Hi all,
I have Go tip fetch and build every once or more in a week on my local
development (office environment).
For local testing, I have VirtualBox setup with all third parties.
The host machine is macOS Catalina version 10.15.3,
Model Identifier: MacBookPro14,1
Processor Name: Dual-Core Intel Core i5
Processor Speed: 2,3 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Hyper-Threading Technology: Enabled
Memory: 8 GB
Boot ROM Version: 204.0.0.0.0
The guest machine is Arch Linux on VirtualBox 6.1.4 r136177 (Qt5.6.3),
5.5.7-arch1-1 #1 SMP PREEMPT Sat, 29 Feb 2020 19:06:02 +0000 x86_64 GNU/Linux
HPET: disabled
CPUProfile: host
Chipset: piix3
Firmware: BIOS
Number of CPUs: 1
PAE: disabled
Long Mode: enabled
Triple Fault Reset: disabled
APIC: enabled
X2APIC: enabled
Nested VT-x/AMD-V: disabled
ACPI: enabled
IOAPIC: enabled
BIOS APIC mode: APIC
Time offset: 0ms
RTC: local time
Hardware Virtualisation: enabled
Nested Paging: enabled
Large Pages: enabled
VT-x VPID: enabled
VT-x Unrestricted Exec.: enabled
Paravirt. Provider: None
Effective Paravirt. Prov.: None
At the guest, we have five Go services that depends on Nats, Redis, and MySQL.
The problem is at random time one or two random service(s) will run with high
CPU usage.
There is no issue when building with Go 1.14.
I have add "net/http/pprof" to each of them and try to run the profiling tools
from host to service that run with high CPU, but it can't reach the service
with the following error,
Fetching profile over HTTP from
http://192.168.56.10:6079/debug/pprof/profile
192.168.56.10:6079/debug/pprof/profile: Get
"http://192.168.56.10:6079/debug/pprof/profile": net/http: timeout awaiting
response headers
failed to fetch any source profiles
My question is any one have idea how to debug this so I can provide more
detailed report?
Thank you in advance.
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