Re: sync slowness. ext3 on VIA vt82c686b

From: khromy (khromy@lnuxlab.ath.cx)
Date: Tue Jul 02 2002 - 21:57:22 EST


Below is the `vmstat 1` output while sync is running after copying the
file to /tmp/.

   procs memory swap io system cpu
 r b w swpd free buff cache si so bi bo in cs us sy id
 1 1 1 0 71128 86792 190688 0 0 5 4 110 274 3 1 95
 1 1 1 0 71064 86792 190692 0 0 0 0 225 320 0 2 98
 0 1 1 0 71064 86792 190692 0 0 0 249 222 302 0 0 100
 1 1 1 0 71064 86792 190692 0 0 0 0 221 292 0 0 100
 1 1 2 0 71060 86792 190692 0 0 0 253 223 304 0 1 99
 2 1 2 0 71060 86792 190692 0 0 0 0 223 296 0 0 100
 0 1 2 0 71060 86792 190692 0 0 0 257 222 302 0 1 99
 1 1 2 0 71060 86792 190692 0 0 0 0 221 290 0 0 100
 1 1 2 0 71060 86792 190692 0 0 0 248 226 320 0 4 96
 0 1 2 0 71060 86792 190692 0 0 0 0 233 324 1 0 99
 1 1 2 0 71060 86792 190692 0 0 0 248 224 329 0 1 99
 1 1 2 0 71060 86792 190692 0 0 0 0 220 299 0 1 99
 1 1 2 0 71060 86792 190692 0 0 0 250 223 314 0 1 99
 1 1 3 0 71060 86792 190692 0 0 0 0 221 307 0 1 99
 1 1 2 0 71060 86792 190692 0 0 0 250 222 320 0 0 100
 0 1 2 0 71060 86792 190692 0 0 0 0 221 291 0 0 100
 2 1 2 0 71060 86792 190692 0 0 0 249 230 306 0 1 99
 1 1 2 0 71060 86792 190692 0 0 0 0 220 303 0 1 99
 1 1 2 0 71060 86792 190692 0 0 0 249 224 317 0 0 100
 0 1 3 0 71060 86792 190692 0 0 0 59 221 300 0 0 100
 2 1 3 0 71060 86792 190692 0 0 0 249 230 302 0 2 98
 1 1 3 0 71060 86792 190692 0 0 0 0 221 314 0 0 100
 1 1 3 0 71060 86792 190692 0 0 0 0 223 330 0 0 100
 1 1 3 0 71060 86792 190692 0 0 0 271 222 304 0 1 99
 1 1 3 0 71060 86792 190692 0 0 0 0 222 315 0 0 100
 0 1 3 0 71060 86792 190692 0 0 0 249 220 305 0 0 100
 2 1 3 0 71060 86792 190692 0 0 0 0 223 295 0 0 100
 0 1 3 0 71060 86792 190692 0 0 0 252 229 306 0 0 100
 1 1 3 0 71060 86792 190692 0 0 0 0 241 302 0 0 100
 0 1 3 0 71060 86792 190692 0 0 0 249 288 490 0 1 99
 0 1 3 0 71060 86792 190692 0 0 0 0 316 3453 49 5 47
 2 1 3 0 71060 86792 190692 0 0 0 249 282 439 0 1 99
 1 1 3 0 71060 86792 190692 0 0 0 0 272 407 0 2 98
 1 1 3 0 71056 86792 190692 0 0 0 258 308 3808 35 13 52
 1 1 3 0 71052 86792 190692 0 0 0 0 326 1893 18 2 80
 1 1 3 0 71052 86792 190692 0 0 0 249 318 916 7 4 89
 0 1 3 0 71052 86792 190692 0 0 0 0 276 435 0 0 100
 1 1 3 0 71052 86792 190692 0 0 0 259 273 441 0 0 100
 1 1 3 0 71060 86792 190692 0 0 0 0 223 878 8 0 92
 0 1 3 0 71056 86792 190692 0 0 0 249 295 481 0 1 99
 1 1 3 0 71056 86792 190692 0 0 0 0 229 291 0 0 100
 1 1 3 0 71056 86792 190692 0 0 0 249 225 290 0 0 100
 2 1 3 0 71056 86792 190692 0 0 0 0 229 291 0 1 99
 0 1 3 0 71056 86792 190692 0 0 0 249 229 285 0 0 100
 1 1 3 0 71056 86792 190692 0 0 0 0 223 289 0 0 100
 0 1 3 0 71056 86792 190692 0 0 0 249 221 282 0 0 100
 1 1 3 0 71052 86792 190696 0 0 0 0 230 280 0 0 100
 0 1 3 0 71052 86792 190696 0 0 0 272 226 300 0 1 99
 2 1 3 0 71052 86792 190696 0 0 0 0 233 315 0 0 100
 1 1 3 0 71052 86792 190696 0 0 0 429 222 304 0 1 99
 1 1 3 0 71048 86792 190696 0 0 0 0 240 273 0 0 100
 2 1 3 0 71048 86792 190696 0 0 0 252 222 294 0 0 100
 1 1 3 0 71048 86792 190696 0 0 0 0 222 279 0 3 97
 0 1 3 0 71048 86792 190696 0 0 0 248 223 290 0 1 99
 1 1 3 0 71048 86792 190696 0 0 0 0 229 280 0 2 98
 0 1 3 0 71048 86792 190696 0 0 0 250 221 284 0 2 98
 1 1 3 0 71048 86792 190696 0 0 0 0 221 284 0 3 97
 0 1 3 0 71048 86792 190696 0 0 0 249 221 283 0 0 100
 1 1 3 0 71048 86792 190696 0 0 0 0 225 286 0 0 100
 0 1 3 0 71048 86792 190696 0 0 0 281 232 302 0 2 98
 1 1 3 0 71048 86792 190696 0 0 0 0 273 335 5 1 94
 1 1 3 0 71048 86792 190696 0 0 0 249 245 305 1 0 99
 1 1 3 0 71048 86792 190696 0 0 0 0 224 307 1 1 98
 1 1 3 0 71044 86792 190696 0 0 0 249 224 300 0 0 100
 1 1 3 0 71044 86792 190696 0 0 0 0 223 288 0 3 97
 0 1 3 0 71044 86792 190696 0 0 0 249 229 291 0 2 98
 1 1 3 0 71044 86792 190696 0 0 0 0 224 290 0 1 99
 0 1 3 0 71044 86792 190696 0 0 0 249 220 286 0 1 99
 1 1 3 0 71044 86792 190696 0 0 0 0 224 292 1 1 98
 0 1 3 0 71044 86792 190696 0 0 0 287 221 300 0 1 99
 1 1 3 0 71044 86792 190696 0 0 0 0 223 286 0 0 100
 2 1 3 0 71044 86792 190696 0 0 0 249 231 287 0 1 99
 1 1 3 0 71044 86792 190696 0 0 0 0 221 277 0 0 100
 0 1 3 0 71044 86792 190696 0 0 0 249 227 296 0 0 100
 1 1 3 0 71044 86792 190696 0 0 0 0 221 273 0 0 100
 0 1 3 0 71044 86792 190696 0 0 0 249 221 290 0 1 99
 1 1 3 0 71044 86792 190696 0 0 0 0 221 274 0 0 100
 0 1 3 0 71044 86792 190696 0 0 0 249 220 283 0 1 99
 1 1 3 0 71044 86792 190696 0 0 0 0 223 295 0 0 100
 0 1 3 0 71044 86792 190696 0 0 0 249 222 285 0 1 99
 1 1 3 0 71044 86792 190696 0 0 0 0 220 276 0 0 100
 1 1 3 0 71044 86792 190696 0 0 0 249 221 284 0 3 97
 1 1 3 0 71044 86792 190696 0 0 0 0 221 274 0 0 100
 0 1 3 0 71044 86792 190696 0 0 0 249 228 297 0 1 99
 2 1 3 0 71044 86792 190696 0 0 0 0 220 273 0 0 100
 0 1 3 0 71044 86792 190696 0 0 0 249 234 309 0 0 100
 1 1 3 0 71044 86792 190696 0 0 0 0 221 281 0 1 99
 0 1 3 0 71044 86792 190696 0 0 0 275 221 285 0 1 99
 1 1 3 0 71044 86792 190696 0 0 0 0 222 275 0 0 100
 0 1 2 0 71044 86792 190696 0 0 0 20 237 310 0 1 99
<sync finally returns around here>
 2 0 2 0 71044 86792 190696 0 0 0 4 236 455 0 0 100
 2 0 0 0 71116 86800 190696 0 0 0 99 207 497 0 0 100
 1 0 0 0 71116 86800 190696 0 0 0 0 101 279 0 0 100
 0 0 0 0 71112 86800 190700 0 0 0 0 105 301 0 0 100
 2 0 0 0 71112 86800 190700 0 0 0 110 171 282 0 0 100
 0 0 0 0 71112 86800 190700 0 0 0 0 101 282 0 0 100
 1 0 0 0 71112 86800 190700 0 0 0 0 103 289 0 0 100
 0 0 0 0 71112 86800 190700 0 0 0 0 101 277 0 0 100
 1 0 0 0 71112 86800 190700 0 0 0 0 101 273 0 0 100
 0 0 0 0 71112 86800 190700 0 0 0 16 104 289 0 0 100
 2 0 0 0 71112 86800 190700 0 0 0 0 103 290 0 0 100
 1 0 0 0 71112 86800 190700 0 0 0 0 103 289 0 0 100

-- 
L1:	khromy		;khromy(at)lnuxlab.ath.cx
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