Ramneek Sethi
2006-Oct-13 16:07 UTC
[zfs-discuss] Zfs Performance with millions of small files in Sendmail messaging environment]
Hello Experts
Would appreciate if somebody can comment on sendmail environment on
solaris 10.
How will Zfs perform if one has millions of files in sendmail message
store directory under zfs filesystem compared to UFS or VxFS..
--
Thanks & Regards,
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_/_/_/ _/ _/ _/ _/ Ramneek Sethi
_/ _/ _/ _/_/ _/ Systems Support Engineer
_/_/_/ _/ _/ _/ _/ _/ Sun Microsystems India Pvt. Ltd.
_/ _/ _/ _/ _/_/ 5th Floor,Right Wing ,
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Support SERVICES E-mail : Ramneek.Sethi at Sun.Com
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For any Support Queries pls dial the Toll Free Number 1600-4254-786
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Robert Milkowski
2006-Oct-13 22:49 UTC
[zfs-discuss] Zfs Performance with millions of small files in Sendmail messaging environment]
Hello Ramneek,
Friday, October 13, 2006, 6:07:22 PM, you wrote:
RS> Hello Experts
RS> Would appreciate if somebody can comment on sendmail environment on
RS> solaris 10.
RS> How will Zfs perform if one has millions of files in sendmail message
RS> store directory under zfs filesystem compared to UFS or VxFS..
Actually not sendmail but also MTA and
ZFS is about 5% better in real production than UFS+SVM.
--
Best regards,
Robert mailto:rmilkowski at task.gda.pl
http://milek.blogspot.com
Ramneek Sethi
2006-Oct-16 06:08 UTC
[zfs-discuss] Zfs Performance with millions of small files in Sendmail messaging environment]
Thanks for your feedback.. any comments on VxFS.. Also is there any limit of files within filesystem or within directory for optimal performance.. Thanks Robert Milkowski wrote On 10/14/06 04:19,:> Hello Ramneek, > > Friday, October 13, 2006, 6:07:22 PM, you wrote: > > RS> Hello Experts > > RS> Would appreciate if somebody can comment on sendmail environment on > RS> solaris 10. > RS> How will Zfs perform if one has millions of files in sendmail message > RS> store directory under zfs filesystem compared to UFS or VxFS.. > > Actually not sendmail but also MTA and > ZFS is about 5% better in real production than UFS+SVM. > > >-- Thanks & Regards, *********************************************************************** _/_/_/ _/ _/ _/ _/ Ramneek Sethi _/ _/ _/ _/_/ _/ Systems Support Engineer _/_/_/ _/ _/ _/ _/ _/ Sun Microsystems India Pvt. Ltd. _/ _/ _/ _/ _/_/ 5th Floor,Right Wing , _/_/_/ _/_/_/ _/ _/ The Capital Court,Munirka New Delhi - 110067,INDIA Phone : 91--11-42191029 Fax : 91-11-26160928 Support SERVICES E-mail : Ramneek.Sethi at Sun.Com *********************************************************************** For any Support Queries pls dial the Toll Free Number 1600-4254-786 ***********************************************************************
Noël Dellofano
2006-Oct-18 17:31 UTC
[zfs-discuss] Zfs Performance with millions of small files in Sendmail messaging environment]
The zap is really speedy when it comes to file lookups in a directory. If you''re really concerned about performance, and depending on your system you''re running on, I''d probably recommend staying below 10 million or so files per directory. Just since you''ll get fastest results when we can fit most of zap blocks in the ARC as opposed to having to go and fetch them from disk. *(disclaimer: this was a benchmark i ran on bits from February on an opteron box with 3 GB of memory with a single scsi disk in the pool. So you may want to rerun with current bits for better numbers if this is very important to you expect to be storing millions of files per directory on a regular basis). You can also go nuts on creating filesystems. I believe the only thing to be forewarned of is that upon reboot, you''ll be mounting all these filesystems so this might slow down the reboot process somewhat when you get to *many thousands(due to the way the automounter behaves). I believe that a fix is being worked on (may already be back? ) to make this process much quicker, however I''m not sure. Anybody know what the status of that is? Noel On Oct 15, 2006, at 11:08 PM, Ramneek Sethi wrote:> Thanks for your feedback.. any comments on VxFS.. > Also is there any limit of files within filesystem or within directory > for optimal performance.. > > Thanks > > Robert Milkowski wrote On 10/14/06 04:19,: >> Hello Ramneek, >> >> Friday, October 13, 2006, 6:07:22 PM, you wrote: >> >> RS> Hello Experts >> >> RS> Would appreciate if somebody can comment on sendmail >> environment on >> RS> solaris 10. >> RS> How will Zfs perform if one has millions of files in sendmail >> message >> RS> store directory under zfs filesystem compared to UFS or VxFS.. >> >> Actually not sendmail but also MTA and >> ZFS is about 5% better in real production than UFS+SVM. >> >> >> > > -- > Thanks & Regards, > *********************************************************************** > _/_/_/ _/ _/ _/ _/ Ramneek Sethi > _/ _/ _/ _/_/ _/ Systems Support Engineer > _/_/_/ _/ _/ _/ _/ _/ Sun Microsystems India Pvt. > Ltd. > _/ _/ _/ _/ _/_/ 5th Floor,Right Wing , > _/_/_/ _/_/_/ _/ _/ The Capital Court,Munirka > New Delhi - 110067,INDIA > Phone : 91--11-42191029 > Fax : 91-11-26160928 > Support SERVICES E-mail : Ramneek.Sethi at Sun.Com > *********************************************************************** > For any Support Queries pls dial the Toll Free Number 1600-4254-786 > *********************************************************************** > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss