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New Member

DRE and CIFS Cache

I am looking for information on how to look at the current and max size of both the DRE and the CIFS cache. I am also interested in understanding the aging process for each of these caches as well. I want to tell my customer how long he can expect to have second pass performance after a first pass. I cannot find anything to this effect in the config or Design guides

14 REPLIES
Cisco Employee

Re: DRE and CIFS Cache

Robert,

In WAAS 4.1 you can use the 'sh disk det' CLI command. The CIFS object cache is obj1 and the DRE cache is dre1.

The CIFS object cache is managed using LRU. The DRE cache is managed using FIFO.

Regards,

Zach

New Member

Re: DRE and CIFS Cache

Zach, I tried this CLI on a 4.1 device and couldn't see an Obj1 or Dre1.

Also, what is LRU.

Thanks.

New Member

Re: DRE and CIFS Cache

FYI: I just installed a WAE this weekend. I ran the command just as I was installing it, the dre1 and obj1 did not show up until later. Probably because it was not optimizing traffic at the time and had no cache.

USCH1NWA001#sh disk details

Physical disk information:

disk00: Present WD-WCANY4578068 (h02 c00 i00 l00 - Int DAS-SATA)

238472MB(232.9GB)

disk01: Present WD-WCANY4571680 (h02 c00 i01 l00 - Int DAS-SATA)

238472MB(232.9GB)

Mounted file systems:

MOUNT POINT TYPE DEVICE SIZE INUSE FREE USE%

/sw internal /dev/md0 991MB 887MB 104MB 89%

/swstore internal /dev/md1 991MB 693MB 298MB 69%

/state internal /dev/md2 5951MB 191MB 5760MB 3%

/local/local1 SYSFS /dev/md4 11903MB 211MB 11692MB 1%

.../local1/spool PRINTSPOOL /dev/data1/spool 991MB 32MB 959MB 3%

/obj1 CONTENT /dev/data1/obj 101177MB 684MB 100493MB 0%

/dre1 CONTENT /dev/data1/dre 79354MB 19518MB 59836MB 24%

/ackq1 internal /dev/data1/ackq 1189MB 32MB 1157MB 2%

/plz1 internal /dev/data1/plz 2379MB 65MB 2314MB 2%

New Member

Re: DRE and CIFS Cache

I appreciate your response and this command works great on my core wae, but this command does not seem to work on the Network modules, unless I can assume that the SYSFS is the CIFS Cache and the Content is the DRE Cache.

I don't see the obj1 and DRE cache

WAAS-NAMPA#sho disk deta

Physical disk information:

disk00: Present SB3D0CAWJDM4LD (h01 c00 i00 l00 - Int DAS-SATA)

114470MB(111.8GB)

Mounted file systems:

MOUNT POINT TYPE DEVICE SIZE INUSE FREE USE%

/sw internal /dev/sdb1 991MB 887MB 104MB 89%

/swstore internal /dev/sdb2 991MB 448MB 543MB 45%

/state internal /dev/sdb3 3967MB 128MB 3839MB 3%

/local/local1 SYSFS /dev/sdb7 5951MB 389MB 5562MB 6%

/disk00-04 CONTENT /dev/sdb6 96995MB 9503MB 87492MB 9%

.../local1/spool PRINTSPOOL /dev/sdb8 991MB 16MB 975MB 1%

No RAID devices present.

New Member

Re: DRE and CIFS Cache

It depends on what code you are running. If you are running 4.1 you will see the obj1 and dre1.

jp13woac02#show disks det

Physical disk information:

disk00: Present SB2D34E4KBVW4E (h01 c00 i00 l00 - Int DAS-SATA)

114470MB(111.8GB)

Mounted file systems:

MOUNT POINT TYPE DEVICE SIZE INUSE FREE USE%

/swstore internal /dev/sdb2 991MB 858MB 133MB 86%

/state internal /dev/sdb3 3967MB 131MB 3836MB 3%

/local/local1 SYSFS /dev/sdb6 5951MB 450MB 5501MB 7%

/sw internal /dev/sdb1 991MB 887MB 104MB 89%

.../local1/spool PRINTSPOOL /dev/data1/spool 991MB 32MB 959MB 3%

/obj1 CONTENT /dev/data1/obj 47612MB 10618MB 36994MB 22%

/dre1 CONTENT /dev/data1/dre 34717MB 26901MB 7816MB 77%

/ackq1 internal /dev/data1/ackq 1189MB 32MB 1157MB 2%

/plz1 internal /dev/data1/plz 2379MB 65MB 2314MB 2%

No RAID devices present.

Disk encryption feature is disabled.

jp13woac02#show ver

Cisco Wide Area Application Services Software (WAAS)

Copyright (c) 1999-2008 by Cisco Systems, Inc.

Cisco Wide Area Application Services Software Release 4.1.1a (build b10 Sep 10 2008)

Version: nme-wae-502-4.1.1a.10

Compiled 15:25:07 Sep 10 2008 by cnbuild

System was restarted on Fri Oct 10 15:07:54 2008.

The system has been up for 1 week, 3 days, 1 hour, 28 minutes, 30 seconds.

jp13woac02#

New Member

Re: DRE and CIFS Cache

Odd, I've tried it on my 502s, 512s, 612s. All running 4.1a and I don't see the Obj1 or Dre1 information. I've done a SH VER on all to confirm the builds.

