Date: Thu, 4 Mar 2021 23:40:56 +0200 From: Christos Chatzaras <chris@cretaforce.gr> To: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Filesystem operations slower in 13.0 than 12.2 Message-ID: <781116D7-B469-4C2B-8449-54CD83EEEF06@cretaforce.gr>
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Hello,
After finding slow filesystem operations with 13.0-BETA2 I did more =
tests.
All tests done with same hardware (Seagate ST4000NM0245 4TB HDD - 2 =
disks with RAID-1 using gmirror).
Filesystem mounted with noatime.
Command used:
/usr/bin/time -l portsnap extract
but similar differences I see with "/usr/bin/time -l rm -fr /usr/ports"
----------
FreeBSD 12.2p4=20
98.18 real 35.31 user 59.31 sys
49064 maximum resident set size
21 average shared memory size
3 average unshared data size
86 average unshared stack size
11821398 page reclaims
0 page faults
0 swaps
29 block input operations
2783 block output operations
0 messages sent
0 messages received
0 signals received
354648 voluntary context switches
322 involuntary context switches
----------
FreeBSD 13.0-BETA2 (2021-02-12)
497.88 real 76.06 user 120.03 sys
49032 maximum resident set size
22 average shared memory size
3 average unshared data size
91 average unshared stack size
12288156 page reclaims
23 page faults
0 swaps
29890 block input operations
621229 block output operations
4412 messages sent
2536379 messages received
0 signals received
1004790 voluntary context switches
251 involuntary context switches
--------------
FreeBSD 13.0-BETA4 (2021-02-26)
163.81 real 71.93 user 107.32 sys
49032 maximum resident set size
21 average shared memory size
3 average unshared data size
89 average unshared stack size
12288156 page reclaims
5 page faults
0 swaps
716 block input operations
868 block output operations
4412 messages sent
2536379 messages received
0 signals received
355244 voluntary context switches
277 involuntary context switches
----------
FreeBSD 14-CURRENT (2021-03-04)
255.43 real 74.94 user 148.90 sys
49032 maximum resident set size
23 average shared memory size
3 average unshared data size
96 average unshared stack size
12288156 page reclaims
23 page faults
0 swaps
31207 block input operations
175 block output operations
4412 messages sent
2536379 messages received
0 signals received
385527 voluntary context switches
369 involuntary context switches
----------
Differences between 13.0 and 14-CURRENT maybe related to debugging =
features.
But 13.0-BETA4 is slower than 12.2. Does someone have more information =
about this?=
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