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Thread: Client Slowness in demo

  1. #1
    flake is offline Starter Member
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    Default Client Slowness in demo

    I checked out the flash intro and logged into the live demo. It looks real great, especialy for a first release but going around in the client is extreamly slow (5-10 seconds before action hapens after clicks). My computer is a little older but the CPU didn't seem to be going up too much. It actually appeared to lock up a few times when I clicked more than once and it was still "processing". Clicking the back button in the browser re-inited the session and then it was ok again.

    A couple other nasties:

    - Is there any keyboard navigation at all?

    - Resizing/moving calender items via drag seems like start time ends up 3 hours later than were it was dragged to. Also, time overlapping events don't go side by side but literaly overlap

    - Idealy conversation view would be more a threaded view with expand and collapse [+] or [-] icon.

    Cheers
    --

  2. #2
    KevinH's Avatar
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    Quote Originally Posted by flake
    I checked out the flash intro and logged into the live demo. It looks real great, especialy for a first release but going around in the client is extreamly slow (5-10 seconds before action hapens after clicks). My computer is a little older but the CPU didn't seem to be going up too much. It actually appeared to lock up a few times when I clicked more than once and it was still "processing". Clicking the back button in the browser re-inited the session and then it was ok again.
    Can you post your client specs? CPU, OS and memory? Also which browser and version were you using?

    Quote Originally Posted by flake

    A couple other nasties:

    - Is there any keyboard navigation at all?
    It's on our list.

    Quote Originally Posted by flake
    - Resizing/moving calender items via drag seems like start time ends up 3 hours later than were it was dragged to. Also, time overlapping events don't go side by side but literaly overlap
    Calendar drag and drop is very new in the version on the demo. So it may be a bug. If you have a reproducible test case that may help us. The next release will have lots of new calendar functionality like shared calendars and the ability to import remote webcal (ICS files).

    Quote Originally Posted by flake
    - Idealy conversation view would be more a threaded view with expand and collapse [+] or [-] icon.
    We've heard similar feedback. So in the future we'll be adding a new view that may get what your asking for.

  3. #3
    Bill Lubanovic is offline Starter Member
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    Default It's slow here also

    Zimbra is also surprisingly slow for us. Our server is running Centos 4.2 with an Athlon, 1GB of RAM, and dual SATA drives with software RAID. Clients on the same LAN include Firefox 1.0.7 and Explorer 6.0 on Win2K. The mouseovers on the left side buttons take about 5 seconds to appear, and it takes as long to bring up a message after clicking on its subject line. "top" shows a java process using 267MB of VM, load average around 0.8. Any ideas? We love the look and the integration, but can't see why it's so slow.

  4. #4
    KevinH's Avatar
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    Quote Originally Posted by Bill Lubanovic
    Zimbra is also surprisingly slow for us. Our server is running Centos 4.2 with an Athlon, 1GB of RAM, and dual SATA drives with software RAID. Clients on the same LAN include Firefox 1.0.7 and Explorer 6.0 on Win2K. The mouseovers on the left side buttons take about 5 seconds to appear, and it takes as long to bring up a message after clicking on its subject line. "top" shows a java process using 267MB of VM, load average around 0.8. Any ideas? We love the look and the integration, but can't see why it's so slow.
    Thanks Bill. The server sounds fine for a test box, but what is the CPU/RAM on your clients? Are they running any other application besides the browser?

  5. #5
    flake is offline Starter Member
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    Thanks for all the responses.

    I revisited the demo today on the office machine to see if there was a difference.

    The machine I used yesterday is a dual processor P3-700 384MB SCSI with not a whole lot going on (~250MB in use from browser and thunderbird email, <1% background processor use). Browser is Mozilla suite 1.8a5. WinXP Pro w/ SP2 Internet connection is 384Kb/4Mb DSL.

    At work I use a machine that has a 1.13 Ghz P3 tulutin and 512MB, IDE disk. Machine is a little more loaded at the moment with various apps but just over 300MB in use and ~3-5% background processor use. This is on a 50% loaded T1. Same browser and OS.

