Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Thank you, Pascal. Will take a look at it later somehow. Thank you. -- Maxim Ianoglo On Mon, 2 May 2011 21:28:43 +0200 "Pascal BERTON" <pascal.berton3 at free.fr> wrote: > Hi Maxim ! > > > > As far as I know, storage companies such as HP use iometer for storage > benchmarking. It’s free, and as far as I know, trustable… A bit complex may > be, but efficient anyhow! > > > > Best regards, > > > > Pascal. > > > > De : drbd-user-bounces at lists.linbit.com > [mailto:drbd-user-bounces at lists.linbit.com] De la part de Maxim Ianoglo > Envoyé : lundi 2 mai 2011 20:33 > À : drbd-user at lists.linbit.com > Objet : Re: [DRBD-user] Slow Read performance > > > > Hello, > > With more testing and trying to use another I/O benchmark tool I am more > sure that the > bonnie++ is not a really good tool for benchmarking, it shows a little bit > strange results. Same I can say about iozone. So I did some test with "dd" > and reading from .dev.null to file, from file to .dev.null ( to emulate the > working of a web server for example and now the results are more > believable!. Reading with ~340-350MB/s. Writing: ~120-150MB/s > > Thank you. > -- > Maxim Ianoglo > > On Mon, May 2, 2011 at 4:35 PM, Maxim Ianoglo <dotnox at gmail.com> wrote: > > No. This is output of DRBD state while performing test reading by bonnie++ ( > after test writin ) > > There is no any "oos" data. > > [root at srv04 ~]$ cat /proc/drbd > version: 8.3.10 (api:88/proto:86-96) > GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by > root at srv04.initalia.com, 2011-04-29 12:14:44 > 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r----- > ns:0 nr:50388716 dw:50388716 dr:220 al:0 bm:2 lo:0 pe:0 ua:0 ap:0 ep:1 > wo:d oos:0 > [root at srv04 ~]$ cat /proc/drbd > version: 8.3.10 (api:88/proto:86-96) > GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by > root at srv04.initalia.com, 2011-04-29 12:14:44 > 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r----- > ns:0 nr:50388716 dw:50388716 dr:220 al:0 bm:2 lo:0 pe:0 ua:0 ap:0 ep:1 > wo:d oos:0 > [root at srv04 ~]$ cat /proc/drbd > version: 8.3.10 (api:88/proto:86-96) > GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by > root at srv04.initalia.com, 2011-04-29 12:14:44 > 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r----- > ns:0 nr:50388728 dw:50388728 dr:220 al:0 bm:2 lo:0 pe:0 ua:0 ap:0 ep:1 > wo:d oos:0 > [root at srv04 ~]$ cat /proc/drbd > version: 8.3.10 (api:88/proto:86-96) > GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by > root at srv04.initalia.com, 2011-04-29 12:14:44 > 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r----- > ns:0 nr:50388728 dw:50388728 dr:220 al:0 bm:2 lo:0 pe:0 ua:0 ap:0 ep:1 > wo:d oos:0 > [root at srv04 ~]$ cat /proc/drbd > version: 8.3.10 (api:88/proto:86-96) > GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by > root at srv04.initalia.com, 2011-04-29 12:14:44 > 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r----- > ns:0 nr:50388728 dw:50388728 dr:220 al:0 bm:2 lo:0 pe:0 ua:0 ap:0 ep:1 > wo:d oos:0 > > -- > Maxim Ianoglo > > > > > > On Mon, May 2, 2011 at 2:59 PM, Bart Coninckx <bart.coninckx at telenet.be> > wrote: > > Because it is syncing? > > > > On 05/02/11 13:45, Maxim Ianoglo wrote: > > Hi, > > Anyway, why I get so big performance difference between ? > On DRBD device with Secondary DRBD host connected: ~80MB/s Read and > ~340MB/s Write > On DRBD without Secondary DRBD host connected: ~245MB/s Read and ~340Write > > Thank you. > -- > Maxim Ianoglo > > > > > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > > > > >