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OS 6.4.1 slow ... to the point of unusable
We just upgraded an RN102 to 6.4.1, which intially seemed to fix some backup issues we'd been working around, however we've just downgraded to 6.4.0 after seeing 6.4.1 being too slow to be usable (the downgrade fixed this issue). By slow I mean in navigating file trees and serving files. Has anyone seen this?
To get the fix for the anti-virus issue you can update to ReadyNASOS 6.5.0-T338 (Beta 2) (or later). Alternatively if you prefer you can stay on 6.4.2 for now and install the hot-fix (which is now available).
Thanks for your patience.
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I have htop installed on my NAS so I took a screenshot of the output which absolutely verifies without a doubt that the culprit is the ctscan daemon (the antivirus server). Their instances are pegging my NAS's CPU cores at 100%.
kylefarris wrote:
I have htop installed on my NAS so I took a screenshot of the output which absolutely verifies without a doubt that the culprit is the ctscan daemon (the antivirus server). Their instances are pegging my NAS's CPU cores at 100%.
Nothing surprising here, that is a known bug, and we have been telling lots of people to turn off AV protection on 6.4.1 and 6.4.2 beta for now. Hopefully Netgear will have a fix soon.
Yeah, I did.
I had the smae problem.
Now I disabled the antivirus and the problem seems to be over.
But..
How risky is to wordk without antivirus?
My computers have Norton antivirus
Eeuwe wrote:
Now I disabled the antivirus and the problem seems to be over.
But..
How risky is to wordk without antivirus?
My computers have Norton antivirus
If you run both scanners, then of course there is a chance that the NAS AV will find something that Norton misses. In my opinion that chance is pretty small.
If you are downloading files directly to the NAS with an App (for instance, executable torrent files), then AV on the NAS will run right away, while Norton would likely run later.
I also have Norton on our PCs, and I've always left AntiVirus disabled on the NAS.
I disabled 6.4.1's Antivirus and that worked for me; will keep an eye on this forum to know when the fix from NetGear is ready. Thank you to Stephen for all the clear, helpful info you have posted on this subject as well as the positive attitude!
- What about accessibility direct from the internet when you are hacked or access your files from somewhere else?
AdriFrijters wrote:
What about accessibility direct from the internet when you are hacked or access your files from somewhere else?If you are uploading files from a public PC w/o protection, then the scan wouldn't happen until you accessed the the files from one of your protected windows systems. Since the NAS is running linux, there isn't much risk of damage spreading to other files unless it is being accessed by an OSX or Windows PC).
If a hacker attempts to penetrate the NAS, the AV scanner honestly won't help.
We are aware of the issues with Antivirus slowing down the NAS. We've been looking into what we can do to resolve this.
- I heard / read 6.4.2 is available. Is This correct and is it safe?
AdriFrijters wrote:
I heard / read 6.4.2 is available. Is This correct and is it safe?It is released, and I've installed on my RN102 and my RN202. No problems so far.
BTW, I did a factory reset on the RN102, and that restored its original performance (in fact write speeds are quite a bit faster than I measured back in the 6.2.x days). I'm seeing 70-75 MB/s on the RN102 (both read and write), and ~100 MB/sec on the RN202.
Both are jbod, not RAID-1.
- A factory reset destroy data? I am not able to look it up in the manual, sorry for responding so pure.
Yes. A factory default wipes all data.
- Thnx. For a NAS in use no option (i think). Thanks.
AdriFrijters wrote:
Thnx. For a NAS in use no option (i think). Thanks.There is some down time.
Restoring the data with rsync took 1 TB per day. I think if you used NFS or CIFS it would have been > 4 TB per day.
- 6.4.2 update NOT RECOMMENDED for RN104 - AV issue still exists on mine even after reboot.
I too have this problem after updating to 6.4.2. I did disable the virus scanner and the speed has returned.
I just spend 3 fruitless hours trying to use the readynas to aid migration to a new laptop. Finally I found this thread. Ugh. Yes, turning off virus check on the NAS and rebooting solved the problem.
What is the latest on this ? its been about 3 months now without a solution.
Peter
Hello Peter_the_Hat,
Can you try creating a test user and see if you get the same problem. Use the web portal first and not the desktop client or app. Web portal should work first.
Regards,
Looking to do some isolation testing with a few users of 100 series or RN2120 systems who have slower performance with anti-virus disabled than they had in 6.2.4. Please PM me if interested.
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