How can different people be seeing different results?

NewYork-612-1#sh disk det

Physical disk information:

disk00: Present 3LM0BGRZ00009723X579 (h00 c00 i128 l00 - Int DAS-SAS)

286095MB(279.4GB)

disk01: Present 3LM0BH7Q00009723DKX3 (h00 c01 i128 l00 - Int DAS-SAS)

286095MB(279.4GB)

Mounted file systems:

MOUNT POINT TYPE DEVICE SIZE INUSE FREE USE%

/sw internal /dev/md0 991MB 887MB 104MB 89%

/swstore internal /dev/md1 991MB 697MB 294MB 70%

/state internal /dev/md2 5951MB 288MB 5663MB 4%

/local/local1 SYSFS /dev/md5 13886MB 1339MB 12547MB 9%

/disk00-04 CONTENT /dev/md4 250405MB 122419MB 127986MB 48%

.../local1/spool PRINTSPOOL /dev/md6 991MB 16MB 975MB 1%

Software RAID devices:

DEVICE NAME TYPE STATUS PHYSICAL DEVICES AND STATUS

/dev/md0 RAID-1 NORMAL OPERATION disk00/00[GOOD] disk01/00[GOOD]

/dev/md1 RAID-1 NORMAL OPERATION disk00/01[GOOD] disk01/01[GOOD]

/dev/md2 RAID-1 NORMAL OPERATION disk00/02[GOOD] disk01/02[GOOD]

/dev/md3 RAID-1 NORMAL OPERATION disk00/03[GOOD] disk01/03[GOOD]

/dev/md4 RAID-1 NORMAL OPERATION disk00/04[GOOD] disk01/04[GOOD]

/dev/md5 RAID-1 NORMAL OPERATION disk00/05[GOOD] disk01/05[GOOD]

/dev/md6 RAID-1 NORMAL OPERATION disk00/06[GOOD] disk01/06[GOOD]

Disk encryption feature is disabled.

NewYork-612-1#sh ver

Cisco Wide Area Application Services Software (WAAS)

Copyright (c) 1999-2008 by Cisco Systems, Inc.

Cisco Wide Area Application Services Software Release 4.1.1 (build b23 Aug 28 2008)

Version: oe612-4.1.1.23

Compiled 05:58:35 Aug 28 2008 by cnbuild

System was restarted on Mon Sep 22 18:40:36 2008.

The system has been up for 3 weeks, 6 days, 19 hours, 28 minutes, 54 seconds.

New Member

Re: DRE and CIFS Cache

hm. Maybe there is a difference between 4.1.1.23 and 4.1.1a.10. I am running 4.1.1a.10. Or possibily there is a difference between a Tranport License and the Enterprise license being enabled.

USCH1NWA001#sh ver

Cisco Wide Area Application Services Software (WAAS)

Copyright (c) 1999-2008 by Cisco Systems, Inc.

Cisco Wide Area Application Services Software Release 4.1.1a (build b10 Sep 10 2008)

Version: oe512-4.1.1a.10

USCH1NWA001#sh license

License Name Status Activation Date Activated By

-------------- ----------- --------------- --------------

Transport not active

Enterprise active 10/18/2008 admin

Video active 10/18/2008 admin

New Member

Re: DRE and CIFS Cache

I also have a 4.1.1a.10 version and an Enterprise license. Only difference I can see is yours was set by Admin, and you have Video enabled.

Atlanta-Bates-502-1#sh ver

Cisco Wide Area Application Services Software (WAAS)

Copyright (c) 1999-2008 by Cisco Systems, Inc.

Cisco Wide Area Application Services Software Release 4.1.1a (build b10 Sep 10 2

008)

Version: nme-wae-502-4.1.1a.10

Compiled 15:25:07 Sep 10 2008 by cnbuild

System was restarted on Tue Oct 7 18:42:24 2008.

The system has been up for 1 week, 5 days, 20 hours, 45 minutes, 27 seconds.

Atlanta-Bates-502-1#sh lic

License Name Status Activation Date Activated By

-------------- ----------- --------------- --------------

Transport not active

Enterprise active 08/31/2008 setAtUpgrade

Video not active

New Member

Re: DRE and CIFS Cache

That is very odd. You can also look at the DRE with the below command if the other is not working. Hopefully that one works.

sh statistics dre

Cache:

Status: Usable, Oldest Data (age): 2d2m0s

Total usable disk size: 77823 MB, Used: 31.59%

Hash table RAM size: 311 MB, Used: 39.00%

Cisco Employee

Re: DRE and CIFS Cache

Something isn't right here. Can you please send me a sysreport from one of these devices?

Thanks,

Zach

New Member

Re: DRE and CIFS Cache

Hi Zac,

I'm running 4.1.1a and I don't get those obj1 or dre1 entries either.

How do I get a sysreport? is it a sh tech you want?

Cheers, Dom

Cisco Employee

Re: DRE and CIFS Cache

You can generate a system report with the command:

copy sysreport ...

Thanks,

Zach

New Member

Re: DRE and CIFS Cache

Zach, I've emailed you the link to my sysreport.

Regards,

Richard

New Member

Re: DRE and CIFS Cache

Zach,

Did you manage to get my sysreport file?

Thanks,

Richard

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