Below is the output from perf top - it happens during reload (all threads on an old process spike and use 100% cpu, processing lua) and after 15-30 seconds old process exits. It is probably a different bug, because it happens on an old process and I have no idea how it could affect the new process. Maybe through peers protocol? Still both issues are related to lua scripts (on my initial email in low_cpu_thread.txt it hung on lua script responsible for removing http headers on hlua_http_get_headers function).
Samples: 770K of event 'cycles:ppp', Event count (approx.): 336817908209 Overhead Shared Object Symbol 36.39% haproxy [.] process_runnable_tasks 34.82% haproxy [.] run_tasks_from_lists 10.04% haproxy [.] __task_wakeup 5.63% libc-2.27.so [.] __memset_avx2_erms 1.87% haproxy [.] hlua_action 0.79% haproxy [.] hlua_ctx_init 0.77% haproxy [.] stream_release_buffers 0.58% libcrypto.so.1.1 [.] rsaz_1024_sqr_avx2 0.56% haproxy [.] stream_int_notify 0.49% haproxy [.] task_run_applet 0.42% haproxy [.] hlua_sample_fetch_wrapper 0.38% haproxy [.] spoe_handle_appctx 0.38% [kernel] [k] do_syscall_64 0.37% haproxy [.] eb32sc_insert 0.32% [vdso] [.] __vdso_clock_gettime 0.27% haproxy [.] hlua_ctx_destroy 0.22% haproxy [.] stktable_get_entry 0.20% haproxy [.] process_stream 0.19% [kernel] [k] audit_filter_rules.constprop.13 0.17% haproxy [.] si_applet_wake_cb 0.14% libcrypto.so.1.1 [.] rsaz_1024_mul_avx2 wt., 16 mar 2021 o 12:00 Maciej Zdeb <mac...@zdeb.pl> napisał(a): > Sure, patch from Christopher attached. :) > > wt., 16 mar 2021 o 10:58 Willy Tarreau <w...@1wt.eu> napisał(a): > >> Hi Maciej, >> >> On Tue, Mar 16, 2021 at 10:55:11AM +0100, Maciej Zdeb wrote: >> > Hi, >> > >> > I'm returning with bad news, the patch did not help and the issue >> occurred >> > today (on patched 2.2.10). It is definitely related to reloads, however >> it >> > is very rare issue it worked flawlessly the whole week. >> >> OK. Just as a reminder (because I can't find it here), can you please >> remind us what this patch was ? >> >> Thanks, >> Willy >> >
