Re: [Veritas-bu] 2Gb/s FC read speed
In the end, the SUN box in question needed patch 119130-16.zip and for some reason, smpatch didn't know it needed it. System is now running at full speed. Thanks to all that helped out(Ed, Roy and Paul) Karl-Frédéric Rossing, Technical Services phone: 204-786-6431 fax: 204-784-6755 toll free: 1-800-665-1934 www.federated.ca CONFIDENTIALITY NOTICE The information in this email may be confidential and/or legally privileged. This email is intended to be reviewed by only the individual(s) or organization(s) named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email and its attachments from your system. Thank you.
RE: [Veritas-bu] 2Gb/s FC read speed
Title: Message are the 2 mount points on two different LUNs or just two points on the sme LUN? if different LUNs are they the same RAID group? same type of disk for both? (SATA vs FC?) how are you connected to disk? dual port HBA one 2gb port per diskmount? or are you using something like EMC Powerpath or HDS HDLM and only using one port, with the other as failover, or both load balanced, or one port per LUN? Do you have any other LUNs mounted via on of the ports? You saythe tape drivesare connected to a single card, but are they daisy chained to one port on the card or is it a dual port/controller SCSIcard? In other words, more infor please -- -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]Sent: May 4, 2006 5:07 PMTo: veritas-bu@mailman.eng.auburn.eduSubject: [Veritas-bu] 2Gb/s FC read speedHi, I'm getting slow DSSU - LTO2 tape drive performance. I think the problem is related to the SAN since the DSSU uses two mount points(/dssu1 and /dssu2). I'm seeing 16MB/s on one LTO2 drive and 27MB/s on the other LTO2 tape drive using iostat. Both drives are LVD connected to the same card but using a different port. Under ideal circumstances, how fast should i be able to read data off a dual port 2Gb/s hba assuming it's directly connected to the storage? Karl-Frédéric Rossing, Technical Services phone: 204-786-6431 fax: 204-784-6755 toll free: 1-800-665-1934 www.federated.ca CONFIDENTIALITY NOTICE The information in this email may be confidential and/or legally privileged. This email is intended to be reviewed by only the individual(s) or organization(s) named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email and its attachments from your system. Thank you. La version française suit le texte anglais. This email may contain privileged and/or confidential information, and the Bank of Canada does not waive any related rights. Any distribution, use, or copying of this email or the information it contains by other than the intended recipient is unauthorized. If you received this email in error please delete it immediately from your system and notify the sender promptly by email that you have done so. Le présent courriel peut contenir de l'information privilégiée ou confidentielle. La Banque du Canada ne renonce pas aux droits qui s'y rapportent. Toute diffusion, utilisation ou copie de ce courriel ou des renseignements qu'il contient par une personne autre que le ou les destinataires désignés est interdite. Si vous recevez ce courriel par erreur, veuillez le supprimer immédiatement et envoyer sans délai à l'expéditeur un message électronique pour l'aviser que vous avez éliminé de votre ordinateur toute copie du courriel reçu.
Re: [Veritas-bu] 2Gb/s FC read speed
[EMAIL PROTECTED] wrote on 05/05/2006 08:52:26 AM: Tools like iometer on Windows and Bonnie on Unix can help you benchmark your disk subsystem. You can also do backups to the null device. See http://seer.support.veritas.com/docs/242918.htm. This allows you to have bpkar32 process data locally, and elmiinate network connectivity and tape performance from the picture. Thats awesome, I'll do that later this afternoon on the dssu's. So far i was doing cp /dssu1 /tmp and iostat'ing that BUT as /tmp fills up so does swap. Karl-Frédéric Rossing, Technical Services phone: 204-786-6431 fax: 204-784-6755 toll free: 1-800-665-1934 www.federated.ca CONFIDENTIALITY NOTICE The information in this email may be confidential and/or legally privileged. This email is intended to be reviewed by only the individual(s) or organization(s) named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email and its attachments from your system. Thank you.
RE: [Veritas-bu] 2Gb/s FC read speed
Here are some testsyou canrun : TEST CLIENT DISK READ SPEED1) Read the data and write to /dev/null: a) with tar timex tar cvf /dev/null /dssu1b) with bpbkar timex /usr/openv/netbackup/bin/bpbkar -dt 0 -r 888 -nocont /dssu1 /dev/null2) Read the data and write to /dev/rmt/0cbn: a) with tar mt -f /dev/rmt/0cbn rew timex tar cvfb /dev/rmt/0cbn 512 /dssu1 b) with bpbkar mt -f /dev/rmt/0cbn rew timex /usr/openv/netbackup/bin/bpbkar -dt 0 -r 888 -nocont /dssu1 /dev/rmt/0cbn From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]Sent: Friday, May 05, 2006 9:17 AMTo: Ed WiltsCc: veritas-bu@mailman.eng.auburn.eduSubject: Re: [Veritas-bu] 2Gb/s FC read speed [EMAIL PROTECTED] wrote on 05/05/2006 08:52:26 AM: Tools like iometer on Windows and Bonnie on Unix can help you benchmark your disk subsystem. You can also do backups to the null device. See http://seer.support.veritas.com/docs/242918.htm. This allows you to have bpkar32 process data locally, and elmiinate network connectivity and tape performance from the picture. Thats awesome, I'll do that later this afternoon on the dssu's. So far i was doing cp /dssu1 /tmp and iostat'ing that BUT as /tmp fills up so does swap. Karl-Frédéric Rossing, Technical Services phone: 204-786-6431 fax: 204-784-6755 toll free: 1-800-665-1934 www.federated.ca CONFIDENTIALITY NOTICE The information in this email may be confidential and/or legally privileged. This email is intended to be reviewed by only the individual(s) or organization(s) named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email and its attachments from your system. Thank you.
RE: [Veritas-bu] 2Gb/s FC read speed
[EMAIL PROTECTED] wrote on 05/05/2006 09:39:23 AM: Here are some tests you can run : TEST CLIENT DISK READ SPEED 1) Read the data and write to /dev/null: a) with tar timex tar cvf /dev/null /dssu1 With this, i was able to determine that the problem is related to the HBA/FileSystem and not the tape drives. Netbackup server gets no more than 50MB/s while another server with more ram get 100MB/s(as checked with iostat) I'll work on the filesystem first and then unconfigure and reconfigure the FC ports if needed. Thanks Roy! Karl-Frédéric Rossing, Technical Services phone: 204-786-6431 fax: 204-784-6755 toll free: 1-800-665-1934 www.federated.ca CONFIDENTIALITY NOTICE The information in this email may be confidential and/or legally privileged. This email is intended to be reviewed by only the individual(s) or organization(s) named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email and its attachments from your system. Thank you. v
