Q: Performance after update to Maverick a total disaster.

palihora wrote:

 

1.3GB file transfer about 9 minutes , with Mountain Lion about 3 minutes.

 

Even your Mountain Lion speeds seem extremely bad for me. That means about 7 MB/s. I am getting ten times this speed or more.

Is this through Wi-Fi?

Yes, it is through n Wi-Fi router.

Not getting great speeds but averging 10-20 mb/s but it's a constant speed at least so that I can start syncing over wifi again.

I decided to go back to Mountain Lion, and problem solved.

I did the deed.

I am happy to report that after installing the latest Mavericks version (10.9.2) and the latest Synology DSM 4.3 patch, everything works as fast as before.

I'm getting about 80-90 MB/s reads and a bit less in writing without any tweaking. What I've noticed is that the connection now is Samba by default instead of AFP.

So, no problem here, at least until now.

Which type of Synology You have ? Your speed seems very good.

palihora wrote:

 

Which type of Synology You have ? Your speed seems very good.

DS213. Two Seagate 4 TB disks in RAID 0. Everything connected using CAT 6 cable on a 1000baseT ethernet network. The (late 2012 27" 3.4 GHz i7) iMac has an SSD so the speed on this side is no problem.

Yeah, happy camper here!  :-)

However, for some reason the maximum transfer speed of my MacBook Air is way slower. Maybe its ethernet card is 100baseT. I'll make some tests when I have some spare time. But it is not critical for me. And it is a rather old model, so  there probably are some hardware limitations that I may not be aware of.

NewBartleby wrote:

 

However, for some reason the maximum transfer speed of my MacBook Air is way slower. Maybe its ethernet card is 100baseT. I'll make some tests when I have some spare time. But it is not critical for me. And it is a rather old model, so  there probably are some hardware limitations that I may not be aware of.

Mistery of the slow MacBook Air connection to NAS solved.

The Ethernet adapter is 100baseT instead of 1000baseT. The poor thing is getting its maximum theorethical limit (about 10 MB/s) for that kind of hardware.

That's why my newer iMac is way faster (actually, 10 times faster) when accessing the Synology.

So, there is nothing to blame on Mavericks whatsoever.

Ok here is an update on my issue.

AFP was alwasy giving good speeds on single file copy from NAS to Mac around 50mb/s  - problem is using itunes to sync where it stops/starts and slows down to a few kb/s constantly and sync takes hours and hours.

Upgraded to DSM 5.0 and no difference , upgraded to latest Mavericks - no difference.

Swiched to using SMB2 on NAS and connecting via SMB from Mac - speeds slower then AFP but doesnt suffer from slow downs and getting 35Mb/s over WIFI when syncing to Itunes.

Tuned smb.conf and kernel on the NAS and now getting 47Mb/s so still slighlty slower then AFP but now is usable and a full sync of iphone is possible.

Also my spinning beachball has stopped when trying to use itunes and synicing on the NAS so result alround.

Seems AFP and Itunes synicing not playing nicely together so switch to SMB is my advise till (if) they fix it.

flexiboy wrote:

 

 

Tuned smb.conf and kernel on the NAS and now getting 47Mb/s

 

How do you do that? Could you explain it for a completely ignorant person (such as me)? :-)

Thanks!

Hi NewBartleby

First of all you need to unable ssh or telnet on the NAS. You can enble it in the DSM web page.

Then ssh over to it and from there you can use an editor to modify the following files using these commands

ssh root@<ip address of your NAS>

vi /etc/sysctl.conf   and add these lines

net.core.wmem_max=12582912

net.core.rmem_max=12582912

net.ipv4.tcp_rmem= 10240 87380 12582912

net.ipv4.tcp_wmem= 10240 87380 12582912

net.ipv4.tcp_window_scaling = 1

net.ipv4.tcp_timestamps = 1

then edit the next file

vi /usr/syno/etc/smb.conf (Add these lines in the global section at the top)

socket options=TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=131072 SO_SNDBUF=131072            

use sendfile=Yes       

write raw=yes

read raw=yes  

getwd cache=Yes      

oplocks=No

Once done reboot your NAS.

Not easy steps if your not used to linux and its commands

Before you start I would recommend running some base line tests by copying a file from the NAS and get some times and speeds before you change these files.

Then run again after and see if any improvement. I found I had to tweak the settings and keep re-running to see the best results.

Thanks Flexiboy. Looks too complex for me (in particular using the vi editor which I remember from my early life as a tough to use - to say it politely), but thanks anyway.

In any case, I'm happy that you are happy with the transfer speed you are getting right now.

Regards from Barcelona!

Switch off Spotlight as follows,

System Preferences/Spotlight

select Privacy

drag your HD etc to exclude from Spotlight

Note you may not be able to search other apps that rely on Spotlight

eg Calendar.

I use the app "EasyFind" for searching the HD....no indexing slowdowns.

Just so I'm clear on this. You need to do these steps because Mavericks can't fix this and this is the best alternative outside of downgrading to ML?  Very interesting. My ML transfer speed was super fast, Mavericks is super slow

Today i install latest beta Mavericks OSX 10.9.3, and it seems, that problem is solved.

I got comparable speed results like on 10.8 Mountain Lion, so after official release of 10.9.3 i can upgrade back.