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Forum Discussion
StephenB
Feb 23, 2012Guru - Experienced User
CrashPlan performance
Just got up and running with CrashPlan on my PRO 6, and was wondering what upload speeds people are seeing.
So far I am generally seeing between 5 and 12 mbps (much slower than my internet uplink). Large files seem to go slower. This speed is acceptable, though it would be nice to speed it up.
I am allowing the engine to take up to 90% of the CPU, and adjusted the WAN transmit buffer to 2560 bytes (both based on Crashplan FAQ suggestions). Compression is on, and deduplication set to "automatic". Setting it to "minimal" doesn't seem to change much.
The Pro is reporting load averages in the .90 to 1.05 range, so it appears to be CPU bound. (Overall performance of NAS is still good).
Anyway, I am wondering what other folks are seeing, and if they are getting faster backup speeds what their settings are.
So far I am generally seeing between 5 and 12 mbps (much slower than my internet uplink). Large files seem to go slower. This speed is acceptable, though it would be nice to speed it up.
I am allowing the engine to take up to 90% of the CPU, and adjusted the WAN transmit buffer to 2560 bytes (both based on Crashplan FAQ suggestions). Compression is on, and deduplication set to "automatic". Setting it to "minimal" doesn't seem to change much.
The Pro is reporting load averages in the .90 to 1.05 range, so it appears to be CPU bound. (Overall performance of NAS is still good).
Anyway, I am wondering what other folks are seeing, and if they are getting faster backup speeds what their settings are.
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- On my Pro-6 I max out my upload speed but it's only 9 mbps. You may want to check with CrashPlan and see if there are any other settings you can change.
BTW, what is your upload speed rated at?
I like to test mine at...
http://www.speedtest.net/
Post your results if you get a chance. - StephenBGuru - Experienced User
My uplink is 35 mbps, speedtest generally shows something quite close to that.fbmachines wrote: On my Pro-6 I max out my upload speed but it's only 9 mbps. You may want to check with CrashPlan and see if there are any other settings you can change.
BTW, what is your upload speed rated at?
I like to test mine at...
http://www.speedtest.net/
Post your results if you get a chance.
I just tried setting compression off and deduplication to minimal, though I am thinking that might not kick in until the next file (a few gigabytes from now...) - bishoptfAspirant
StephenB wrote:
My uplink is 35 mbps, speedtest generally shows something quite close to that.fbmachines wrote: On my Pro-6 I max out my upload speed but it's only 9 mbps. You may want to check with CrashPlan and see if there are any other settings you can change.
BTW, what is your upload speed rated at?
I like to test mine at...
http://www.speedtest.net/
Post your results if you get a chance.
I just tried setting compression off and deduplication to minimal, though I am thinking that might not kick in until the next file (a few gigabytes from now...)
I meant to post a response to this earlier, your on the right track, the key that is posted on crashplan site is to change the deduplication to minimal, you shouldn't have to adjust the compression, but from what I have read the deduplication is the culprit. Once the inital files are copied you can turn the deduplication back up to normal here is one write up - http://www.technazgul.com/2011/01/crashplan-backup-configurationspeed.html
Here is some excerpts from crashplan site:http://support.crashplan.com/doku.php/feature/data_de-duplication
Data De-duplication Options
You can control the degree to which de-duplication is applied to your backup:
Automatic Full de-duplication is used when backing up over an Internet connection. Minimal is used when backing up directly to disk or over LAN.
Full It is 100% effective, but is CPU-intensive. It is a little slower, but saves bandwidth and disk at destination.
Minimal About 90% effective, it uses several methods to identify duplicate data. It is less CPU-intensive and when used to back up locally will
speed up initial backup speed significantly, typically 400% on a single processor system. - StephenBGuru - Experienced User
What backup speeds are you actually getting?bishoptf wrote: ..I meant to post a response to this earlier, your on the right track, the key that is posted on crashplan site is to change the deduplication to minimal, you shouldn't have to adjust the compression, but from what I have read the deduplication is the culprit. Once the inital files are copied you can turn the deduplication back up to normal here is one write up - http://www.technazgul.com/2011/01/crashplan-backup-configurationspeed.html...
I haven't seen any consistent improvement when I adjust the settings, making me wonder if the Crashplan servers/bandwidth are limiting the connection speed. Though the CPU usage shows that java grabs a full core on the Pro 6 (no matter what the crashplan settings are). bishoptf wrote:
I meant to post a response to this earlier, your on the right track, the key that is posted on crashplan site is to change the deduplication to minimal, you shouldn't have to adjust the compression, but from what I have read the deduplication is the culprit. Once the inital files are copied you can turn the deduplication back up to normal here is one write up - http://www.technazgul.com/2011/01/crashplan-backup-configurationspeed.html
If I am reading it correctly, at the top of the article in italics, the note says that the dedup issue was fixed as of 3.03. So I'm not sure if it still applies. I'm sure it's still a CPU hog though.Article wrote: "Note that the problems related to dedupe/compression observed in this post were fixed by CrashPlan in the 3.03 software release in March of 2011." - SquazzAspirantDid you find out if it was the hardware that was the bottleneck? :)
- StephenBGuru - Experienced UserIt does seem to run somewhat faster with more memory. I'm not sure how you could easily tell if it is processor-bound or limited by the crashplan cloud.
- SquazzAspirantOk, I will try upgrading the memory. It is transferring rather slow, taking into account that it's over LAN
- StephenBGuru - Experienced UserYou are backing just using it for local backup? (pc on lan to NAS for instance)???
Or are you backing up from the NAS to the Crashplan Central? - SquazzAspirant
StephenB wrote: You are backing just using it for local backup? (pc on lan to NAS for instance)???
Or are you backing up from the NAS to the Crashplan Central?
PC lan to NAS. I was planning on allso using the cloud, but I was looking for something that could give me a fast recover on LAN if any of my computer-hardware went down. This as well as having relatives using my NAS so they quickly could recover their data (In stead of having to download hundreds of gigabytes from the cloud). But with the speed I'm having atm., I think I will end up using something like BT Sync or just normal manual FastCopy.
Anywho, back to topic, then yes, I'm using PC lan to NAS, and I have set up the preferences so that it should be as fast at possible. Still, the max speed I have seen is 60Mbps, where I had hoped on seeing something like maybe 4-500Mbps.
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