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bugzilla: 23734
增加启动参数关掉 ARM64 LSE
CSP 分布式场景性能问题分析。
1620 的 LSE 原子操作在不同场景下,性能有好有坏,提供一个 cmdline 接口,让使用者可以选择开关 LSE, 不用重编内核。
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各分支合入情况如下所示:
分支 | commit | tag |
---|---|---|
openEuler-1.0-LTS | 01c4459db8d8f47f0604486c2f1f094ac1a48c74 | tags/4.19.90-2001.1.0~2771 |
openEuler-1.0-LTS | d5f326978b85f2ecf6b4a883fbaebae03f826d27 | tags/4.19.90-2001.1.0~2298 |
OLK-6.6 test log:
* Before patch:
processor : 15
BogoMIPS : 125.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part : 0xd0c
CPU revision : 1
root@localhost:~# uname -a
Linux localhost 6.6.0+ #8 SMP Mon Jan 15 17:50:52 CST 2024 aarch64 GNU/Linux
root@localhost:~# cat /proc/cmdline
root=/dev/root rw rootfstype=9p rootflags=trans=virtio console=ttyAMA0 kgdboc=ttyAMA0 kdb.cmd_enable=1 earlyprintk=serial oops=panic nmi_watchdog=nopanic panic_on_warn=0 ftrace_dump_on_oops=orig_cpu rodata=n vsyscall=native net.ifnames=0 biosdevname=0 nohz=off nokaslr slub_debug irqchip.gicv3_pseudo_nmi=0 disable_sdei_nmi_watchdog hardlockup_enable=on pmu_nmi_enable hardlockup_cpu_freq=auto selinux=0 mm.use_clearpage_stnp=1 lse=off
root@localhost:~#
* After patch:
processor : 15
BogoMIPS : 125.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part : 0xd0c
CPU revision : 1
root@localhost:~# uname -a
Linux localhost 6.6.0+ #8 SMP Mon Jan 15 17:50:52 CST 2024 aarch64 GNU/Linux
root@localhost:~# cat /proc/cmdline
root=/dev/root rw rootfstype=9p rootflags=trans=virtio console=ttyAMA0 kgdboc=ttyAMA0 kdb.cmd_enable=1 earlyprintk=serial oops=panic nmi_watchdog=nopanic panic_on_warn=0 ftrace_dump_on_oops=orig_cpu rodata=n vsyscall=native net.ifnames=0 biosdevname=0 nohz=off nokaslr slub_debug irqchip.gicv3_pseudo_nmi=0 disable_sdei_nmi_watchdog hardlockup_enable=on pmu_nmi_enable hardlockup_cpu_freq=auto selinux=0 mm.use_clearpage_stnp=1 lse=off arm64.nolse
root@localhost:~#
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