Brendan Gregg
NOVEMBER 29, 2017
Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. It's an exciting development in cloud computing: hardware virtualization is now fast. Virtualized in Hardware**: Hardware support for virtualization, and near bare-metal speeds.
SQL Performance
APRIL 8, 2019
Back on December 5, 2017, Microsoft announced that they were using AMD EPYC 7551 processors in their storage-optimized Lv2-Series virtual machines. Both of these Intel processors are special bespoke models that are not in the Intel ARK database. The key specifications for the Lsv2 series virtual machines are shown in Table 1.
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Brendan Gregg
SEPTEMBER 25, 2021
These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you _time_ time?
Brendan Gregg
NOVEMBER 28, 2017
Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. It's an exciting development in cloud computing: hardware virtualization is now fast. Virtualized in Hardware**: Hardware support for virtualization, and near bare-metal speeds.
SQL Performance
FEBRUARY 1, 2022
The transaction log contains virtual log files, which contain log blocks, which store the actual log records. Virtual Log Files. The transaction log is split up into sections called virtual log files , commonly just called VLFs. Due to this problem, in SQL Server 2014 the algorithm changed for auto-growth of the log file.
Brendan Gregg
SEPTEMBER 25, 2021
These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you time time?
Brendan Gregg
SEPTEMBER 25, 2021
These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you _time_ time?
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