Skip to content

Instantly share code, notes, and snippets.

@iximiuz

iximiuz/shiki-perf-degradation-repro.mjs

Created December 8, 2025 22:05
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save iximiuz/4f1c8bffd93eab5264336fbdc5d43ff0 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save iximiuz/4f1c8bffd93eab5264336fbdc5d43ff0 to your computer and use it in GitHub Desktop.
Download ZIP
Raw
shiki-perf-degradation-repro.mjs
import { codeToHast } from 'shiki';
const inputSlow = `
TIME UPID STACK TRACE ID STACK TRACE COUNT NAMESPACE POD CONTAINER CMDLINE NODE
2025-10-22 15:58:21.425844934 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 6777 runtime.goexit.abi0;main.main.gowrap2;github.com/amitschendel/curing/pkg/client.(*CommandPuller).Run;github.com/amitschendel/curing/pkg/client.(*CommandPuller).connectReadAndProcess;github.com/amitschendel/curing/pkg/client.(*CommandPuller).connect;net.DialTimeout;net.(*Dialer).DialContext;net.(*sysDialer).dialParallel;net.(*sysDialer).dialSerial;net.(*sysDialer).dialSingle;net.(*sysDialer).dialTCP;net.(*sysDialer).doDialTCPProto;net.internetSocket;net.socket;net.(*netFD).dial;net.(*netFD).connect;syscall.Connect;syscall.connect;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] kretprobe_trampoline;[k] trampoline_handler;[k] __kretprobe_trampoline_handler;[k] _raw_spin_unlock_irqrestore 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 15:59:51.590700167 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 7215 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;net.(*conn).Write;net.(*netFD).Write;internal/poll.(*FD).Write;syscall.write;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] __x64_sys_write;[k] ksys_write;[k] vfs_write;[k] new_sync_write;[k] sock_write_iter;[k] __sock_sendmsg;[k] inet_sendmsg;[k] udp_sendmsg;[k] udp_send_skb;[k] ip_send_skb;[k] ip_output;[k] ip_finish_output;[k] __ip_finish_output;[k] ip_finish_output2;[k] neigh_resolve_output;[k] dev_queue_xmit;[k] __dev_queue_xmit;[k] dev_hard_start_xmit;[k] xmit_one.constprop.0;[k] dev_queue_xmit_nit;[k] packet_rcv;[k] bpf_prog_332f10ee454943d0_ig_trace_dns;[k] bpf_skb_event_output;[k] bpf_event_output;[k] perf_event_output;[k] perf_output_end;[k] irq_work_queue;[k] __irq_work_queue_local;[k] arch_irq_work_raise;[k] native_apic_msr_write 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:01:21.71209691 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 7585 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.(*Resolver).dial;net.(*Dialer).DialContext;net.(*sysDialer).dialParallel;net.(*sysDialer).dialSerial;net.(*sysDialer).dialSingle;net.(*sysDialer).dialUDP;net.internetSocket;net.socket;net.(*netFD).dial;net.(*netFD).connect;syscall.Connect;syscall.connect;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] kretprobe_trampoline;[k] trampoline_handler;[k] __kretprobe_trampoline_handler;[k] _raw_spin_unlock_irqrestore 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:01:21.71209691 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 7612 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;runtime.chansend1;runtime.chansend;runtime.send;runtime.systemstack.abi0;runtime.send.goready.func1;runtime.ready;runtime.runqput 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:02:51.793386797 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 7904 ;[k] ret_from_fork;[k] io_wqe_worker 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:02:51.793386797 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 7906 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;runtime.makeslice;runtime.mallocgc;runtime.memclrNoHeapPointers 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:02:51.793386797 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 7950 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;net.(*conn).Read;net.(*netFD).Read;internal/poll.