Both restbase2002.codfw.wmnet and restbase1015.codfw.wmnet only show 16 cpus via /proc/cpuinfo. Since these should be 16 core machines, I am assuming that hyperthreading is disabled in the BIOS.
Description
Description
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Open | None | T156140 Lots of hosts with hyperthreading disabled | |||
| Resolved | Joe | T162735 Hyperthreading disabled on restbase2002.codfw.wmnet & restbase1015.codfw.wmnet |
Event Timeline
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@MoritzMuehlenhoff I know you are planning to bounce these machines as part of a kernel upgrade, any chance you could flip this bit in the BIOS while they are down?
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Mentioned in SAL (#wikimedia-operations) [2017-07-25T14:23:32Z] <_joe_> shutting down restbase2002, T162735
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Mentioned in SAL (#wikimedia-operations) [2017-07-25T14:29:52Z] <_joe_> enabled hyperthreading on restbase2002.codfw.wmnet T162735, rebooting the server
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Mentioned in SAL (#wikimedia-operations) [2017-07-25T14:36:42Z] <urandom> draining restbase1015.eqiad.wmnet T162735
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Mentioned in SAL (#wikimedia-operations) [2017-07-25T14:52:31Z] <_joe_> shutting down restbase1015, T162735
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Mentioned in SAL (#wikimedia-operations) [2017-07-25T14:58:29Z] <_joe_> enabled hyperthreading on restbase1015.eqiad.wmnet T162735, rebooting the server