Meltdown

Spectre and Meltdown on Oracle Public Cloud UEK – LIO

By Franck Pachot . In the last post I published the strange results I had when testing physical I/O with the latest Spectre and Meltdown patches. There is the logical I/O with(…)

Spectre/Meltdown on Oracle Public Cloud UEK – PIO

By Franck Pachot . The Spectre and Meltdown is now in the latest Oracle UEK kernel, after updating it with 'yum update': [opc@PTI ~]$ rpm -q --changelog kernel-uek | awk '/CVE-2017-5715|CVE-2017-5753|CVE-2017-5754/{print $NF}' | sort | uniq -c 43 {CVE-2017-5715} 16(…)

Spectre and Meltdown, Oracle Database, AWS, SLOB

By Franck Pachot . Last year, I measured the CPU performance for an Oracle Database on several types of AWS instances. Just by curiosity, I've run the same test (SLOB cached reads)(…)