https://nbai.ru/en/ Engineering writeups: Linux kernel tuning, SRE post-mortems, Rust, eBPF and autonomous AI agents. en-US hello@nbai.ru (Den) hello@nbai.ru (Den) https://nbai.ru/en/posts/zero-copy-tensor-buffer-sharing-heterogeneous-clusters/ https://nbai.ru/en/posts/zero-copy-tensor-buffer-sharing-heterogeneous-clusters/ Wed, 04 Nov 2026 22:23:46 +0300 In-depth engineering analysis: Zero-copy tensor buffer sharing in heterogeneous local clusters via DMA-BUF. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/model-eval-frameworks-why-synthetic-benchmarks-fail/ https://nbai.ru/en/posts/model-eval-frameworks-why-synthetic-benchmarks-fail/ Mon, 12 Oct 2026 08:28:37 +0300 In-depth engineering analysis: Model eval frameworks: why synthetic benchmarks fail to predict production agent reliability. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/debugging-cpu-throttling-cfs-scheduler-tracepoints/ https://nbai.ru/en/posts/debugging-cpu-throttling-cfs-scheduler-tracepoints/ Tue, 22 Sep 2026 23:42:35 +0300 In-depth engineering analysis: Debugging CPU throttling in CFS scheduler with kernel tracepoints. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/modern-http3-quic-transport-packet-pacing-congestion/ https://nbai.ru/en/posts/modern-http3-quic-transport-packet-pacing-congestion/ Tue, 08 Sep 2026 14:17:22 +0300 In-depth engineering analysis: Modern HTTP/3 and QUIC transport: UDP packet pacing and congestion control. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/designing-schema-first-tool-interfaces-ai-subagents/ https://nbai.ru/en/posts/designing-schema-first-tool-interfaces-ai-subagents/ Mon, 24 Aug 2026 01:59:54 +0300 In-depth engineering analysis: Designing schema-first tool interfaces for domain-specific AI subagents. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/zero-downtime-kernel-live-patching-kpatch-enterprise-linux/ https://nbai.ru/en/posts/zero-downtime-kernel-live-patching-kpatch-enterprise-linux/ Mon, 10 Aug 2026 17:47:46 +0300 In-depth engineering analysis: Zero-downtime kernel live patching with kpatch in enterprise Linux environments. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/tls-certificate-renewal-stale-http01-challenge-outage/ https://nbai.ru/en/posts/tls-certificate-renewal-stale-http01-challenge-outage/ Mon, 27 Jul 2026 09:28:58 +0300 In-depth engineering analysis: Post-mortem: TLS certificate renewal failure due to stale redirect in HTTP-01 challenge. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/building-self-correcting-agent-loops-ast-verification/ https://nbai.ru/en/posts/building-self-correcting-agent-loops-ast-verification/ Wed, 15 Jul 2026 21:54:47 +0300 In-depth engineering analysis: Building self-correcting agent loops with AST verification and compiler feedback. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/linux-kernel-memory-fragmentation-compact-memory-watermarks/ https://nbai.ru/en/posts/linux-kernel-memory-fragmentation-compact-memory-watermarks/ Fri, 03 Jul 2026 11:12:07 +0300 In-depth engineering analysis: Linux kernel memory fragmentation: compact_memory and memory watermark tuning. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/evaluating-local-code-generation-models-methodologies/ https://nbai.ru/en/posts/evaluating-local-code-generation-models-methodologies/ Mon, 22 Jun 2026 02:34:20 +0300 In-depth engineering analysis: Evaluating local code generation models: why synthetic benchmarks fail in real codebases. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/high-performance-ipc-posix-shm-vs-unix-domain-sockets/ https://nbai.ru/en/posts/high-performance-ipc-posix-shm-vs-unix-domain-sockets/ Wed, 10 Jun 2026 16:37:00 +0300 In-depth engineering analysis: High-performance IPC in Linux: POSIX shared memory vs Unix domain sockets. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/replacing-old-bash-orchestration-compiled-rust-tools/ https://nbai.ru/en/posts/replacing-old-bash-orchestration-compiled-rust-tools/ Fri, 29 May 2026 08:49:14 +0300 In-depth engineering analysis: Replacing old Bash orchestration scripts with compiled Rust tools. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/postgres-connection-leak-background-worker-pool/ https://nbai.ru/en/posts/postgres-connection-leak-background-worker-pool/ Mon, 18 May 2026 22:38:04 +0300 In-depth engineering analysis: Post-mortem: PostgreSQL connection leak in background worker pool during upstream timeouts. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/context-window-compression-strategies-long-running-agents/ https://nbai.ru/en/posts/context-window-compression-strategies-long-running-agents/ Wed, 06 May 2026 14:27:40 +0300 In-depth engineering analysis: Context window compression strategies for long-running AI agents. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/tcp-bbr-v3-implementation-details-pacing-rtt/ https://nbai.ru/en/posts/tcp-bbr-v3-implementation-details-pacing-rtt/ Wed, 15 Apr 2026 01:51:04 +0300 In-depth engineering analysis: TCP BBR v3 implementation details: packet pacing, inflight estimation and fair competition with CUBIC. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/multi-agent-orchestration-tool-streaming-token-latency/ https://nbai.ru/en/posts/multi-agent-orchestration-tool-streaming-token-latency/ Wed, 25 Mar 2026 18:16:05 +0300 In-depth engineering analysis: Multi-agent orchestration: tool call streaming and token latency optimization. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/rust-vs-c-kernel-modules-safety-ffi-boundaries/ https://nbai.ru/en/posts/rust-vs-c-kernel-modules-safety-ffi-boundaries/ Wed, 04 Mar 2026 09:36:00 +0300 In-depth engineering analysis: Rust vs C for Linux kernel modules: memory safety guarantees and FFI boundary overhead. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/upgrading-legacy-centos-7-to-rocky-linux-9/ https://nbai.ru/en/posts/upgrading-legacy-centos-7-to-rocky-linux-9/ Wed, 18 Feb 2026 23:37:01 +0300 In-depth engineering analysis: Upgrading legacy CentOS 7 workloads to modern Rocky Linux 9 without service interruptions. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/systemd-journald-log-drop-silent-monitoring-blindness/ https://nbai.ru/en/posts/systemd-journald-log-drop-silent-monitoring-blindness/ Wed, 28 Jan 2026 15:38:55 +0300 In-depth engineering analysis: Post-mortem: systemd-journald log drop causing silent monitoring blindness. Practical diagnostics, logs and production configuration. https://nbai.ru/en/posts/autonomous-ai-agents-deterministic-execution-loops/ https://nbai.ru/en/posts/autonomous-ai-agents-deterministic-execution-loops/ Wed, 14 Jan 2026 02:24:49 +0300 In-depth engineering analysis: Autonomous AI agents: deterministic execution loops and resilient error recovery. Practical diagnostics, logs and production configuration.