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Sat, 6 Mar 2021 06:47:43 +0000 Received: by smtp407.mail.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID f70f04ad4eb5bd87439b6f25ce2c57eb; Sat, 06 Mar 2021 06:47:38 +0000 (UTC) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.21\)) Subject: Re: Filesystem operations slower in 13.0 than 12.2 Message-Id: <12705C29-53EA-4484-8291-C409AF4B3DE5@yahoo.com> Date: Fri, 5 Mar 2021 22:47:36 -0800 To: Konstantin Belousov , freebsd-stable@freebsd.org X-Mailer: Apple Mail (2.3654.60.0.2.21) References: <12705C29-53EA-4484-8291-C409AF4B3DE5.ref@yahoo.com> X-Rspamd-Queue-Id: 4DswCN5Mm7z4vC3 X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.50 / 15.00]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; DKIM_TRACE(0.00)[yahoo.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; NEURAL_HAM_SHORT(-1.00)[-0.998]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36646, ipnet:66.163.184.0/21, country:US]; RBL_DBL_DONT_QUERY_IPS(0.00)[66.163.184.199:from]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; SPAMHAUS_ZRD(0.00)[66.163.184.199:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[66.163.184.199:from]; RWL_MAILSPIKE_POSSIBLE(0.00)[66.163.184.199:from]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-stable] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Mar 2021 06:47:45 -0000 Konstantin Belousov kostikbel at gmail.com wrote on Fri Mar 5 23:12:13 UTC 2021 : > On Sat, Mar 06, 2021 at 12:27:55AM +0200, Christos Chatzaras wrote: . . . > > Command: /usr/bin/time -l portsnap extract (these tests done with 2 = different idle servers but with same 4TB HDDs models) > >=20 > > FreeBSD 12.2p4 > >=20 > > 99.45 real 34.90 user 59.63 sys > > 100.00 real 34.91 user 59.97 sys > > 82.95 real 35.98 user 60.68 sys > >=20 > > FreeBSD 13.0-RC1 > >=20 > > 217.43 real 75.67 user 110.97 sys > > 125.50 real 63.00 user 96.47 sys > > 118.93 real 62.91 user 96.28 sys > . . . > In the portsnap results for 13RC1, the variance is too high to = conclude > anything, I think. I'll note that there are other reports of wide variance in transfer rates observed during an overall operation such as "make extract". The one I'm thinking of is: = https://lists.freebsd.org/pipermail/freebsd-stable/2021-March/093251.html which is an update to earlier reports, but based on more recent stable/13. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253968 comment 4 has some more notes about the context. The "make extract" for firefox likely is not as complicated as the portsnap extract example's execution structure. Might be something to keep an eye on if there are on-going examples of over time. =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)