    The demo is noticably faster here at work but still too slow for general usage compared to thunderbird 1.5b2 UI responsivness. Most things in the demo, like opening an email, or switching from inbox to calender took about 2-3 seconds here at work at first. After viewing the calender once a cache must have happened because then it was more responsive next time I switched, about .75-1.5 sec back and forth between inbox and calender For kicks I tried in IE6 and it was about the same.

    FWIW, when I used to use outlook 2k (no exchange server, just POP usage and local contacts) it was pretty responsive until folders started to get large. Then it was very slow (like 10-30seconds) loading mail folders that had several thousands of messages in them.

    I looked at the calender again and tried dragging "lunch" so that it would start at 12 noon the same day. After the drop on 12, application is non-responsive for about many seconds then the task darkens and "sets" on 12 noon for about a second, then flies forward to 3PM. Dragging the open source strategy around causes huge gaps of non-responsiveness then flies forward 3 hours. I looks like two events that are the same length that start at the same time have the text aligned so that it's not over lapping. I couldn't figure out why one would be to the left or right (not alphabetical, not due to time of being dropped on the start time). The attached picture shows how it looks:

    I noted that resizing the start or end time (increasing/decreasing length of an event) also resulted in that time flying forward 3 hours. Interestingly, in all cases when I double clicked to open the task the correct start and end times were there! Just not reflected in the graphical view.

    I guess I should throw a Linux box together and try playing around with it for a bit. Anyone know if the RHEL rpms work with the CentOS 4.2?
    Attached Images Attached Images
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  6. #6
    andreychek is offline Special Member & Volunteer
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    Quote Originally Posted by flake
    I guess I should throw a Linux box together and try playing around with it for a bit. Anyone know if the RHEL rpms work with the CentOS 4.2?
    Yeah, that's what I have installed on two machines here. The RHEL rpm's work great on CentOS 4.2.
    -Eric

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    KevinH's Avatar
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    Quote Originally Posted by flake
    I revisited the demo today on the office machine to see if there was a difference.
    Thanks Flake for the detailed feedback. We'll take a look. We've done a whole lot of work on the calendar since pushing the last build to the demo and the download area. So the next milestone will make some huge improvments in both features and speed in the calendar.

    The delays you see in the mail app may be a combination of the latnecy/delay in the network calls or load on the demo servers. At times they get pretty loaded since many people are checking it out.

    When you get it installed locally let us know how it goes. My guess is it will be faster in general. We also will be making some performance passes at the code after this milestone so that should help eliminate any hotspots we find.

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    comomolo is offline Starter Member
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    Very slow here too.

    I'm using a P4, 2,4GHZ, 1GB RAM and the system is running 67 processes in all taking up to 15% of the CPU at worst. I'm on an ADSL line 1024/320 and half of that bandwidth is taken by dowloads/uploads right now.

    Closing bandwidth eating apps and stopping processes down to around 40 makes things no better.

    Other web apps go fast.

    As a matter of fact, I got here after trying Roundcube's webmail app and that's why I find Zimbra's demo slow.

    Regards,

    CM

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    KevinH's Avatar
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    Quote Originally Posted by comomolo
    Very slow here too.

    I'm using a P4, 2,4GHZ, 1GB RAM and the system is running 67 processes in all taking up to 15% of the CPU at worst. I'm on an ADSL line 1024/320 and half of that bandwidth is taken by dowloads/uploads right now.

    Closing bandwidth eating apps and stopping processes down to around 40 makes things no better.

    Other web apps go fast.

    As a matter of fact, I got here after trying Roundcube's webmail app and that's why I find Zimbra's demo slow.

    Regards,

    CM
    We will be doing some performance tuning very soon. Can you list the top 3 actions you think needs a speed up?

    As for Roundcube last I looked it was just a mail front end for IMAP and didn't offer the same functionality. In any event we'll be reviewing our performance after this upcoming release. Focus now is the new features.

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