gigabyte.com/products/product-page.aspx?pid=4717#bios

Did you try both BIOS releases with defaults?

If still issues, also try with the current family 10h microcode from
http://www.amd64.org/microcode/amd-ucode-latest.tar.bz2

Thanks,
  Daniel
-- 
Daniel J Blueman

^ permalink raw reply	[flat|nested] 15+ messages in thread
* lockup when C1E and high-resolution timers enabled
@ 2015-06-13 19:53 Christoph Fritz
  2015-06-13 20:19 ` Heinz Diehl
  0 siblings, 1 reply; 15+ messages in thread
From: Christoph Fritz @ 2015-06-13 19:53 UTC (permalink / raw)
  To: linux-kernel; +Cc: Thomas Gleixner

Hi,

 on following computer configuration, I do get hard lockup under heavy
IO-Load (using rsync):

 - CONFIG_HIGH_RES_TIMERS=y
 - CPU: AMD FX(tm)-8350 Eight-Core Processor (family 0x15 model 0x2)
 - Motherboard: 'GA-970A-UD3P (rev. 1.0)' AMD 970/SB950
 - BIOS: C1E enabled (on 'GA-970A-UD3P' there is no disable option)
 - Kernels: 4.1.0-rc6, 4.0.x, 3.16.x

Tests:
 - add kernel parameter "idle=halt" -> system runs fine
 - disable CONFIG_HIGH_RES_TIMERS -> system runs fine
 - change motherboard and disable C1E -> system runs fine
 - change CPU to AMD Phenom II X6 Processor -> system runs fine


$ cat /sys/devices/system/cpu/modalias 
cpu:type:x86,ven0002fam0015mod0002:
feature:,0000,0001,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,
000D,000E,000F,0010,0011,0013,0017,0018,0019,001A,001C,0020,0021,0022,
0023,0024,0025,0026,0027,0028,0029,002B,002C,002D,002E,002F,0030,0031,
0034,0036,0037,0038,0039,003A,003B,003D,0064,0068,006E,0070,0071,0074,
0075,0078,007A,007C,0080,0081,0083,0089,008C,008D,0093,0094,0097,0099,
009A,009B,009C,009D,00C0,00C1,00C2,00C3,00C4,00C5,00C6,00C7,00C8,00C9,
00CA,00CB,00CC,00CD,00CF,00D0,00D1,00D3,00D5,00D6,00D7,00D8,00E1,00E2,
00E8,0105,0106,0107,0108,0109,010A,010B,010C,010D,010E,010F,0123

$ cat /proc/cpuinfo 
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 21
model           : 2
model name      : AMD FX(tm)-8350 Eight-Core Processor
stepping        : 0
microcode       : 0x6000832
cpu MHz         : 1400.000
cache size      : 2048 KB
physical id     : 0
siblings        : 8
core id         : 0
cpu cores       : 4
apicid          : 16
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc
extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1
sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic
cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt
lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb arat cpb
hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decodeassists pausefilter pfthreshold vmmcall bmi1
bugs            : fxsave_leak sysret_ss_attrs
bogomips        : 8036.70
TLB size        : 1536 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro
<snip>

Any ideas?

Thanks
 -- Christoph




^ permalink raw reply	[flat|nested] 15+ messages in thread
end of thread, other threads:[~2015-07-13  7:32 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-06-14  3:13 lockup when C1E and high-resolution timers enabled Daniel J Blueman
2015-06-14  4:39 ` Christoph Fritz
2015-06-14  7:54   ` Daniel J Blueman
2015-06-14 14:49     ` Christoph Fritz
2015-06-14 15:24       ` Daniel J Blueman
2015-06-14 23:38         ` Christoph Fritz
2015-06-14 16:47   ` Borislav Petkov
2015-06-14 23:05     ` Christoph Fritz
2015-06-15  7:54       ` Borislav Petkov
2015-06-15  8:01         ` Christoph Fritz
2015-06-15  8:10           ` Borislav Petkov
2015-07-13  7:32             ` Christoph Fritz
  -- strict thread matches above, loose matches on Subject: below --
2015-06-13 19:53 Christoph Fritz
2015-06-13 20:19 ` Heinz Diehl
2015-06-13 20:58   ` Christoph Fritz

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