Exchange Email painfully slow since 2.2 update

Still: If you set up Exchange email accounts, setting the Email retrieval update interval to anything else than 'Never' results in a continious 10% CPU load, draining the battery two times faster than in Eclair 2.1

Set it to 'Never', or have Tasker kill the Email app x seconds after Display Off

Determined by using System Panel app.

I installed the JPA firmware last night, which is to believed to be the final release version for 11-november. The problem stil exists.... But, I came across http://code.google.com/p/android/issues/detail?id=9307&q=aosp%20email&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars and lo and behold, excessive CPU usage goes down to fairly normal 1-3% CPU while asleep by setting Email retrieval for Exchange accounts to "Push". 

I made a lot of testruns of about one hour to determine the effect of setting up Email Exchange clients on CPU usage and therefore battery life:

Starting point:
- Build Froyo.XWJPA
- Smallband I9000XXJPP
- Voodoo lagfix
- One Gmail account set up, syncing contacts, Gmail, Picassa, Agenda
- Tests run against two separate Exchange Server 2003 servers SP2
- CPU load determined with SystemPanel app

1. Installed Exchange account #1 without security policies. Email retrieval set to "Push".
- Email process used 0% CPU, system CPU floating around 3%

2. Set Exchange account #1 to retrieve email every hour
- Email process used 1,1% CPU, system CPU floating around 10%

3. Set Exchange account #1 back to "Push"
- Email process used 0% CPU, system CPU floating around 3%

4. Set Exchange account #1 to retrieve every 5 minutes
- Email process used 1,5% CPU, system CPU floating around 10%

4. Added Exchange Account #2 with security policy, Email retrieval set to "Push"
- - Email process used 0,5% CPU, system CPU floating around 10%

5. Set Exchange account #2 to retrieve email every hour
- Email process used 1,5% CPU, system CPU floating around 10%

So, what seem conclusions from this test:

1. One Exchange account set to `Push` doesn´t affect battery life much. 'Push' is generally considered the most battery effective.

2. One Exchange account set to some time interval does affect CPU considerably, therefore batterylife also. It's irrelevant what interval is set. The reason the total system CPU goes to around 10% seems to be that the process name ´system´ starts using several % CPU as soon as the email process does. Based on the experience that the email client is slow with an exchange account without a lagfix leads me to the conclusion the email app is performing large amounts of I/O in this setting. This link (comment 14) seems to confirm this. Experiences here (comment 15 & 16) are similar.

3. Adding another Exchange account with security policy enforced increases CPU, no matter at what interval this second account is set. This *could be related to the bug found on Motorola Droid that when the Maximum inactivity time out in the Activesync properties on the Exchange server are set to a higher value than the highest supported value on the phone, the email app keeps the phone in a wake lock.

So, i just have my exchange accounts set to Never. For one account, automatic retrieval is useless anyways because mail gets delivered to subfolders (which do not sync or get pushed automatically). Fot the other, i'll just have to open the email app every now and then and let it fetch mail at that moment.

This problem doesn't seem to be limited to the Galaxy S, Motorola Droid is mentioned also in above threads.

links: http://code.google.com/p/android/issues/detail?id=9307&q=aosp%20email&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars
http://code.google.com/p/android/issues/detail?id=5424

I have not seen this issue mentioned yet... Upgraded to 2.2, when I access mail for exchange to get my corporate emails it crawls and freeezes. It will work but takes approx 1 min between seleciotn and action. has anyone come across this issue yet? In addition since the upgrade with email it drains the battery.

I did a factory reset earlier today hoping for a quick fix - this did not work 
All thoughts welcome

Yes I have the same speed issue with Android 2.2 with my corporate email. It is slow but works. I also put the frequency update to never. If not, it will drain the battery.

But the worst case is if a synchronization happens at same time, then the email application is blocked until the sync is over. It can take a long time (2 to 3 mn) if new Google Reader App is doing sync 

Not sure if it is an Android 2.2 issue or not.

Regis

I also have the same problem. E-mail too slow after upgrading to 2.2 (which also was only successful after 574,938 trials). I don'y have patience for voodoo stuff and no idea what lagfix is. These things should be auto-fixed by auto-updates.

I should have gone for iPhone or Nokia N8. I was warned that this phone is for tech savvy people and not for people who want things to work seamlessly.

Hi Forum!

Got my wife an SGS a month ago. I upgraded to official Froyo 2.2 as the first thing, and then started setting up the phone.

Buildt-in email with 2 accounts (one POP3, one IMAP) worked perfectly and fast - no complaints! But as old mails were building up on the IMAP folder (+80 a day) I considered it too annoying to delete them one by one, so after two weeks of untroubled use of the email client, I did a "Clear cache" on the mail program. After setting up the accounts again (exactly as before) email was all of a sudden painfully slow. Any selection (mails or menus) in the mailprogram now had a lag of 10 seconds at best - often 30+ seconds.

Clearing the cache and setting up just one of the accounts did not help at all (POP3 or IMAP). After trying for a couple of days (and my wife getting quite frustrated), I changed to K-9 which does work (even though I would prefer to use the built-in mail client if possible).

But my conclusion is that the mail program problem might not simply be a result of upgrading to Froyo, but rather a result of the unit trying to address deleted caches (this also happens when you upgrade).

Interestingly, I have cleared the cache of ONE other app ("Floating Images") and after this, that APP is also showing significant lags in performance 

Any comments?