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IT Briefing Agenda 9/15/05. Various Updates CM Demo SS Password Reset SMTP-Auth & Eagle Mail Update NetCom Q&A. Karen Jenkins Laura Moriarty Marcy Alexander Ken Guyton Paul Petersen. General Updates. Karen Jenkins. General Updates. Microsoft Agreement - PowerPoint PPT Presentation
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Information Technology at Emory
Information Technology DivisionTechnical Services
IT Briefing Agenda 9/15/05
• Various Updates• CM Demo• SS Password Reset• SMTP-Auth & Eagle
Mail Update• NetCom Q&A
• Karen Jenkins• Laura Moriarty• Marcy Alexander• Ken Guyton
• Paul Petersen
Information Technology at Emory
General Updates
Karen Jenkins
Information Technology at Emory
Information Technology DivisionTechnical Services
General Updates• Microsoft Agreement
– Should have details presented in Oct. or Nov. by Wade Sanner
– Working on getting price down, healthcare • IT Alert (first phase)
– New process to communicate service outages and performance problems
– Existing listserv’s will be replaced with IT-Alert@listserv.cc.emory.edu
– Please subscribe if you wish to receive these email notifications
Information Technology at Emory
Information Technology DivisionTechnical Services
General Updates (cont.)• Premier Support
– Lines are in … waiting on filling Stu’s position so it is fully staffed before rollout
• Oracle names to OID– Didn’t shut down onames on 8/1– Will definitely shut down on 9/30!– Convert users using tool on Software Express
• Eagle mail client polling– Please work with your users to change polling to
10+ minutes– Sent list to 21 local support teams using Manage IT
…..
Information Technology at Emory
Information Technology DivisionTechnical Services
…you were not alone …
Information Technology at Emory
Change Management Demo
Laura Moriarty
Information Technology at Emory
Self-Service Password Reset
Marcy Alexander
Information Technology at Emory
Information Technology DivisionTechnical Services
Self-Service Pwd Change
• Business process defined by 4/04• Technical team wrote initial code
and code by 8/04• Code revised to new specs 11/04• Template built 4/05• Production 6/05 • Ready for marketing 9/05
Information Technology at Emory
Information Technology DivisionTechnical Services
Self-Service Pwd Change
• Goal of initiative – provide customer self-service tool to manage account access without HD intervention
Information Technology at Emory
Information Technology DivisionTechnical Services
Self-Service Pwd Change
• https://passwordtest.service.emory.edu
• test url against production environment – will migrate to password.service.emory.edu
• Maintenance Weekend 9/18
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Eagle Mail Performance
An opportunity to make it fasterUpdate September 2005
The UNIX Group, Technical Services, ITD
Information Technology at Emory
Information Technology DivisionTechnical Services
Architecture
• Eagle mail consists of three services
– Relay – Delivery– Reading
Information Technology at Emory
Information Technology DivisionTechnical Services
Architecture
Relay Spam
Read/Deliv
Virus
IMAP proxy
Webmail
firewall
disk2 4
6
3
4
LDAP routingother svrs
clients
Relay
3
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Information Technology DivisionTechnical Services
The Situation
1 2 3 4 5
Read/Delivery Servers
100% CPU Utilization
Users per server
95%
50%
90% 90%
60%
6
50%
Information Technology at Emory
Information Technology DivisionTechnical Services
The Situation
1 2 3 4 5
Read/Delivery Servers
100% CPU Utilization
12851
4157
12787
8304
97
Users per server
95%
50%
90% 90%
60%
6
88
50%
Information Technology at Emory
Information Technology DivisionTechnical Services
Conclusions from Last Time
• High-frequency SELECTs are killing us
Information Technology at Emory
Information Technology DivisionTechnical Services
Hypothesis
• When clients check for new email they send a SELECT
• (They should send a NOOP)• Users are setting their clients to
check for email every minute
Information Technology at Emory
Information Technology DivisionTechnical Services
Final Notes
• Webmail checks every five minutes
(and does use SELECT)• Some clients have a drop-down
menu to select this time (1-min, 5-min, etc.)
Information Technology at Emory
Information Technology DivisionTechnical Services
Our Plea
• See if your users are polling < 5 min
• 10 min is better• You can always manually check
for new email• Help them change their polling
time if needed
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New Data
• We are logging SELECTs• More analysis
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Something Funny
• A funny thing happened on the way to the user-migration fest...
• A familiar name showed up
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And a surprise
• He only uses webmail
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Information Technology DivisionTechnical Services
New Data
• Webmail does a SELECT every five minutes
• But does an EXAMINE as soon as possible after the SELECT
• How can we see this?
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Clustering of SELECTs
t
SELECT(user, mailbox)
SELECT(user, mailbox)
Δt
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Information Technology DivisionTechnical Services
Clustering of SELECTs
Δt
29s 30s 31s . . .. . .
Information Technology at Emory
Information Technology DivisionTechnical Services
Clustering of SELECTS97 Users - Select Clustering 2005 Aug 23
0
500
1000
1500
2000
2500
3000
3500
0 60 120 180 240 300
Interval in seconds
SE
LE
CT
co
un
ts
Information Technology at Emory
Information Technology DivisionTechnical Services
Clustering of SELECTs88 users - Select Clustering (2 days from 23 Aug 2005)
0
200
400
600
800
1000
1200
1400
1600
0 60 120 180 240 300
Interval in seconds
SE
LE
CT
co
un
ts
Information Technology at Emory
Information Technology DivisionTechnical Services
Clustering of SELECTS12851 users - Select Clustering (19 Aug 2005 - 5 days)
0
5000
10000
15000
20000
25000
0 60 120 180 240 300 360
Interval in seconds
SE
LE
CT
co
un
ts
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Conclusions
• 60-second polling is a problem• The webmail upgrade put us over
the edge
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Solutions
• Checking in on the heavy users• (9-days of data, 55-s to 75-s)• Analyze the Webmail code• Architecture changes• More hardware
Information Technology at Emory
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The UNIX Group
• Chris Alexander• Bruce Anderson• Karla Fields• Amanda Gagnon• Ken Guyton• Curt Tucker• Eric Van Wieren
Information Technology at Emory
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NetCom Q&A
?Questions?Questions
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