Date: Wed, 02 Mar 2005 18:16:17 +0300 From: Deomid Ryabkov <myself@rojer.pp.ru> To: Lukas Ertl <le@FreeBSD.org> Cc: freebsd-geom@FreeBSD.org Subject: Re: gvinum mirror seems to use only one disk for reading Message-ID: <4225D8C1.1000804@rojer.pp.ru> In-Reply-To: <20050302153930.D19615@pcle2.cc.univie.ac.at> References: <4225CF92.80800@rojer.pp.ru> <20050302153930.D19615@pcle2.cc.univie.ac.at>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --]
>> writes go to both drives as they should and tps numbers are the same,
>> as expected, but "time spent processing requests" is different for
>> da0 and da1.
>
>
> I've no idea yet, why that happens. Have you checked out gstat(8) and
> how the numbers compare there?
>
about same: da0 getting about twice the load when writing.
sample snapshot of gstat with dd if=/dev/zero of=/usr/test in background:
dT: 2.009 flag_I 2000000us sizeof 240 i -1
L(q) ops/s r/s kBps ms/r w/s kBps ms/w %busy Name
0 0 0 0 0.0 0 0 0.0 0.0| fd0
0 85 0 0 0.0 85 10550 3.7 31.2| da0
0 84 0 0 0.0 84 10486 2.1 17.4| da1
0 85 0 0 0.0 85 10550 3.8 31.5| da0s1
0 84 0 0 0.0 84 10486 2.1 17.7| da1s1
(forgot to mention: the system is RELENG_5 as of 28th Feb).
btw, there's also a single weird line in my gstat output:
4294967293 185 185 522 0.5 0 0 0.0 105.2|
gvinum/plex/usr.p1
percentage often exceeds 100 and that large value for L(q) seems like
(uunit32_t) -1 to me.
other values look correct and correspond to those shown for other
components of the setup.
--
Deomid Ryabkov aka Rojer
myself@rojer.pp.ru
rojer@sysadmins.ru
ICQ: 8025844
[-- Attachment #2 --]
0 *H
01 0 + 0 *H
#00U
v0
*H
0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0
040331221809Z
050331221809Z0_10URyabkov10
U*Deomid10UDeomid Ryabkov1!0 *H
myself@rojer.pp.ru0"0
*H
0
x?ed:4y h"0 $F;O 4{ 7kU-)A
{ ;qrk,6s+ZȀ&Qvi)ZRu%0 @<r \=/)NK4풓d|$_&aNq!ڨ 66.ʺ`WPFmd;,H,ؑPd0!J5Sـd PIK3@]42g
\i3 /0-0 U 0myself@rojer.pp.ru0 U 0 0
*H
+ ~ 4YXf
DW?%\;҇B2n
Ϸ|Jճ2++fZ7[m~X㽀c6x*2%^ LnmoUkQ|Z>?X\uɝp/:00U
v0
*H
0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0
040331221809Z
050331221809Z0_10URyabkov10
U*Deomid10UDeomid Ryabkov1!0 *H
myself@rojer.pp.ru0"0
*H
0
x?ed:4y h"0 $F;O 4{ 7kU-)A
{ ;qrk,6s+ZȀ&Qvi)ZRu%0 @<r \=/)NK4풓d|$_&aNq!ڨ 66.ʺ`WPFmd;,H,ؑPd0!J5Sـd PIK3@]42g
\i3 /0-0 U 0myself@rojer.pp.ru0 U 0 0
*H
+ ~ 4YXf
DW?%\;҇B2n
Ϸ|Jճ2++fZ7[m~X㽀c6x*2%^ LnmoUkQ|Z>?X\uɝp/:0?0
0
*H
01 0 UZA10U Western Cape10U Cape Town10U
Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *H
personal-freemail@thawte.com0
030717000000Z
130716235959Z0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA00
*H
0 Ħ<UsUNʙZ hup [v :aQP
0cZ,p+Z?qV˯< 6$*+w=+>@dקe*TH<a@ dr` 00U 0 0CU <0:08642http://crl.thawte.com/ThawtePersonalFreemailCA.crl0 U 0)U "0 0 10UPrivateLabel2-1380
*H
HP .
fgCL!6 -6/ P p<ab:~ t%Pb'qW%ݩ9 Oe_N4[5MwV!x!5$ F]_eO1;070i0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA
v0 + 0 *H
1 *H
0 *H
1
050302151617Z0# *H
1:zlpU8R0R *H
1E0C0
*H
0*H
0
*H
@0+0
*H
(0x +71k0i0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA
v0z *H
1ki0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA
v0
*H
ZȰGܱ2ӟ;s:#c,lu:F|s<]cJ= PkE(r6Pzo 3I6M\r4W Qt}3ȹ?p5%a?\x{kl.4Y*ڒ?P%"rӚۄlt\$tpA9Cv:*d-MJV&eK&Gz4:j̰WQY ?$(.l8,+H]xi+]T
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4225D8C1.1000804>