(*FD).Read;syscall.read;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] kretprobe_trampoline;[k] trampoline_handler;[k] __kretprobe_trampoline_handler;[k] _raw_spin_unlock_irqrestore 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:04:21.864827833 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 8255 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;net.(*conn).Write;net.(*netFD).Write;internal/poll.(*FD).Write;syscall.write;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] __x64_sys_write;[k] ksys_write;[k] vfs_write;[k] new_sync_write;[k] sock_write_iter;[k] __sock_sendmsg;[k] inet_sendmsg;[k] udp_sendmsg;[k] udp_send_skb;[k] ip_send_skb;[k] ip_output;[k] ip_finish_output;[k] __ip_finish_output;[k] ip_finish_output2;[k] __local_bh_enable_ip;[k] do_softirq;[k] do_softirq_own_stack;[k] asm_call_sysvec_on_stack;[k] __softirqentry_text_start;[k] net_rx_action;[k] process_backlog;[k] __netif_receive_skb;[k] __netif_receive_skb_one_core;[k] __netif_receive_skb_core.constprop.0;[k] br_handle_frame;[k] br_nf_pre_routing;[k] br_nf_pre_routing_finish;[k] br_nf_hook_thresh;[k] br_handle_frame_finish;[k] br_pass_frame_up;[k] netif_receive_skb;[k] __netif_receive_skb;[k] __netif_receive_skb_one_core;[k] ip_rcv;[k] nf_hook_slow;[k] ip_sabotage_in;[k] ip_rcv_finish;[k] ip_forward;[k] ip_forward_finish;[k] ip_output;[k] ip_finish_output;[k] __ip_finish_output;[k] ip_finish_output2;[k] neigh_hh_output;[k] dev_queue_xmit;[k] __dev_queue_xmit;[k] dev_hard_start_xmit;[k] xmit_one.constprop.0;[k] vxlan_xmit;[k] vxlan_xmit_one;[k] vxlan_get_route 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:07:22.072140627 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 8864 0x000000c0002c8060;runtime.send;runtime.systemstack.abi0;runtime.send.goready.func1;runtime.ready;runtime.wakep;runtime.startm;runtime.notewakeup;runtime.mstart.abi0;runtime.mstart0;runtime.mstart1;runtime.sysmon;runtime.nanotime1.abi0;[k] asm_sysvec_apic_timer_interrupt;[k] sysvec_apic_timer_interrupt;[k] irq_exit_rcu;[k] do_softirq_own_stack;[k] asm_call_sysvec_on_stack;[k] __softirqentry_text_start;[k] rcu_core_si;[k] rcu_core;[k] note_gp_changes;[k] _raw_spin_unlock_irqrestore 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:10:22.30384519 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 9729 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;net.(*conn).Read;net.(*netFD).Read;internal/poll.(*FD).Read;syscall.read;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] __x64_sys_read;[k] ksys_read;[k] vfs_read;[k] new_sync_read;[k] sock_read_iter;[k] sock_recvmsg;[k] inet_recvmsg;[k] udp_recvmsg;[k] __skb_recv_udp;[k] __skb_try_recv_from_queue 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:10:22.30384519 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 9756 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.(*Resolver).dial;net.(*Dialer).DialContext;net.(*sysDialer).dialParallel;net.(*sysDialer).dialSerial;net.(*sysDialer).dialSingle;net.(*sysDialer).dialUDP;net.internetSocket;net.socket;net.sysSocket;syscall.Socket;syscall.socket;syscall.RawSyscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] do_syscall_64;[k] __x64_sys_socket;[k] __sys_socket;[k] kretprobe_trampoline;[k] sock_alloc;[k] new_inode_pseudo;[k] alloc_inode;[k] inode_init_always 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:10:22.30384519 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 9760 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.(*Resolver).dial;net.(*Dialer).DialContext;net.(*sysDialer).dialParallel;net.(*sysDialer).dialSerial;net.(*sysDialer).dialSingle;net.(*sysDialer).dialUDP;net.internetSocket;net.socket;net.(*netFD).dial;net.(*netFD).connect;syscall.Connect;syscall.connect;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] kretprobe_trampoline;[k] trampoline_handler;[k] __kretprobe_trampoline_handler;[k] _raw_spin_unlock_irqrestore 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:11:52.406689359 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 10036 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;net.(*conn).Read;net.(*netFD).Read;internal/poll.