* [ISSUE] Entropy very different on physical vs virtual machines
@ 2021-03-16 14:36 bcookatpcsd
2022-05-09 2:13 ` github-actions
2022-05-24 2:12 ` [ISSUE] [CLOSED] " github-actions
0 siblings, 2 replies; 3+ messages in thread
From: bcookatpcsd @ 2021-03-16 14:36 UTC (permalink / raw)
To: ml
[-- Attachment #1: Type: text/plain, Size: 2799 bytes --]
New issue by bcookatpcsd on void-packages repository
https://github.com/void-linux/void-packages/issues/29510
Description:
void running in esxi w/ open-vm-tools
`Linux Void69 5.10.23_1 #1 SMP 1615515203 x86_64 GNU/Linux
[I] bcook@Void69 ~> cat /proc/sys/kernel/random/entropy_avail
3420
`
` cat /etc/sv/vmtoolsd/run
#!/bin/sh
set -e
/sbin/modprobe vmw_vsock_vmci_transport
exec vmtoolsd
`
void running on bare metal machine (not running intended services yet)
`[I] root@VoidClinton ~# uname -a
Linux VoidClinton 5.10.23_1 #1 SMP 1615515203 x86_64 GNU/Linux
[I] root@VoidClinton ~# cat /proc/sys/kernel/random/entropy_avail
7
`
another void physical machine running docker and three containers (dns processes) AND chrony
`[I] bcook@Void63 ~> uname -a
Linux Void63 5.10.23_1 #1 SMP 1615515203 x86_64 GNU/Linux
[I] bcook@Void63 ~> cat /proc/sys/kernel/random/entropy_avail
2869
`
`[I] bcook@Void63 ~ [1]> chronyc sources
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^+ time1.google.com 1 10 377 823 -1211us[-1292us] +/- 12ms
^* time4.google.com 1 10 377 612 -996us[-1078us] +/- 9027us
^+ time3.google.com 1 10 377 768 -169us[ -251us] +/- 8996us
^+ time2.google.com 1 10 377 756 +151us[ +69us] +/- 12ms
^+ time.cloudflare.com 3 10 377 256 -634us[ -634us] +/- 7338us
^+ time.cloudflare.com 3 10 377 292 -218us[ -218us] +/- 7610us
`
Where is the entropy coming from? should I run rng-tools or haveged..
What about irqbalance? github shows work still being done there..
via glances:

[I] bcook@Void63 ~> cat /proc/interrupts | grep LOC
LOC: 7904516 7711579 10060743 7701411 Local timer interrupts
[I] bcook@Void63 ~> uptime
10:30:21 up 18:27, 0 users, load average: 0.13, 0.15, 0.06
I thought LOC had to do with proper interrupt usage (affinity being correctly used) vs an actual "interrupted performance" counter..

the local eno1 interface seems pinned to CPU2, hence why the LOC counters are higher for CPU2..
rng-tools,haveged,irqbalance.. are those still used in modern systems? Are those not in the kernel? Are they recommended in 2021?
I also have TZ='America\New_York' set in /etc/profile..
https://blog.packagecloud.io/eng/2017/02/21/set-environment-variable-save-thousands-of-system-calls/
Thanks in advance..
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Entropy very different on physical vs virtual machines
2021-03-16 14:36 [ISSUE] Entropy very different on physical vs virtual machines bcookatpcsd
@ 2022-05-09 2:13 ` github-actions
2022-05-24 2:12 ` [ISSUE] [CLOSED] " github-actions
1 sibling, 0 replies; 3+ messages in thread
From: github-actions @ 2022-05-09 2:13 UTC (permalink / raw)
To: ml
[-- Attachment #1: Type: text/plain, Size: 293 bytes --]
New comment by github-actions[bot] on void-packages repository
https://github.com/void-linux/void-packages/issues/29510#issuecomment-1120562404
Comment:
Issues become stale 90 days after last activity and are closed 14 days after that. If this issue is still relevant bump it or assign it.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [ISSUE] [CLOSED] Entropy very different on physical vs virtual machines
2021-03-16 14:36 [ISSUE] Entropy very different on physical vs virtual machines bcookatpcsd
2022-05-09 2:13 ` github-actions
@ 2022-05-24 2:12 ` github-actions
1 sibling, 0 replies; 3+ messages in thread
From: github-actions @ 2022-05-24 2:12 UTC (permalink / raw)
To: ml
[-- Attachment #1: Type: text/plain, Size: 2802 bytes --]
Closed issue by bcookatpcsd on void-packages repository
https://github.com/void-linux/void-packages/issues/29510
Description:
void running in esxi w/ open-vm-tools
`Linux Void69 5.10.23_1 #1 SMP 1615515203 x86_64 GNU/Linux
[I] bcook@Void69 ~> cat /proc/sys/kernel/random/entropy_avail
3420
`
` cat /etc/sv/vmtoolsd/run
#!/bin/sh
set -e
/sbin/modprobe vmw_vsock_vmci_transport
exec vmtoolsd
`
void running on bare metal machine (not running intended services yet)
`[I] root@VoidClinton ~# uname -a
Linux VoidClinton 5.10.23_1 #1 SMP 1615515203 x86_64 GNU/Linux
[I] root@VoidClinton ~# cat /proc/sys/kernel/random/entropy_avail
7
`
another void physical machine running docker and three containers (dns processes) AND chrony
`[I] bcook@Void63 ~> uname -a
Linux Void63 5.10.23_1 #1 SMP 1615515203 x86_64 GNU/Linux
[I] bcook@Void63 ~> cat /proc/sys/kernel/random/entropy_avail
2869
`
`[I] bcook@Void63 ~ [1]> chronyc sources
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^+ time1.google.com 1 10 377 823 -1211us[-1292us] +/- 12ms
^* time4.google.com 1 10 377 612 -996us[-1078us] +/- 9027us
^+ time3.google.com 1 10 377 768 -169us[ -251us] +/- 8996us
^+ time2.google.com 1 10 377 756 +151us[ +69us] +/- 12ms
^+ time.cloudflare.com 3 10 377 256 -634us[ -634us] +/- 7338us
^+ time.cloudflare.com 3 10 377 292 -218us[ -218us] +/- 7610us
`
Where is the entropy coming from? should I run rng-tools or haveged..
What about irqbalance? github shows work still being done there..
via glances:

[I] bcook@Void63 ~> cat /proc/interrupts | grep LOC
LOC: 7904516 7711579 10060743 7701411 Local timer interrupts
[I] bcook@Void63 ~> uptime
10:30:21 up 18:27, 0 users, load average: 0.13, 0.15, 0.06
I thought LOC had to do with proper interrupt usage (affinity being correctly used) vs an actual "interrupted performance" counter..

the local eno1 interface seems pinned to CPU2, hence why the LOC counters are higher for CPU2..
rng-tools,haveged,irqbalance.. are those still used in modern systems? Are those not in the kernel? Are they recommended in 2021?
I also have TZ='America\New_York' set in /etc/profile..
https://blog.packagecloud.io/eng/2017/02/21/set-environment-variable-save-thousands-of-system-calls/
Thanks in advance..
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-03-16 14:36 [ISSUE] Entropy very different on physical vs virtual machines bcookatpcsd
2022-05-09 2:13 ` github-actions
2022-05-24 2:12 ` [ISSUE] [CLOSED] " github-actions
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