Hi all!
I was dealing with one router and faced with the fact that I did not see
hypertrading after installing OpenBSD 7.0. I came across an email
https://www.mail-archive.com/[email protected]/msg99141.html,
where I read hypertrading was disabled for Intel processors running on
OpenBSD/amd64 and that it can be enabled via hw.smt. I did so, but I don't
see it making a difference. How do you make sure it's on and used?
router1$ dmesg | grep ^cpu
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel(R) Xeon(R) CPU E5430 @ 2.66GHz, 2667.11 MHz, 06-17-06
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,LONG,LAHF,PERF,SENSOR,MELTDOWN
cpu0: 6MB 64b/line 16-way L2 cache
cpu0: smt 0, core 0, package 0
cpu0: mwait min=64, max=64, C-substates=0.2.2.2, IBE
router1$ sysctl hw
hw.machine=amd64
hw.model=Intel(R) Xeon(R) CPU E5430 @ 2.66GHz
hw.ncpu=1
hw.byteorder=1234
hw.pagesize=4096
hw.disknames=sd0:fa871ac66d86823a
hw.diskcount=1
hw.sensors.acpitz0.temp0=8.30 degC (zone temperature)
hw.sensors.cpu0.temp0=50.00 degC
hw.sensors.ciss0.drive0=online (sd0), OK
hw.cpuspeed=2667
hw.setperf=100
hw.vendor=HP
hw.product=ProLiant DL360 G5
hw.serialno=CZJ815A9BY
hw.uuid=34353739-3234-435a-4a38-313541394259
hw.physmem=4276432896
hw.usermem=4276416512
hw.ncpufound=1
hw.allowpowerdown=1
hw.perfpolicy=manual
hw.smt=1
hw.ncpuonline=1
router1$ uname -a
OpenBSD router1 7.0 GENERIC#224 amd64
router1$
dmesg.boot is here: https://pastebin.com/G24A7Jbw
According to the Intel CPU E5430 specification, it has 4 cores.
Before updating the router, I noticed that it worked without hypertrading
on OpenBSD 6.7/amd64 with a good load:
->% uptime
11:03 AM up 209 days, 4:25, 3 users, load averages: 3.40, 3.17, 3.02
I didn’t see which process was eating the CPU in htop, but the average
load was scary. Suggested that HT disabled might be the cause, so I decided
to update the OS and enable HT.
The following services worked before the updates: pf / CARP / ospfd /
zabbix-proxy / snmpd.
Thank you for any suggestions.
Regards,
Den