(*FD).Read;syscall.read;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] kretprobe_trampoline;[k] trampoline_handler;[k] __kretprobe_trampoline_handler;[k] _raw_spin_unlock_irqrestore 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:11:52.406689359 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 10049 runtime.goexit.abi0;main.main.gowrap2;github.com/amitschendel/curing/pkg/client.(*CommandPuller).Run;github.com/amitschendel/curing/pkg/client.(*CommandPuller).connectReadAndProcess;github.com/amitschendel/curing/pkg/client.(*CommandPuller).processCommands;github.com/amitschendel/curing/pkg/client.(*CommandPuller).sendGobRequest;encoding/gob.(*Encoder).Encode;encoding/gob.(*Encoder).EncodeValue;encoding/gob.(*Encoder).sendTypeDescriptor;encoding/gob.(*Encoder).sendType;encoding/gob.(*Encoder).sendActualType;encoding/gob.(*Encoder).sendType;encoding/gob.(*Encoder).sendActualType;encoding/gob.(*Encoder).writeMessage;github.com/amitschendel/curing/pkg/client.(*NetworkRWer).Write;net.(*conn).Write;net.(*netFD).Write;internal/poll.(*FD).Write;syscall.write;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] do_syscall_64;[k] syscall_enter_from_user_mode;[k] syscall_trace_enter.constprop.0;[k] __traceiter_sys_enter;[k] __bpf_trace_sys_enter;[k] bpf_trace_run2;[k] bpf_prog_0f882ec0ca7e929e_ig_seccomp_e;[k] __htab_map_lookup_elem;[k] lookup_nulls_elem_raw 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:11:52.406689359 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 10085 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;net.(*conn).Write;net.(*netFD).Write;internal/poll.(*FD).Write;syscall.write;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] kretprobe_trampoline;[k] __x64_sys_write;[k] ksys_write;[k] vfs_write;[k] new_sync_write;[k] sock_write_iter;[k] __sock_sendmsg;[k] inet_sendmsg;[k] udp_sendmsg;[k] udp_send_skb;[k] ip_send_skb;[k] ip_output;[k] ip_finish_output;[k] __ip_finish_output;[k] ip_finish_output2;[k] __local_bh_enable_ip;[k] do_softirq;[k] do_softirq_own_stack;[k] asm_call_sysvec_on_stack;[k] __softirqentry_text_start;[k] net_rx_action;[k] process_backlog;[k] __netif_receive_skb;[k] __netif_receive_skb_one_core;[k] __netif_receive_skb_core.constprop.0;[k] br_handle_frame;[k] br_nf_pre_routing;[k] setup_pre_routing;[k] sock_wfree;[k] sock_def_write_space;[k] __wake_up_sync_key;[k] __wake_up_common_lock;[k] _raw_spin_unlock_irqrestore 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:13:22.516908876 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 10400 runtime.goexit.abi0;github.com/iceber/iouring-go.New.gowrap1;github.com/iceber/iouring-go.(*IOURing).run;github.com/iceber/iouring-go.(*IOURing).getCQEvent;runtime.selectgo;runtime.gopark;runtime.mcall;runtime.park_m;runtime.schedule;runtime.findRunnable;runtime.stealWork;runtime.(*timers).check;runtime.nanotime1.abi0;[m] [vdso] + 0x7ffd5a3e6a09;[k] entry_SYSCALL_64_after_hwframe;[k] do_syscall_64;[k] syscall_enter_from_user_mode;[k] syscall_trace_enter.constprop.0;[k] __traceiter_sys_enter;[k] __bpf_trace_sys_enter;[k] bpf_trace_run2 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
2025-10-22 16:14:22.570940379 +0000 UTC 00000005-0000-7c8c-0000-0000000367e6 10674 runtime.goexit.abi0;net.(*Resolver).goLookupIPCNAMEOrder.func3.gowrap1;net.(*Resolver).goLookupIPCNAMEOrder.func3.1;net.(*Resolver).tryOneName;net.(*Resolver).exchange;net.dnsPacketRoundTrip;net.(*conn).Write;net.(*netFD).Write;internal/poll.(*FD).Write;syscall.write;syscall.Syscall;internal/runtime/syscall.Syscall6;[k] entry_SYSCALL_64_after_hwframe;[k] do_syscall_64;[k] syscall_exit_to_user_mode;[k] __traceiter_sys_exit;[k] __bpf_trace_sys_exit;[k] bpf_trace_run2;[k] bpf_prog_a4331b93d3bc1065_ig_cap_sys_exit;[k] htab_map_delete_elem 1 click click/curing-client-7c6d4bbfb8-rbkgv client ./client node-01
`;
const inputFast = `import com.sun.package;`;
const hast = await codeToHast(inputSlow, {
lang: 'java',
theme: 'slack-dark',
});
console.log(hast);
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment