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Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Low: glibc security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2020:3861
with the patch "https://sourceware.org/git/?p=glibc.git;h=27d3ce1467990f89126e228559dec8f84b96c60e", the ebizzy benchmark has a regression.
test with glibc-2.17-317, which has include the commit, the data of ebizzy is:
# ./ebizzy -t 1 -S 10
4561 records/s 4561
real 10.00 s
user 10.00 s
sys 0.00 s
then revert the commit from glibc-2.17-317, rebuild glibc, the data of ebizzy is:
# ./ebizzy -t 1 -S 10
7188 records/s 7188
real 10.00 s
user 10.00 s
sys 0.00 s
cpuinfo:
lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 2
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 45
Model name: Intel(R) Xeon(R) CPU E5-2430 0 @ 2.20GHz
Stepping: 7
CPU MHz: 2194.710
BogoMIPS: 4389.42
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 15360K
NUMA node0 CPU(s): 0-7
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl cpuid tsc_known_freq pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm pti ibrs ibpb tsc_adjust xsaveopt
(In reply to xuchunmei from comment #27)
> with the patch
> "https://sourceware.org/git/?p=glibc.git;
> h=27d3ce1467990f89126e228559dec8f84b96c60e", the ebizzy benchmark has a
> regression.
Would you please file a new bug for this? Thanks.