Note: The job is a remote job and is open to candidates in USA. SPECTRAFORCE is seeking an RH Enterprise Linux 10 Consultant for a three-month engagement. The role focuses on configuring and tuning Red Hat Enterprise Linux networking systems to support low-latency, high-frequency network trading, including optimizing network cards, interrupts, kernel parameters, and packet processing.
Responsibilities
- Configure 'tuned' for low latency
- Query and maximize ethernet card transmit/receive ring buffers using ethtool and configuration tools
- Disabling interrupt coalescing on network cards to minimize latency
- Balancing network interrupts over cpu cores, PCIe busses and cpu sockets
- Use 'tc' (traffic control) to query retransmitted network packets
- Increase ethernet txqueuelen so packet retransmits are minimized
- Tune sysctl variables such as net.core.{rmem_max,rmem_default,netdev_max_backlog,netdev_budget,netdev_budget_usecs}
- Monitor /proc/net/softnet_stat to see if the kernel is running out of time to process received network packets
Skills
- Configure 'tuned' for low latency
- Query and maximize ethernet card transmit/receive ring buffers using ethtool and configuration tools
- Disabling interrupt coalescing on network cards to minimize latency
- Balancing network interrupts over cpu cores, PCIe busses and cpu sockets
- Use 'tc' (traffic control) to query retransmitted network packets
- Increase ethernet txqueuelen so packet retransmits are minimized
- Tune sysctl variables such as net.core.{rmem_max,rmem_default,netdev_max_backlog,netdev_budget,netdev_budget_usecs}
- Monitor /proc/net/softnet_stat to see if the kernel is running out of time to process received network packets
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